/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:25:00,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:25:00,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:25:00,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:25:00,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:25:00,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:25:00,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:25:00,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:25:00,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:25:00,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:25:00,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:25:00,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:25:00,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:25:00,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:25:00,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:25:00,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:25:00,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:25:00,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:25:00,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:25:00,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:25:00,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:25:00,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:25:00,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:25:00,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:25:00,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:25:00,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:25:00,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:25:00,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:25:00,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:25:00,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:25:00,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:25:00,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:25:00,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:25:00,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:25:00,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:25:00,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:25:00,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:25:00,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:25:00,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:25:00,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:25:00,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:25:00,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 16:25:00,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:25:00,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:25:00,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:25:00,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:25:00,213 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:25:00,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:25:00,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:25:00,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:25:00,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:25:00,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:25:00,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:25:00,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:25:00,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:25:00,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:25:00,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:25:00,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:25:00,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:25:00,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:25:00,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:25:00,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:25:00,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:25:00,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:25:00,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:25:00,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:25:00,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:25:00,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:25:00,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:25:00,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:25:00,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:25:00,217 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:25:00,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:25:00,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:25:00,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:25:00,559 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:25:00,559 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:25:00,560 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2020-08-21 16:25:00,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30910f73c/d19d0a3ff6e0477782ddcf5eac9e870c/FLAG58e65a8cc [2020-08-21 16:25:01,138 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:25:01,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2020-08-21 16:25:01,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30910f73c/d19d0a3ff6e0477782ddcf5eac9e870c/FLAG58e65a8cc [2020-08-21 16:25:01,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30910f73c/d19d0a3ff6e0477782ddcf5eac9e870c [2020-08-21 16:25:01,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:25:01,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:25:01,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:25:01,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:25:01,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:25:01,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:25:01" (1/1) ... [2020-08-21 16:25:01,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70179558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:25:01, skipping insertion in model container [2020-08-21 16:25:01,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:25:01" (1/1) ... [2020-08-21 16:25:01,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:25:01,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:25:01,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:25:01,940 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:25:02,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:25:02,090 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:25:02,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:25:02 WrapperNode [2020-08-21 16:25:02,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:25:02,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:25:02,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:25:02,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:25:02,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:25:02" (1/1) ... [2020-08-21 16:25:02,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:25:02" (1/1) ... [2020-08-21 16:25:02,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:25:02" (1/1) ... [2020-08-21 16:25:02,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:25:02" (1/1) ... [2020-08-21 16:25:02,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:25:02" (1/1) ... [2020-08-21 16:25:02,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:25:02" (1/1) ... [2020-08-21 16:25:02,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:25:02" (1/1) ... [2020-08-21 16:25:02,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:25:02,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:25:02,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:25:02,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:25:02,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:25:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:25:02,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:25:02,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:25:02,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 16:25:02,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 16:25:02,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 16:25:02,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 16:25:02,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 16:25:02,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 16:25:02,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 16:25:02,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 16:25:02,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 16:25:02,260 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 16:25:02,260 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 16:25:02,260 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 16:25:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 16:25:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 16:25:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 16:25:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 16:25:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 16:25:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 16:25:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 16:25:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 16:25:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 16:25:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:25:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 16:25:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 16:25:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 16:25:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 16:25:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 16:25:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 16:25:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:25:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 16:25:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 16:25:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 16:25:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 16:25:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 16:25:02,265 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 16:25:02,265 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 16:25:02,265 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 16:25:02,265 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 16:25:02,265 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 16:25:02,265 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 16:25:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:25:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:25:02,265 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 16:25:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 16:25:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:25:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:25:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 16:25:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:25:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:25:02,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:25:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:25:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 16:25:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:25:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 16:25:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 16:25:02,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:25:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 16:25:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 16:25:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:25:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 16:25:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 16:25:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 16:25:02,268 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 16:25:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 16:25:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 16:25:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 16:25:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 16:25:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 16:25:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 16:25:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 16:25:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 16:25:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 16:25:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 16:25:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 16:25:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 16:25:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 16:25:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 16:25:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 16:25:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 16:25:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 16:25:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 16:25:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:25:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 16:25:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 16:25:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 16:25:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 16:25:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 16:25:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 16:25:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 16:25:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:25:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 16:25:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 16:25:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 16:25:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:25:02,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:25:02,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:25:03,367 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:25:03,368 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 16:25:03,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:25:03 BoogieIcfgContainer [2020-08-21 16:25:03,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:25:03,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:25:03,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:25:03,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:25:03,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:25:01" (1/3) ... [2020-08-21 16:25:03,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3997f9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:25:03, skipping insertion in model container [2020-08-21 16:25:03,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:25:02" (2/3) ... [2020-08-21 16:25:03,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3997f9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:25:03, skipping insertion in model container [2020-08-21 16:25:03,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:25:03" (3/3) ... [2020-08-21 16:25:03,387 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product58.cil.c [2020-08-21 16:25:03,398 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:25:03,408 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:25:03,422 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:25:03,443 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:25:03,443 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:25:03,443 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:25:03,443 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:25:03,444 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:25:03,444 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:25:03,444 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:25:03,444 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:25:03,468 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-21 16:25:03,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 16:25:03,478 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:03,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:25:03,479 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:03,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:03,485 INFO L82 PathProgramCache]: Analyzing trace with hash -298144076, now seen corresponding path program 1 times [2020-08-21 16:25:03,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:03,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839217714] [2020-08-21 16:25:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:04,083 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:04,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:04,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:04,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:04,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:04,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:04,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:25:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:04,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:25:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:25:04,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839217714] [2020-08-21 16:25:04,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:25:04,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:25:04,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990517476] [2020-08-21 16:25:04,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:25:04,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:04,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:25:04,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:25:04,248 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-08-21 16:25:05,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:05,503 INFO L93 Difference]: Finished difference Result 338 states and 432 transitions. [2020-08-21 16:25:05,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:25:05,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 16:25:05,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:05,520 INFO L225 Difference]: With dead ends: 338 [2020-08-21 16:25:05,520 INFO L226 Difference]: Without dead ends: 182 [2020-08-21 16:25:05,525 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 [2020-08-21 16:25:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-21 16:25:05,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-08-21 16:25:05,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-21 16:25:05,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 170 transitions. [2020-08-21 16:25:05,659 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 170 transitions. Word has length 46 [2020-08-21 16:25:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:05,660 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 170 transitions. [2020-08-21 16:25:05,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:25:05,660 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 170 transitions. [2020-08-21 16:25:05,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 16:25:05,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:05,667 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] [2020-08-21 16:25:05,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:25:05,668 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:05,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:05,669 INFO L82 PathProgramCache]: Analyzing trace with hash -491113124, now seen corresponding path program 1 times [2020-08-21 16:25:05,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:05,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040309007] [2020-08-21 16:25:05,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,009 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:06,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:25:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:25:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:25:06,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040309007] [2020-08-21 16:25:06,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:25:06,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:25:06,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586695524] [2020-08-21 16:25:06,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:25:06,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:06,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:25:06,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:25:06,077 INFO L87 Difference]: Start difference. First operand 147 states and 170 transitions. Second operand 4 states. [2020-08-21 16:25:06,525 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:07,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:07,521 INFO L93 Difference]: Finished difference Result 267 states and 319 transitions. [2020-08-21 16:25:07,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:25:07,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 16:25:07,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:07,525 INFO L225 Difference]: With dead ends: 267 [2020-08-21 16:25:07,525 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 16:25:07,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:25:07,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 16:25:07,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-21 16:25:07,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-21 16:25:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-08-21 16:25:07,566 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 47 [2020-08-21 16:25:07,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:07,567 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-08-21 16:25:07,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:25:07,567 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-08-21 16:25:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 16:25:07,569 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:07,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:25:07,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:25:07,570 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:07,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:07,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1388977157, now seen corresponding path program 1 times [2020-08-21 16:25:07,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:07,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513716713] [2020-08-21 16:25:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:07,896 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:07,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:07,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:07,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:07,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:07,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:07,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:25:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:07,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:25:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:25:07,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513716713] [2020-08-21 16:25:07,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:25:07,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 16:25:07,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391395451] [2020-08-21 16:25:07,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:25:07,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:07,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:25:07,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:25:07,969 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 8 states. [2020-08-21 16:25:08,340 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:08,665 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:08,890 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:09,129 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:10,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:10,512 INFO L93 Difference]: Finished difference Result 280 states and 337 transitions. [2020-08-21 16:25:10,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 16:25:10,518 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 16:25:10,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:10,521 INFO L225 Difference]: With dead ends: 280 [2020-08-21 16:25:10,521 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 16:25:10,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:25:10,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 16:25:10,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-21 16:25:10,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-21 16:25:10,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 157 transitions. [2020-08-21 16:25:10,561 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 157 transitions. Word has length 52 [2020-08-21 16:25:10,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:10,561 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 157 transitions. [2020-08-21 16:25:10,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:25:10,561 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 157 transitions. [2020-08-21 16:25:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 16:25:10,563 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:10,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:25:10,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:25:10,564 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:10,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:10,564 INFO L82 PathProgramCache]: Analyzing trace with hash 105794737, now seen corresponding path program 1 times [2020-08-21 16:25:10,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:10,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948036975] [2020-08-21 16:25:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:10,871 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:10,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:10,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:10,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:10,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:10,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:10,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:25:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:10,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:10,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:10,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 16:25:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:10,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 16:25:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:25:10,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948036975] [2020-08-21 16:25:10,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:25:10,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:25:10,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490764368] [2020-08-21 16:25:10,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:25:10,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:10,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:25:10,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:25:10,964 INFO L87 Difference]: Start difference. First operand 138 states and 157 transitions. Second operand 6 states. [2020-08-21 16:25:11,286 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:12,593 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:13,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:13,301 INFO L93 Difference]: Finished difference Result 377 states and 459 transitions. [2020-08-21 16:25:13,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:25:13,302 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-21 16:25:13,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:13,306 INFO L225 Difference]: With dead ends: 377 [2020-08-21 16:25:13,306 INFO L226 Difference]: Without dead ends: 263 [2020-08-21 16:25:13,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:25:13,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-08-21 16:25:13,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 220. [2020-08-21 16:25:13,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-21 16:25:13,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 248 transitions. [2020-08-21 16:25:13,357 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 248 transitions. Word has length 65 [2020-08-21 16:25:13,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:13,358 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 248 transitions. [2020-08-21 16:25:13,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:25:13,358 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 248 transitions. [2020-08-21 16:25:13,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 16:25:13,359 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:13,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:25:13,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:25:13,360 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:13,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:13,361 INFO L82 PathProgramCache]: Analyzing trace with hash -830596407, now seen corresponding path program 1 times [2020-08-21 16:25:13,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:13,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737461375] [2020-08-21 16:25:13,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,618 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:13,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:25:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 16:25:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 16:25:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:13,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:25:13,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737461375] [2020-08-21 16:25:13,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:25:13,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:25:13,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412105335] [2020-08-21 16:25:13,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:25:13,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:13,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:25:13,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:25:13,800 INFO L87 Difference]: Start difference. First operand 220 states and 248 transitions. Second operand 10 states. [2020-08-21 16:25:14,215 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:14,479 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:14,718 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:15,327 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:15,586 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:15,846 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:16,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:16,880 INFO L93 Difference]: Finished difference Result 460 states and 553 transitions. [2020-08-21 16:25:16,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:25:16,881 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-08-21 16:25:16,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:16,885 INFO L225 Difference]: With dead ends: 460 [2020-08-21 16:25:16,885 INFO L226 Difference]: Without dead ends: 264 [2020-08-21 16:25:16,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:25:16,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-08-21 16:25:16,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 224. [2020-08-21 16:25:16,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-08-21 16:25:16,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 252 transitions. [2020-08-21 16:25:16,974 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 252 transitions. Word has length 79 [2020-08-21 16:25:16,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:16,976 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 252 transitions. [2020-08-21 16:25:16,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:25:16,976 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 252 transitions. [2020-08-21 16:25:16,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 16:25:16,978 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:16,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:25:16,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:25:16,978 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:16,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:16,979 INFO L82 PathProgramCache]: Analyzing trace with hash 2078167495, now seen corresponding path program 1 times [2020-08-21 16:25:16,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:16,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984737019] [2020-08-21 16:25:16,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,331 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:17,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:25:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 16:25:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 16:25:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:17,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:25:17,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984737019] [2020-08-21 16:25:17,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:25:17,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:25:17,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105058280] [2020-08-21 16:25:17,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:25:17,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:17,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:25:17,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:25:17,456 INFO L87 Difference]: Start difference. First operand 224 states and 252 transitions. Second operand 12 states. [2020-08-21 16:25:17,952 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:18,260 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:18,502 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:18,746 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:19,263 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:20,179 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:20,495 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:25:20,738 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:25:21,020 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:21,332 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:25:21,589 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:25:22,978 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:23,356 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:24,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:24,012 INFO L93 Difference]: Finished difference Result 789 states and 997 transitions. [2020-08-21 16:25:24,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 16:25:24,013 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-21 16:25:24,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:24,019 INFO L225 Difference]: With dead ends: 789 [2020-08-21 16:25:24,019 INFO L226 Difference]: Without dead ends: 589 [2020-08-21 16:25:24,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 16:25:24,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-08-21 16:25:24,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 527. [2020-08-21 16:25:24,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-08-21 16:25:24,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 609 transitions. [2020-08-21 16:25:24,118 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 609 transitions. Word has length 79 [2020-08-21 16:25:24,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:24,119 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 609 transitions. [2020-08-21 16:25:24,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:25:24,119 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 609 transitions. [2020-08-21 16:25:24,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 16:25:24,123 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:24,123 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:25:24,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:25:24,124 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:24,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:24,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1201141545, now seen corresponding path program 1 times [2020-08-21 16:25:24,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:24,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844915699] [2020-08-21 16:25:24,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,390 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:24,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:25:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:25:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 16:25:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 16:25:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 16:25:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 16:25:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-21 16:25:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:24,716 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-08-21 16:25:24,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844915699] [2020-08-21 16:25:24,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:25:24,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 16:25:24,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242577683] [2020-08-21 16:25:24,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 16:25:24,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:24,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 16:25:24,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:25:24,724 INFO L87 Difference]: Start difference. First operand 527 states and 609 transitions. Second operand 13 states. [2020-08-21 16:25:25,125 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:25,915 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:26,456 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:25:26,707 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 16:25:27,001 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:27,246 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:27,481 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:25:27,739 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 16:25:28,017 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:28,265 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:29,911 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:30,161 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:25:30,410 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:30,631 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:31,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:31,144 INFO L93 Difference]: Finished difference Result 937 states and 1177 transitions. [2020-08-21 16:25:31,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 16:25:31,144 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-08-21 16:25:31,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:31,148 INFO L225 Difference]: With dead ends: 937 [2020-08-21 16:25:31,148 INFO L226 Difference]: Without dead ends: 434 [2020-08-21 16:25:31,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 16:25:31,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-08-21 16:25:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 380. [2020-08-21 16:25:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-08-21 16:25:31,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 443 transitions. [2020-08-21 16:25:31,226 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 443 transitions. Word has length 154 [2020-08-21 16:25:31,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:31,227 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 443 transitions. [2020-08-21 16:25:31,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 16:25:31,227 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 443 transitions. [2020-08-21 16:25:31,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-21 16:25:31,229 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:31,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:25:31,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:25:31,230 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:31,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:31,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1319690960, now seen corresponding path program 1 times [2020-08-21 16:25:31,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:31,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049986372] [2020-08-21 16:25:31,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,491 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:31,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:25:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:25:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 16:25:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 16:25:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 16:25:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:25:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 16:25:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 16:25:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 16:25:31,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049986372] [2020-08-21 16:25:31,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:25:31,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 16:25:31,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465632879] [2020-08-21 16:25:31,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:25:31,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:31,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:25:31,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:25:31,713 INFO L87 Difference]: Start difference. First operand 380 states and 443 transitions. Second operand 10 states. [2020-08-21 16:25:33,096 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:33,334 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:33,564 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:33,784 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:34,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:34,209 INFO L93 Difference]: Finished difference Result 704 states and 848 transitions. [2020-08-21 16:25:34,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:25:34,210 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-08-21 16:25:34,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:34,216 INFO L225 Difference]: With dead ends: 704 [2020-08-21 16:25:34,217 INFO L226 Difference]: Without dead ends: 411 [2020-08-21 16:25:34,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:25:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-08-21 16:25:34,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 385. [2020-08-21 16:25:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-21 16:25:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 448 transitions. [2020-08-21 16:25:34,324 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 448 transitions. Word has length 149 [2020-08-21 16:25:34,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:34,326 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 448 transitions. [2020-08-21 16:25:34,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:25:34,327 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 448 transitions. [2020-08-21 16:25:34,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-21 16:25:34,332 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:34,332 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:25:34,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:25:34,333 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:34,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:34,333 INFO L82 PathProgramCache]: Analyzing trace with hash 810217870, now seen corresponding path program 1 times [2020-08-21 16:25:34,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:34,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115402322] [2020-08-21 16:25:34,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,666 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:34,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:25:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:25:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 16:25:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 16:25:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 16:25:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:25:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 16:25:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 16:25:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 16:25:34,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115402322] [2020-08-21 16:25:34,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:25:34,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 16:25:34,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20862196] [2020-08-21 16:25:34,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:25:34,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:34,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:25:34,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:25:34,836 INFO L87 Difference]: Start difference. First operand 385 states and 448 transitions. Second operand 10 states. [2020-08-21 16:25:35,199 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:36,772 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:37,040 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:37,285 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:37,527 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:37,822 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:38,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:38,173 INFO L93 Difference]: Finished difference Result 418 states and 500 transitions. [2020-08-21 16:25:38,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 16:25:38,174 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-08-21 16:25:38,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:38,177 INFO L225 Difference]: With dead ends: 418 [2020-08-21 16:25:38,177 INFO L226 Difference]: Without dead ends: 415 [2020-08-21 16:25:38,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 16:25:38,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-08-21 16:25:38,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 385. [2020-08-21 16:25:38,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-21 16:25:38,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 447 transitions. [2020-08-21 16:25:38,267 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 447 transitions. Word has length 149 [2020-08-21 16:25:38,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:38,267 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 447 transitions. [2020-08-21 16:25:38,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:25:38,268 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 447 transitions. [2020-08-21 16:25:38,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-21 16:25:38,271 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:38,272 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:25:38,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:25:38,272 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:38,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:38,273 INFO L82 PathProgramCache]: Analyzing trace with hash -488644751, now seen corresponding path program 1 times [2020-08-21 16:25:38,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:38,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826491000] [2020-08-21 16:25:38,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,678 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:38,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:25:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:25:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 16:25:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 16:25:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 16:25:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:25:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 16:25:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 16:25:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 16:25:38,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826491000] [2020-08-21 16:25:38,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:25:38,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 16:25:38,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257552183] [2020-08-21 16:25:38,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:25:38,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:38,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:25:38,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:25:38,911 INFO L87 Difference]: Start difference. First operand 385 states and 447 transitions. Second operand 12 states. [2020-08-21 16:25:39,251 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:39,835 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:40,639 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:40,926 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:41,174 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:41,437 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:41,733 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:41,988 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:43,207 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:43,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:43,970 INFO L93 Difference]: Finished difference Result 922 states and 1160 transitions. [2020-08-21 16:25:43,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 16:25:43,970 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 153 [2020-08-21 16:25:43,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:43,976 INFO L225 Difference]: With dead ends: 922 [2020-08-21 16:25:43,976 INFO L226 Difference]: Without dead ends: 624 [2020-08-21 16:25:43,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-21 16:25:43,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-08-21 16:25:44,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 528. [2020-08-21 16:25:44,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-08-21 16:25:44,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 621 transitions. [2020-08-21 16:25:44,081 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 621 transitions. Word has length 153 [2020-08-21 16:25:44,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:44,081 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 621 transitions. [2020-08-21 16:25:44,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:25:44,082 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 621 transitions. [2020-08-21 16:25:44,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-21 16:25:44,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:44,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:25:44,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:25:44,086 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:44,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:44,087 INFO L82 PathProgramCache]: Analyzing trace with hash 700598337, now seen corresponding path program 2 times [2020-08-21 16:25:44,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:44,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428440157] [2020-08-21 16:25:44,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,364 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:44,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:25:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:25:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 16:25:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 16:25:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:25:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:25:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 16:25:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-21 16:25:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:25:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-21 16:25:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-21 16:25:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-21 16:25:44,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428440157] [2020-08-21 16:25:44,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:25:44,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 16:25:44,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613766217] [2020-08-21 16:25:44,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 16:25:44,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:44,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 16:25:44,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:25:44,726 INFO L87 Difference]: Start difference. First operand 528 states and 621 transitions. Second operand 13 states. [2020-08-21 16:25:46,126 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:46,390 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:25:48,026 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 16:25:48,277 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:48,515 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:48,961 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-21 16:25:50,593 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-21 16:25:50,847 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 16:25:51,130 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:25:51,379 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:25:52,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:52,413 INFO L93 Difference]: Finished difference Result 1442 states and 1789 transitions. [2020-08-21 16:25:52,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 16:25:52,414 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 207 [2020-08-21 16:25:52,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:52,421 INFO L225 Difference]: With dead ends: 1442 [2020-08-21 16:25:52,422 INFO L226 Difference]: Without dead ends: 999 [2020-08-21 16:25:52,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 16:25:52,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-08-21 16:25:52,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 850. [2020-08-21 16:25:52,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-08-21 16:25:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 986 transitions. [2020-08-21 16:25:52,656 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 986 transitions. Word has length 207 [2020-08-21 16:25:52,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:52,657 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 986 transitions. [2020-08-21 16:25:52,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 16:25:52,657 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 986 transitions. [2020-08-21 16:25:52,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-21 16:25:52,661 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:25:52,662 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 16:25:52,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 16:25:52,662 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:25:52,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:25:52,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1257976449, now seen corresponding path program 1 times [2020-08-21 16:25:52,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:25:52,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855592837] [2020-08-21 16:25:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:25:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:52,941 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:25:52,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:25:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:52,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:52,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:25:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:52,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:52,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:25:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:52,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:25:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:25:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:25:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:25:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 16:25:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 16:25:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:25:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:25:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:25:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 16:25:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-21 16:25:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:25:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:25:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:25:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-21 16:25:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-21 16:25:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:25:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-08-21 16:25:53,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855592837] [2020-08-21 16:25:53,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:25:53,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 16:25:53,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285411340] [2020-08-21 16:25:53,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 16:25:53,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:25:53,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 16:25:53,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:25:53,252 INFO L87 Difference]: Start difference. First operand 850 states and 986 transitions. Second operand 13 states. [2020-08-21 16:25:53,769 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:53,996 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:54,212 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:55,545 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:25:55,787 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:25:56,032 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:56,256 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:25:56,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:25:56,566 INFO L93 Difference]: Finished difference Result 1133 states and 1322 transitions. [2020-08-21 16:25:56,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 16:25:56,566 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 207 [2020-08-21 16:25:56,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:25:56,567 INFO L225 Difference]: With dead ends: 1133 [2020-08-21 16:25:56,567 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 16:25:56,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-21 16:25:56,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 16:25:56,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 16:25:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 16:25:56,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 16:25:56,572 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2020-08-21 16:25:56,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:25:56,572 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 16:25:56,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 16:25:56,572 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 16:25:56,572 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 16:25:56,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 16:25:56,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 16:25:56,731 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-08-21 16:25:58,286 WARN L193 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 246