/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 false -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 0.1.25-89f541c [2020-08-27 21:42:31,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:42:31,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:42:31,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:42:31,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:42:31,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:42:31,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:42:31,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:42:31,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:42:31,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:42:31,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:42:31,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:42:31,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:42:31,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:42:31,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:42:31,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:42:31,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:42:31,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:42:31,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:42:31,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:42:31,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:42:31,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:42:31,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:42:31,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:42:31,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:42:31,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:42:31,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:42:31,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:42:31,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:42:31,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:42:31,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:42:31,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:42:31,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:42:31,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:42:31,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:42:31,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:42:31,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:42:31,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:42:31,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:42:31,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:42:31,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:42:31,251 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 [2020-08-27 21:42:31,290 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:42:31,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:42:31,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:42:31,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:42:31,292 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:42:31,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:42:31,293 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:42:31,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:42:31,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:42:31,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:42:31,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:42:31,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:42:31,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:42:31,294 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:42:31,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:42:31,294 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:42:31,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:42:31,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:42:31,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:42:31,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:42:31,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:42:31,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:42:31,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:42:31,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:42:31,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:42:31,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:42:31,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:42:31,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:42:31,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:42:31,297 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 -> false [2020-08-27 21:42:31,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:42:31,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:42:31,758 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:42:31,760 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:42:31,760 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:42:31,761 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2020-08-27 21:42:31,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/431a4b3a5/a8463d50ef5640018283d6fa1137a0e5/FLAG6a0b9355a [2020-08-27 21:42:32,474 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:42:32,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2020-08-27 21:42:32,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/431a4b3a5/a8463d50ef5640018283d6fa1137a0e5/FLAG6a0b9355a [2020-08-27 21:42:32,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/431a4b3a5/a8463d50ef5640018283d6fa1137a0e5 [2020-08-27 21:42:32,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:42:32,690 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:42:32,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:42:32,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:42:32,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:42:32,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:42:32" (1/1) ... [2020-08-27 21:42:32,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc7108f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:32, skipping insertion in model container [2020-08-27 21:42:32,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:42:32" (1/1) ... [2020-08-27 21:42:32,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:42:32,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:42:33,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:42:33,238 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:42:33,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:42:33,429 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:42:33,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:33 WrapperNode [2020-08-27 21:42:33,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:42:33,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:42:33,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:42:33,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:42:33,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:33" (1/1) ... [2020-08-27 21:42:33,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:33" (1/1) ... [2020-08-27 21:42:33,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:33" (1/1) ... [2020-08-27 21:42:33,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:33" (1/1) ... [2020-08-27 21:42:33,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:33" (1/1) ... [2020-08-27 21:42:33,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:33" (1/1) ... [2020-08-27 21:42:33,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:33" (1/1) ... [2020-08-27 21:42:33,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:42:33,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:42:33,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:42:33,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:42:33,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:33" (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 [2020-08-27 21:42:33,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:42:33,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:42:33,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:42:33,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:42:33,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:42:33,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:42:33,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:42:33,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:42:33,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:42:33,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-27 21:42:33,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:42:33,645 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:42:33,645 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:42:33,645 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:42:33,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:42:33,646 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:42:33,646 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:42:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:42:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-27 21:42:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:42:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:42:33,648 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:42:33,648 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:42:33,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:42:33,648 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:42:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:42:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:42:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:42:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:42:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:42:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:42:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:42:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-27 21:42:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:42:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:42:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:42:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:42:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:42:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:42:33,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-27 21:42:33,652 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-27 21:42:33,652 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:42:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:42:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:42:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:42:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:42:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:42:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:42:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:42:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:42:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:42:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:42:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:42:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:42:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:42:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:42:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:42:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:42:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:42:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:42:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:42:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:42:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:42:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:42:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:42:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-27 21:42:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:42:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:42:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:42:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:42:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:42:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:42:33,658 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-27 21:42:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:42:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:42:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:42:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:42:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:42:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:42:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:42:33,661 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:42:33,662 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:42:33,662 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:42:33,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:42:33,662 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:42:33,662 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:42:33,662 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:42:33,663 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-27 21:42:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:42:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:42:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:42:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:42:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-27 21:42:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-27 21:42:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:42:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:42:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:42:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:42:34,776 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:42:34,777 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:42:34,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:42:34 BoogieIcfgContainer [2020-08-27 21:42:34,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:42:34,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:42:34,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:42:34,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:42:34,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:42:32" (1/3) ... [2020-08-27 21:42:34,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4754e1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:42:34, skipping insertion in model container [2020-08-27 21:42:34,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:33" (2/3) ... [2020-08-27 21:42:34,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4754e1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:42:34, skipping insertion in model container [2020-08-27 21:42:34,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:42:34" (3/3) ... [2020-08-27 21:42:34,793 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product58.cil.c [2020-08-27 21:42:34,806 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:42:34,818 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:42:34,842 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:42:34,876 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:42:34,876 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:42:34,876 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:42:34,876 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:42:34,876 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:42:34,877 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:42:34,877 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:42:34,877 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:42:34,906 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-27 21:42:34,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-27 21:42:34,918 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:34,919 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] [2020-08-27 21:42:34,920 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:34,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:34,928 INFO L82 PathProgramCache]: Analyzing trace with hash -298144076, now seen corresponding path program 1 times [2020-08-27 21:42:34,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:34,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245733090] [2020-08-27 21:42:34,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:35,766 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:35,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:35,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:35,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:35,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:35,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:35,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:42:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:35,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:42:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:35,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245733090] [2020-08-27 21:42:35,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:35,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-27 21:42:35,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797917967] [2020-08-27 21:42:35,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-27 21:42:35,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:35,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-27 21:42:35,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:42:35,901 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-08-27 21:42:37,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:37,206 INFO L93 Difference]: Finished difference Result 338 states and 432 transitions. [2020-08-27 21:42:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:42:37,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-27 21:42:37,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:37,227 INFO L225 Difference]: With dead ends: 338 [2020-08-27 21:42:37,227 INFO L226 Difference]: Without dead ends: 182 [2020-08-27 21:42:37,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:42:37,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-27 21:42:37,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-08-27 21:42:37,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-27 21:42:37,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 170 transitions. [2020-08-27 21:42:37,341 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 170 transitions. Word has length 46 [2020-08-27 21:42:37,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:37,342 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 170 transitions. [2020-08-27 21:42:37,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-27 21:42:37,342 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 170 transitions. [2020-08-27 21:42:37,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-27 21:42:37,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:37,347 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] [2020-08-27 21:42:37,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:42:37,347 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:37,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:37,348 INFO L82 PathProgramCache]: Analyzing trace with hash -491113124, now seen corresponding path program 1 times [2020-08-27 21:42:37,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:37,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086105707] [2020-08-27 21:42:37,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:37,803 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:37,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:37,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:37,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:37,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:37,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:37,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:42:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:37,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:42:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:37,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086105707] [2020-08-27 21:42:37,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:37,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:42:37,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275818958] [2020-08-27 21:42:37,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:42:37,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:37,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:42:37,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:42:37,863 INFO L87 Difference]: Start difference. First operand 147 states and 170 transitions. Second operand 4 states. [2020-08-27 21:42:38,295 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:39,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:39,346 INFO L93 Difference]: Finished difference Result 267 states and 319 transitions. [2020-08-27 21:42:39,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 21:42:39,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-27 21:42:39,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:39,350 INFO L225 Difference]: With dead ends: 267 [2020-08-27 21:42:39,350 INFO L226 Difference]: Without dead ends: 166 [2020-08-27 21:42:39,352 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 [2020-08-27 21:42:39,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-27 21:42:39,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-27 21:42:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-27 21:42:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-08-27 21:42:39,413 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 47 [2020-08-27 21:42:39,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:39,414 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-08-27 21:42:39,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:42:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-08-27 21:42:39,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-27 21:42:39,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:39,417 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] [2020-08-27 21:42:39,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:42:39,419 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:39,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:39,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1388977157, now seen corresponding path program 1 times [2020-08-27 21:42:39,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:39,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765309310] [2020-08-27 21:42:39,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:39,820 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:39,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:39,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:39,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:39,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:39,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:39,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:42:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:39,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:42:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:39,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:39,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765309310] [2020-08-27 21:42:39,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:39,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:42:39,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344059575] [2020-08-27 21:42:39,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:42:39,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:39,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:42:39,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:42:39,954 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 8 states. [2020-08-27 21:42:40,347 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:40,762 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:41,076 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:41,389 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:42,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:42,912 INFO L93 Difference]: Finished difference Result 280 states and 337 transitions. [2020-08-27 21:42:42,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-27 21:42:42,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-27 21:42:42,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:42,921 INFO L225 Difference]: With dead ends: 280 [2020-08-27 21:42:42,921 INFO L226 Difference]: Without dead ends: 166 [2020-08-27 21:42:42,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:42:42,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-27 21:42:42,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-27 21:42:42,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-27 21:42:42,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 157 transitions. [2020-08-27 21:42:42,961 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 157 transitions. Word has length 52 [2020-08-27 21:42:42,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:42,962 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 157 transitions. [2020-08-27 21:42:42,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:42:42,962 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 157 transitions. [2020-08-27 21:42:42,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-27 21:42:42,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:42,965 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] [2020-08-27 21:42:42,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:42:42,965 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:42,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:42,966 INFO L82 PathProgramCache]: Analyzing trace with hash 105794737, now seen corresponding path program 1 times [2020-08-27 21:42:42,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:42,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182529242] [2020-08-27 21:42:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:43,368 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:43,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:43,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:43,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:43,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:43,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:43,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:42:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:43,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:43,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:43,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-27 21:42:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:43,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-27 21:42:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:43,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182529242] [2020-08-27 21:42:43,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:43,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:42:43,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525196261] [2020-08-27 21:42:43,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:42:43,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:43,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:42:43,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:42:43,479 INFO L87 Difference]: Start difference. First operand 138 states and 157 transitions. Second operand 6 states. [2020-08-27 21:42:43,795 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:45,129 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:45,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:45,886 INFO L93 Difference]: Finished difference Result 377 states and 459 transitions. [2020-08-27 21:42:45,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:42:45,887 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-27 21:42:45,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:45,891 INFO L225 Difference]: With dead ends: 377 [2020-08-27 21:42:45,891 INFO L226 Difference]: Without dead ends: 263 [2020-08-27 21:42:45,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:42:45,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-08-27 21:42:45,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 220. [2020-08-27 21:42:45,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-27 21:42:45,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 248 transitions. [2020-08-27 21:42:45,950 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 248 transitions. Word has length 65 [2020-08-27 21:42:45,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:45,951 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 248 transitions. [2020-08-27 21:42:45,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:42:45,951 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 248 transitions. [2020-08-27 21:42:45,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-27 21:42:45,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:45,953 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] [2020-08-27 21:42:45,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:42:45,954 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:45,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:45,954 INFO L82 PathProgramCache]: Analyzing trace with hash -830596407, now seen corresponding path program 1 times [2020-08-27 21:42:45,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:45,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613379315] [2020-08-27 21:42:45,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:46,341 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:46,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:46,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:46,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:46,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:46,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:42:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:46,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:46,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:46,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:46,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:46,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-27 21:42:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:46,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-27 21:42:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:46,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613379315] [2020-08-27 21:42:46,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:46,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-27 21:42:46,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003730724] [2020-08-27 21:42:46,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:42:46,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:46,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:42:46,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:42:46,491 INFO L87 Difference]: Start difference. First operand 220 states and 248 transitions. Second operand 10 states. [2020-08-27 21:42:46,978 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:47,284 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:47,579 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:48,302 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:48,618 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:48,930 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:50,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:50,123 INFO L93 Difference]: Finished difference Result 460 states and 553 transitions. [2020-08-27 21:42:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:42:50,125 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-08-27 21:42:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:50,128 INFO L225 Difference]: With dead ends: 460 [2020-08-27 21:42:50,128 INFO L226 Difference]: Without dead ends: 264 [2020-08-27 21:42:50,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:42:50,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-08-27 21:42:50,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 224. [2020-08-27 21:42:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-08-27 21:42:50,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 252 transitions. [2020-08-27 21:42:50,179 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 252 transitions. Word has length 79 [2020-08-27 21:42:50,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:50,179 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 252 transitions. [2020-08-27 21:42:50,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:42:50,180 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 252 transitions. [2020-08-27 21:42:50,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-27 21:42:50,181 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:50,182 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] [2020-08-27 21:42:50,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:42:50,182 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:50,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:50,182 INFO L82 PathProgramCache]: Analyzing trace with hash 2078167495, now seen corresponding path program 1 times [2020-08-27 21:42:50,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:50,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696840028] [2020-08-27 21:42:50,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,550 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:50,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:42:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-27 21:42:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-27 21:42:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:42:50,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696840028] [2020-08-27 21:42:50,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:50,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:42:50,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709920587] [2020-08-27 21:42:50,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:42:50,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:50,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:42:50,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:42:50,695 INFO L87 Difference]: Start difference. First operand 224 states and 252 transitions. Second operand 12 states. [2020-08-27 21:42:51,081 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:51,451 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:51,733 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:52,028 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:52,628 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:42:53,708 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:54,088 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:42:54,399 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:42:54,761 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:42:55,128 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:42:55,460 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:42:57,051 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:42:57,554 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:42:58,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:58,361 INFO L93 Difference]: Finished difference Result 789 states and 997 transitions. [2020-08-27 21:42:58,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-27 21:42:58,362 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-27 21:42:58,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:58,368 INFO L225 Difference]: With dead ends: 789 [2020-08-27 21:42:58,368 INFO L226 Difference]: Without dead ends: 589 [2020-08-27 21:42:58,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-27 21:42:58,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-08-27 21:42:58,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 527. [2020-08-27 21:42:58,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-08-27 21:42:58,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 609 transitions. [2020-08-27 21:42:58,474 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 609 transitions. Word has length 79 [2020-08-27 21:42:58,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:58,475 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 609 transitions. [2020-08-27 21:42:58,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:42:58,475 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 609 transitions. [2020-08-27 21:42:58,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-27 21:42:58,479 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:58,480 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] [2020-08-27 21:42:58,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:42:58,481 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:58,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:58,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1201141545, now seen corresponding path program 1 times [2020-08-27 21:42:58,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:58,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000450132] [2020-08-27 21:42:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:58,827 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:42:58,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:58,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:58,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:42:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:58,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:58,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:42:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:42:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:58,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:42:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:58,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:58,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:42:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:42:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-27 21:42:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-27 21:42:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:42:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-27 21:42:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-27 21:42:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-08-27 21:42:59,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000450132] [2020-08-27 21:42:59,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:42:59,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-27 21:42:59,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755198983] [2020-08-27 21:42:59,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-27 21:42:59,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:59,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-27 21:42:59,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-27 21:42:59,141 INFO L87 Difference]: Start difference. First operand 527 states and 609 transitions. Second operand 13 states. [2020-08-27 21:42:59,573 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:43:00,305 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:43:01,010 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:43:01,354 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:43:01,702 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:43:02,005 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:43:02,339 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:43:02,667 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:43:03,007 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:43:03,346 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:43:05,316 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:43:05,635 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:43:05,934 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:43:06,221 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:43:06,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:43:06,824 INFO L93 Difference]: Finished difference Result 937 states and 1177 transitions. [2020-08-27 21:43:06,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-27 21:43:06,825 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-08-27 21:43:06,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:43:06,829 INFO L225 Difference]: With dead ends: 937 [2020-08-27 21:43:06,830 INFO L226 Difference]: Without dead ends: 434 [2020-08-27 21:43:06,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2020-08-27 21:43:06,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-08-27 21:43:06,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 380. [2020-08-27 21:43:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-08-27 21:43:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 443 transitions. [2020-08-27 21:43:06,925 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 443 transitions. Word has length 154 [2020-08-27 21:43:06,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:43:06,926 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 443 transitions. [2020-08-27 21:43:06,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-27 21:43:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 443 transitions. [2020-08-27 21:43:06,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-27 21:43:06,929 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:43:06,929 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] [2020-08-27 21:43:06,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:43:06,930 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:43:06,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:43:06,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1319690960, now seen corresponding path program 1 times [2020-08-27 21:43:06,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:43:06,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312468909] [2020-08-27 21:43:06,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:43:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,254 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:43:07,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:43:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:43:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:43:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:43:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:43:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:43:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:43:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:43:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:43:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:43:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-27 21:43:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-27 21:43:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-27 21:43:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-27 21:43:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-27 21:43:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-27 21:43:07,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312468909] [2020-08-27 21:43:07,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:43:07,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-27 21:43:07,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598515467] [2020-08-27 21:43:07,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:43:07,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:43:07,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:43:07,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:43:07,462 INFO L87 Difference]: Start difference. First operand 380 states and 443 transitions. Second operand 10 states. [2020-08-27 21:43:09,086 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:43:09,374 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:43:09,680 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:43:09,977 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:43:10,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:43:10,408 INFO L93 Difference]: Finished difference Result 704 states and 848 transitions. [2020-08-27 21:43:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:43:10,408 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-08-27 21:43:10,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:43:10,412 INFO L225 Difference]: With dead ends: 704 [2020-08-27 21:43:10,412 INFO L226 Difference]: Without dead ends: 411 [2020-08-27 21:43:10,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:43:10,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-08-27 21:43:10,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 385. [2020-08-27 21:43:10,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-27 21:43:10,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 448 transitions. [2020-08-27 21:43:10,504 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 448 transitions. Word has length 149 [2020-08-27 21:43:10,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:43:10,506 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 448 transitions. [2020-08-27 21:43:10,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:43:10,506 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 448 transitions. [2020-08-27 21:43:10,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-27 21:43:10,509 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:43:10,509 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] [2020-08-27 21:43:10,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:43:10,509 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:43:10,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:43:10,510 INFO L82 PathProgramCache]: Analyzing trace with hash 810217870, now seen corresponding path program 1 times [2020-08-27 21:43:10,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:43:10,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291740043] [2020-08-27 21:43:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:43:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,827 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:43:10,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:43:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:43:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:43:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:43:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:43:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:43:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:43:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:43:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:43:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:43:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-27 21:43:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-27 21:43:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-27 21:43:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-27 21:43:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:10,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-27 21:43:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-27 21:43:11,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291740043] [2020-08-27 21:43:11,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:43:11,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-27 21:43:11,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12940415] [2020-08-27 21:43:11,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:43:11,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:43:11,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:43:11,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:43:11,043 INFO L87 Difference]: Start difference. First operand 385 states and 448 transitions. Second operand 10 states. [2020-08-27 21:43:11,442 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:43:13,375 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:43:13,681 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:43:13,977 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:43:14,273 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:43:14,630 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:43:15,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:43:15,048 INFO L93 Difference]: Finished difference Result 418 states and 500 transitions. [2020-08-27 21:43:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-27 21:43:15,049 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-08-27 21:43:15,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:43:15,053 INFO L225 Difference]: With dead ends: 418 [2020-08-27 21:43:15,053 INFO L226 Difference]: Without dead ends: 415 [2020-08-27 21:43:15,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-27 21:43:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-08-27 21:43:15,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 385. [2020-08-27 21:43:15,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-27 21:43:15,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 447 transitions. [2020-08-27 21:43:15,129 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 447 transitions. Word has length 149 [2020-08-27 21:43:15,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:43:15,130 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 447 transitions. [2020-08-27 21:43:15,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:43:15,130 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 447 transitions. [2020-08-27 21:43:15,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-27 21:43:15,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:43:15,132 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] [2020-08-27 21:43:15,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:43:15,133 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:43:15,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:43:15,133 INFO L82 PathProgramCache]: Analyzing trace with hash -488644751, now seen corresponding path program 1 times [2020-08-27 21:43:15,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:43:15,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37294513] [2020-08-27 21:43:15,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:43:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,520 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:43:15,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:43:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:43:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:43:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:43:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:43:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:43:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:43:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:43:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:43:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:43:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-27 21:43:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-27 21:43:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-27 21:43:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-27 21:43:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-27 21:43:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-27 21:43:15,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37294513] [2020-08-27 21:43:15,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:43:15,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-27 21:43:15,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237080410] [2020-08-27 21:43:15,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:43:15,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:43:15,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:43:15,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:43:15,771 INFO L87 Difference]: Start difference. First operand 385 states and 447 transitions. Second operand 12 states. [2020-08-27 21:43:16,196 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:43:16,940 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:43:17,910 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:43:18,263 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:43:18,561 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:43:18,881 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:43:19,224 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:43:19,533 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:43:21,068 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:43:21,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:43:22,000 INFO L93 Difference]: Finished difference Result 922 states and 1160 transitions. [2020-08-27 21:43:22,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-27 21:43:22,001 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 153 [2020-08-27 21:43:22,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:43:22,006 INFO L225 Difference]: With dead ends: 922 [2020-08-27 21:43:22,006 INFO L226 Difference]: Without dead ends: 624 [2020-08-27 21:43:22,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-27 21:43:22,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-08-27 21:43:22,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 528. [2020-08-27 21:43:22,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-08-27 21:43:22,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 621 transitions. [2020-08-27 21:43:22,105 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 621 transitions. Word has length 153 [2020-08-27 21:43:22,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:43:22,108 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 621 transitions. [2020-08-27 21:43:22,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:43:22,108 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 621 transitions. [2020-08-27 21:43:22,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-27 21:43:22,112 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:43:22,112 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] [2020-08-27 21:43:22,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-27 21:43:22,113 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:43:22,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:43:22,115 INFO L82 PathProgramCache]: Analyzing trace with hash 700598337, now seen corresponding path program 2 times [2020-08-27 21:43:22,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:43:22,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87258618] [2020-08-27 21:43:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:43:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,500 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:43:22,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:43:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:43:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:43:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:43:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:43:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-27 21:43:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:43:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:43:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:43:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:43:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-27 21:43:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:43:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-27 21:43:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:43:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-27 21:43:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-27 21:43:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-27 21:43:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-27 21:43:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-27 21:43:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-27 21:43:22,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87258618] [2020-08-27 21:43:22,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:43:22,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-27 21:43:22,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360030492] [2020-08-27 21:43:22,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-27 21:43:22,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:43:22,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-27 21:43:22,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-27 21:43:22,877 INFO L87 Difference]: Start difference. First operand 528 states and 621 transitions. Second operand 13 states. [2020-08-27 21:43:23,858 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:43:24,177 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:43:26,079 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:43:26,404 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:43:26,711 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:43:27,276 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-27 21:43:29,154 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-27 21:43:29,480 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:43:29,843 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:43:30,161 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191