/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_spec1_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:37:07,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:37:07,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:37:07,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:37:07,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:37:07,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:37:07,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:37:07,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:37:07,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:37:07,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:37:07,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:37:07,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:37:07,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:37:07,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:37:07,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:37:07,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:37:07,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:37:07,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:37:07,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:37:07,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:37:07,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:37:07,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:37:07,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:37:07,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:37:07,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:37:07,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:37:07,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:37:07,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:37:07,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:37:07,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:37:07,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:37:07,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:37:07,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:37:07,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:37:07,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:37:07,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:37:07,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:37:07,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:37:07,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:37:07,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:37:07,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:37:07,133 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 [2020-08-22 03:37:07,157 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:37:07,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:37:07,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:37:07,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:37:07,159 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:37:07,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:37:07,159 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:37:07,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:37:07,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:37:07,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:37:07,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:37:07,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:37:07,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:37:07,161 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:37:07,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:37:07,161 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:37:07,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:37:07,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:37:07,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:37:07,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:37:07,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:37:07,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:37:07,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:37:07,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:37:07,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:37:07,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:37:07,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:37:07,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:37:07,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:37:07,164 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:37:07,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:37:07,435 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:37:07,440 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:37:07,442 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:37:07,443 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:37:07,444 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product47.cil.c [2020-08-22 03:37:07,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8703c8a9/0c38a11a8e854b37ba9a7672e5a0e981/FLAG1a0b22f41 [2020-08-22 03:37:08,079 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:37:08,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product47.cil.c [2020-08-22 03:37:08,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8703c8a9/0c38a11a8e854b37ba9a7672e5a0e981/FLAG1a0b22f41 [2020-08-22 03:37:08,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8703c8a9/0c38a11a8e854b37ba9a7672e5a0e981 [2020-08-22 03:37:08,349 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:37:08,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:37:08,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:37:08,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:37:08,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:37:08,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:37:08" (1/1) ... [2020-08-22 03:37:08,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0619bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:37:08, skipping insertion in model container [2020-08-22 03:37:08,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:37:08" (1/1) ... [2020-08-22 03:37:08,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:37:08,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:37:08,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:37:08,900 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:37:09,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:37:09,055 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:37:09,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:37:09 WrapperNode [2020-08-22 03:37:09,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:37:09,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:37:09,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:37:09,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:37:09,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:37:09" (1/1) ... [2020-08-22 03:37:09,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:37:09" (1/1) ... [2020-08-22 03:37:09,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:37:09" (1/1) ... [2020-08-22 03:37:09,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:37:09" (1/1) ... [2020-08-22 03:37:09,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:37:09" (1/1) ... [2020-08-22 03:37:09,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:37:09" (1/1) ... [2020-08-22 03:37:09,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:37:09" (1/1) ... [2020-08-22 03:37:09,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:37:09,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:37:09,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:37:09,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:37:09,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:37:09" (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 [2020-08-22 03:37:09,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:37:09,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:37:09,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 03:37:09,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 03:37:09,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 03:37:09,231 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 03:37:09,231 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 03:37:09,231 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 03:37:09,232 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 03:37:09,232 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 03:37:09,233 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 03:37:09,233 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 03:37:09,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 03:37:09,233 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 03:37:09,233 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 03:37:09,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 03:37:09,234 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 03:37:09,234 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 03:37:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 03:37:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 03:37:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 03:37:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 03:37:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 03:37:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 03:37:09,236 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 03:37:09,237 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 03:37:09,237 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 03:37:09,237 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 03:37:09,238 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 03:37:09,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 03:37:09,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 03:37:09,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 03:37:09,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 03:37:09,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 03:37:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 03:37:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 03:37:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 03:37:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 03:37:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 03:37:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:37:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:37:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:37:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 03:37:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 03:37:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 03:37:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 03:37:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 03:37:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 03:37:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 03:37:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 03:37:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 03:37:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 03:37:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 03:37:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 03:37:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 03:37:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 03:37:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 03:37:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:37:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 03:37:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 03:37:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 03:37:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 03:37:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 03:37:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 03:37:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 03:37:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 03:37:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 03:37:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 03:37:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 03:37:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 03:37:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 03:37:09,247 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 03:37:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:37:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 03:37:09,249 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 03:37:09,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:37:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 03:37:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:37:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 03:37:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 03:37:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:37:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 03:37:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 03:37:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:37:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 03:37:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 03:37:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 03:37:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 03:37:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 03:37:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 03:37:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:37:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:37:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 03:37:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:37:10,418 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:37:10,419 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 03:37:10,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:37:10 BoogieIcfgContainer [2020-08-22 03:37:10,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:37:10,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:37:10,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:37:10,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:37:10,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:37:08" (1/3) ... [2020-08-22 03:37:10,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a61491a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:37:10, skipping insertion in model container [2020-08-22 03:37:10,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:37:09" (2/3) ... [2020-08-22 03:37:10,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a61491a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:37:10, skipping insertion in model container [2020-08-22 03:37:10,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:37:10" (3/3) ... [2020-08-22 03:37:10,433 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product47.cil.c [2020-08-22 03:37:10,443 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:37:10,451 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:37:10,465 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:37:10,490 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:37:10,490 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:37:10,490 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:37:10,490 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:37:10,491 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:37:10,491 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:37:10,491 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:37:10,491 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:37:10,515 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-08-22 03:37:10,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 03:37:10,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:10,526 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] [2020-08-22 03:37:10,526 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:10,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:10,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1070296044, now seen corresponding path program 1 times [2020-08-22 03:37:10,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:10,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877863189] [2020-08-22 03:37:10,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:11,254 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:11,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:11,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:11,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:11,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:11,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:11,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:37:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:11,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:37:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:37:11,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877863189] [2020-08-22 03:37:11,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:37:11,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:37:11,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085783047] [2020-08-22 03:37:11,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:37:11,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:11,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:37:11,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:37:11,434 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 3 states. [2020-08-22 03:37:12,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:12,642 INFO L93 Difference]: Finished difference Result 317 states and 417 transitions. [2020-08-22 03:37:12,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:37:12,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 03:37:12,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:12,660 INFO L225 Difference]: With dead ends: 317 [2020-08-22 03:37:12,660 INFO L226 Difference]: Without dead ends: 172 [2020-08-22 03:37:12,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:37:12,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-22 03:37:12,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 136. [2020-08-22 03:37:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-22 03:37:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2020-08-22 03:37:12,762 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 46 [2020-08-22 03:37:12,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:12,762 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2020-08-22 03:37:12,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:37:12,763 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2020-08-22 03:37:12,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 03:37:12,767 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:12,767 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] [2020-08-22 03:37:12,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:37:12,768 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:12,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:12,768 INFO L82 PathProgramCache]: Analyzing trace with hash 689119196, now seen corresponding path program 1 times [2020-08-22 03:37:12,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:12,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388582426] [2020-08-22 03:37:12,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,146 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:13,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:37:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:37:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:13,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:37:13,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388582426] [2020-08-22 03:37:13,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:37:13,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:37:13,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701903450] [2020-08-22 03:37:13,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:37:13,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:13,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:37:13,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:37:13,232 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand 4 states. [2020-08-22 03:37:13,608 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:14,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:14,555 INFO L93 Difference]: Finished difference Result 244 states and 300 transitions. [2020-08-22 03:37:14,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:37:14,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 03:37:14,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:14,560 INFO L225 Difference]: With dead ends: 244 [2020-08-22 03:37:14,560 INFO L226 Difference]: Without dead ends: 156 [2020-08-22 03:37:14,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:37:14,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-22 03:37:14,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 127. [2020-08-22 03:37:14,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-22 03:37:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 150 transitions. [2020-08-22 03:37:14,603 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 150 transitions. Word has length 47 [2020-08-22 03:37:14,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:14,603 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 150 transitions. [2020-08-22 03:37:14,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:37:14,604 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 150 transitions. [2020-08-22 03:37:14,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 03:37:14,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:14,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:37:14,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:37:14,607 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:14,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:14,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1659347680, now seen corresponding path program 1 times [2020-08-22 03:37:14,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:14,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620480408] [2020-08-22 03:37:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:14,949 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:14,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:14,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:15,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:15,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:15,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:15,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:37:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:15,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:37:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:37:15,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620480408] [2020-08-22 03:37:15,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:37:15,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:37:15,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757563503] [2020-08-22 03:37:15,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:37:15,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:15,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:37:15,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:37:15,074 INFO L87 Difference]: Start difference. First operand 127 states and 150 transitions. Second operand 8 states. [2020-08-22 03:37:15,409 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:15,714 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:15,977 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:16,207 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:16,911 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:18,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:18,826 INFO L93 Difference]: Finished difference Result 437 states and 546 transitions. [2020-08-22 03:37:18,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 03:37:18,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 03:37:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:18,839 INFO L225 Difference]: With dead ends: 437 [2020-08-22 03:37:18,839 INFO L226 Difference]: Without dead ends: 334 [2020-08-22 03:37:18,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:37:18,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-08-22 03:37:18,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 272. [2020-08-22 03:37:18,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-22 03:37:18,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 332 transitions. [2020-08-22 03:37:18,926 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 332 transitions. Word has length 51 [2020-08-22 03:37:18,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:18,926 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 332 transitions. [2020-08-22 03:37:18,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:37:18,926 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 332 transitions. [2020-08-22 03:37:18,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 03:37:18,929 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:18,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:37:18,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:37:18,930 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:18,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:18,930 INFO L82 PathProgramCache]: Analyzing trace with hash -2103406603, now seen corresponding path program 1 times [2020-08-22 03:37:18,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:18,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315231692] [2020-08-22 03:37:18,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:19,208 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:19,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:19,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:19,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:19,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:19,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:19,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:37:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:19,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:37:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:19,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 03:37:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:19,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:37:19,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315231692] [2020-08-22 03:37:19,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:37:19,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:37:19,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372861596] [2020-08-22 03:37:19,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:37:19,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:19,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:37:19,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:37:19,326 INFO L87 Difference]: Start difference. First operand 272 states and 332 transitions. Second operand 8 states. [2020-08-22 03:37:19,675 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:20,528 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:20,934 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:21,246 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:21,561 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:21,990 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:23,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:23,032 INFO L93 Difference]: Finished difference Result 882 states and 1149 transitions. [2020-08-22 03:37:23,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 03:37:23,033 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 03:37:23,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:23,040 INFO L225 Difference]: With dead ends: 882 [2020-08-22 03:37:23,040 INFO L226 Difference]: Without dead ends: 634 [2020-08-22 03:37:23,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 03:37:23,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-08-22 03:37:23,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 499. [2020-08-22 03:37:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-08-22 03:37:23,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 614 transitions. [2020-08-22 03:37:23,168 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 614 transitions. Word has length 57 [2020-08-22 03:37:23,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:23,169 INFO L479 AbstractCegarLoop]: Abstraction has 499 states and 614 transitions. [2020-08-22 03:37:23,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:37:23,169 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 614 transitions. [2020-08-22 03:37:23,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 03:37:23,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:23,172 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] [2020-08-22 03:37:23,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:37:23,173 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:23,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:23,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1216252231, now seen corresponding path program 1 times [2020-08-22 03:37:23,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:23,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540599252] [2020-08-22 03:37:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:23,420 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:23,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:23,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:23,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:23,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:23,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:23,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:37:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:23,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:37:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:23,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 03:37:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:23,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 03:37:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:23,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:37:23,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540599252] [2020-08-22 03:37:23,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:37:23,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 03:37:23,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711565158] [2020-08-22 03:37:23,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:37:23,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:23,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:37:23,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:37:23,551 INFO L87 Difference]: Start difference. First operand 499 states and 614 transitions. Second operand 9 states. [2020-08-22 03:37:23,902 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:24,800 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:25,069 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:25,347 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:26,025 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:26,296 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:27,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:27,307 INFO L93 Difference]: Finished difference Result 1415 states and 1900 transitions. [2020-08-22 03:37:27,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 03:37:27,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-22 03:37:27,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:27,317 INFO L225 Difference]: With dead ends: 1415 [2020-08-22 03:37:27,317 INFO L226 Difference]: Without dead ends: 940 [2020-08-22 03:37:27,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 03:37:27,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2020-08-22 03:37:27,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 759. [2020-08-22 03:37:27,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2020-08-22 03:37:27,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 935 transitions. [2020-08-22 03:37:27,477 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 935 transitions. Word has length 61 [2020-08-22 03:37:27,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:27,478 INFO L479 AbstractCegarLoop]: Abstraction has 759 states and 935 transitions. [2020-08-22 03:37:27,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:37:27,478 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 935 transitions. [2020-08-22 03:37:27,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-22 03:37:27,481 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:27,482 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] [2020-08-22 03:37:27,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:37:27,482 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:27,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:27,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1403376364, now seen corresponding path program 1 times [2020-08-22 03:37:27,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:27,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72164153] [2020-08-22 03:37:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,731 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:27,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:37:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:37:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:37:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 03:37:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 03:37:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:27,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:37:27,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72164153] [2020-08-22 03:37:27,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:37:27,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 03:37:27,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408744747] [2020-08-22 03:37:27,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:37:27,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:27,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:37:27,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:37:27,866 INFO L87 Difference]: Start difference. First operand 759 states and 935 transitions. Second operand 9 states. [2020-08-22 03:37:28,207 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:29,107 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:29,330 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:37:29,588 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:29,825 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:31,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:31,615 INFO L93 Difference]: Finished difference Result 2506 states and 3515 transitions. [2020-08-22 03:37:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 03:37:31,616 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-22 03:37:31,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:31,632 INFO L225 Difference]: With dead ends: 2506 [2020-08-22 03:37:31,632 INFO L226 Difference]: Without dead ends: 1771 [2020-08-22 03:37:31,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:37:31,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2020-08-22 03:37:31,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1371. [2020-08-22 03:37:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1371 states. [2020-08-22 03:37:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1674 transitions. [2020-08-22 03:37:31,947 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1674 transitions. Word has length 98 [2020-08-22 03:37:31,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:31,948 INFO L479 AbstractCegarLoop]: Abstraction has 1371 states and 1674 transitions. [2020-08-22 03:37:31,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:37:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1674 transitions. [2020-08-22 03:37:31,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-22 03:37:31,954 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:31,955 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] [2020-08-22 03:37:31,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:37:31,955 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:31,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:31,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1411135723, now seen corresponding path program 1 times [2020-08-22 03:37:31,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:31,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802027189] [2020-08-22 03:37:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,179 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:32,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:37:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:37:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:37:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 03:37:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 03:37:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:32,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:37:32,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802027189] [2020-08-22 03:37:32,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:37:32,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 03:37:32,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434284430] [2020-08-22 03:37:32,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:37:32,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:32,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:37:32,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:37:32,321 INFO L87 Difference]: Start difference. First operand 1371 states and 1674 transitions. Second operand 9 states. [2020-08-22 03:37:33,290 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:33,512 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:37:33,770 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:34,031 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:35,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:35,278 INFO L93 Difference]: Finished difference Result 3134 states and 4213 transitions. [2020-08-22 03:37:35,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 03:37:35,279 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-22 03:37:35,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:35,298 INFO L225 Difference]: With dead ends: 3134 [2020-08-22 03:37:35,298 INFO L226 Difference]: Without dead ends: 1787 [2020-08-22 03:37:35,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 03:37:35,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2020-08-22 03:37:35,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1411. [2020-08-22 03:37:35,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1411 states. [2020-08-22 03:37:35,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1714 transitions. [2020-08-22 03:37:35,661 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1714 transitions. Word has length 98 [2020-08-22 03:37:35,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:35,662 INFO L479 AbstractCegarLoop]: Abstraction has 1411 states and 1714 transitions. [2020-08-22 03:37:35,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:37:35,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1714 transitions. [2020-08-22 03:37:35,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-22 03:37:35,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:35,667 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] [2020-08-22 03:37:35,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 03:37:35,668 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:35,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:35,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1990345235, now seen corresponding path program 1 times [2020-08-22 03:37:35,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:35,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721955934] [2020-08-22 03:37:35,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,013 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:36,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:37:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:37:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:37:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 03:37:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 03:37:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:37:36,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721955934] [2020-08-22 03:37:36,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:37:36,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 03:37:36,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904274042] [2020-08-22 03:37:36,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 03:37:36,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:36,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 03:37:36,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 03:37:36,171 INFO L87 Difference]: Start difference. First operand 1411 states and 1714 transitions. Second operand 11 states. [2020-08-22 03:37:36,720 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:36,953 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:37,167 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:37,821 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:38,094 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:38,348 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:39,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:39,624 INFO L93 Difference]: Finished difference Result 2760 states and 3605 transitions. [2020-08-22 03:37:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 03:37:39,625 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-22 03:37:39,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:39,634 INFO L225 Difference]: With dead ends: 2760 [2020-08-22 03:37:39,635 INFO L226 Difference]: Without dead ends: 1373 [2020-08-22 03:37:39,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:37:39,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2020-08-22 03:37:39,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1129. [2020-08-22 03:37:39,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-08-22 03:37:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1346 transitions. [2020-08-22 03:37:39,874 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1346 transitions. Word has length 98 [2020-08-22 03:37:39,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:39,875 INFO L479 AbstractCegarLoop]: Abstraction has 1129 states and 1346 transitions. [2020-08-22 03:37:39,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 03:37:39,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1346 transitions. [2020-08-22 03:37:39,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-22 03:37:39,879 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:39,879 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:37:39,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 03:37:39,879 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:39,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:39,880 INFO L82 PathProgramCache]: Analyzing trace with hash 860662504, now seen corresponding path program 1 times [2020-08-22 03:37:39,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:39,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719536927] [2020-08-22 03:37:39,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,186 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:40,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:37:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 03:37:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:37:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:37:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 03:37:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 03:37:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 03:37:40,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719536927] [2020-08-22 03:37:40,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:37:40,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 03:37:40,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855876253] [2020-08-22 03:37:40,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 03:37:40,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:40,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 03:37:40,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-22 03:37:40,580 INFO L87 Difference]: Start difference. First operand 1129 states and 1346 transitions. Second operand 17 states. [2020-08-22 03:37:41,185 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:41,624 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:37:41,868 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:37:42,085 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:37:42,754 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:43,352 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:37:43,813 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:37:45,185 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:37:45,474 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:37:45,800 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:37:46,096 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:37:46,656 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-08-22 03:37:47,206 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-08-22 03:37:48,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:48,613 INFO L93 Difference]: Finished difference Result 2470 states and 3101 transitions. [2020-08-22 03:37:48,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 03:37:48,614 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2020-08-22 03:37:48,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:48,623 INFO L225 Difference]: With dead ends: 2470 [2020-08-22 03:37:48,623 INFO L226 Difference]: Without dead ends: 1365 [2020-08-22 03:37:48,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 03:37:48,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2020-08-22 03:37:48,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1103. [2020-08-22 03:37:48,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-22 03:37:48,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1291 transitions. [2020-08-22 03:37:48,850 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1291 transitions. Word has length 102 [2020-08-22 03:37:48,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:48,853 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1291 transitions. [2020-08-22 03:37:48,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 03:37:48,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1291 transitions. [2020-08-22 03:37:48,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 03:37:48,858 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:48,859 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:37:48,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 03:37:48,860 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:48,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:48,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1219959590, now seen corresponding path program 1 times [2020-08-22 03:37:48,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:48,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977866895] [2020-08-22 03:37:48,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,143 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:49,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:37:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:37:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:37:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 03:37:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 03:37:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-22 03:37:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 03:37:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:37:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 03:37:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 03:37:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:49,524 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-22 03:37:49,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977866895] [2020-08-22 03:37:49,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:37:49,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 03:37:49,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623355161] [2020-08-22 03:37:49,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:37:49,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:49,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:37:49,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:37:49,527 INFO L87 Difference]: Start difference. First operand 1103 states and 1291 transitions. Second operand 9 states. [2020-08-22 03:37:50,813 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:52,914 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:53,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:53,968 INFO L93 Difference]: Finished difference Result 3017 states and 3973 transitions. [2020-08-22 03:37:53,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 03:37:53,969 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 153 [2020-08-22 03:37:53,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:53,982 INFO L225 Difference]: With dead ends: 3017 [2020-08-22 03:37:53,983 INFO L226 Difference]: Without dead ends: 2254 [2020-08-22 03:37:53,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-08-22 03:37:53,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2020-08-22 03:37:54,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 1821. [2020-08-22 03:37:54,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1821 states. [2020-08-22 03:37:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2151 transitions. [2020-08-22 03:37:54,328 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2151 transitions. Word has length 153 [2020-08-22 03:37:54,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:54,329 INFO L479 AbstractCegarLoop]: Abstraction has 1821 states and 2151 transitions. [2020-08-22 03:37:54,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:37:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2151 transitions. [2020-08-22 03:37:54,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 03:37:54,335 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:54,335 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:37:54,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 03:37:54,336 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:54,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:54,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1025619864, now seen corresponding path program 1 times [2020-08-22 03:37:54,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:54,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987220390] [2020-08-22 03:37:54,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,664 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:54,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:37:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:37:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:37:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 03:37:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 03:37:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-22 03:37:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 03:37:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:37:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 03:37:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 03:37:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-22 03:37:54,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987220390] [2020-08-22 03:37:54,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:37:54,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 03:37:54,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129628102] [2020-08-22 03:37:54,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 03:37:54,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:54,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 03:37:54,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:37:54,985 INFO L87 Difference]: Start difference. First operand 1821 states and 2151 transitions. Second operand 18 states. [2020-08-22 03:37:55,598 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:55,930 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:37:56,173 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:37:56,411 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:37:57,037 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:57,589 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:57,968 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:59,242 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:59,518 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:37:59,820 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:38:00,095 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:38:01,003 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:38:01,235 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:38:01,509 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:38:01,753 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:38:02,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:38:02,584 INFO L93 Difference]: Finished difference Result 3558 states and 4508 transitions. [2020-08-22 03:38:02,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-22 03:38:02,587 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 153 [2020-08-22 03:38:02,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:38:02,589 INFO L225 Difference]: With dead ends: 3558 [2020-08-22 03:38:02,590 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 03:38:02,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=387, Invalid=1775, Unknown=0, NotChecked=0, Total=2162 [2020-08-22 03:38:02,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 03:38:02,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 03:38:02,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 03:38:02,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 03:38:02,601 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 153 [2020-08-22 03:38:02,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:38:02,601 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 03:38:02,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 03:38:02,601 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 03:38:02,602 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 03:38:02,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 03:38:02,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.