/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_spec5_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:13:31,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:13:31,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:13:31,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:13:31,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:13:31,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:13:31,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:13:31,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:13:31,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:13:31,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:13:31,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:13:31,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:13:31,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:13:31,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:13:31,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:13:31,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:13:31,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:13:31,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:13:31,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:13:31,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:13:31,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:13:31,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:13:31,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:13:31,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:13:31,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:13:31,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:13:31,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:13:31,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:13:31,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:13:31,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:13:31,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:13:31,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:13:31,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:13:31,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:13:31,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:13:31,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:13:31,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:13:31,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:13:31,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:13:31,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:13:31,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:13:31,884 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 [2020-09-21 10:13:31,932 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:13:31,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:13:31,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:13:31,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:13:31,935 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:13:31,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:13:31,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:13:31,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:13:31,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:13:31,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:13:31,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:13:31,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:13:31,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:13:31,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:13:31,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:13:31,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:13:31,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:13:31,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:13:31,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:13:31,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:13:31,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:13:31,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:13:31,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:13:31,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:13:31,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:13:31,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:13:31,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:13:31,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:13:31,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:13:31,942 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 [2020-09-21 10:13:32,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:13:32,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:13:32,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:13:32,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:13:32,399 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:13:32,400 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product34.cil.c [2020-09-21 10:13:32,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb0b2c013/fd4d76d2312d49949f3f3903e1c490f6/FLAGc22c93061 [2020-09-21 10:13:33,065 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:13:33,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product34.cil.c [2020-09-21 10:13:33,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb0b2c013/fd4d76d2312d49949f3f3903e1c490f6/FLAGc22c93061 [2020-09-21 10:13:33,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb0b2c013/fd4d76d2312d49949f3f3903e1c490f6 [2020-09-21 10:13:33,305 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:13:33,310 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:13:33,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:13:33,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:13:33,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:13:33,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:13:33" (1/1) ... [2020-09-21 10:13:33,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:33, skipping insertion in model container [2020-09-21 10:13:33,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:13:33" (1/1) ... [2020-09-21 10:13:33,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:13:33,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:13:33,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:13:33,924 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:13:34,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:13:34,043 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:13:34,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:34 WrapperNode [2020-09-21 10:13:34,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:13:34,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:13:34,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:13:34,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:13:34,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:34" (1/1) ... [2020-09-21 10:13:34,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:34" (1/1) ... [2020-09-21 10:13:34,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:34" (1/1) ... [2020-09-21 10:13:34,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:34" (1/1) ... [2020-09-21 10:13:34,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:34" (1/1) ... [2020-09-21 10:13:34,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:34" (1/1) ... [2020-09-21 10:13:34,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:34" (1/1) ... [2020-09-21 10:13:34,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:13:34,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:13:34,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:13:34,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:13:34,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:34" (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 [2020-09-21 10:13:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:13:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:13:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:13:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:13:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:13:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:13:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:13:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:13:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:13:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:13:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:13:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:13:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:13:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:13:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:13:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:13:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:13:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:13:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:13:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:13:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:13:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:13:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:13:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:13:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:13:34,222 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:13:34,222 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:13:34,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:13:34,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:13:34,222 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:13:34,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:13:34,223 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 10:13:34,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-09-21 10:13:34,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-09-21 10:13:34,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-09-21 10:13:34,223 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:13:34,224 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:13:34,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:13:34,224 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:13:34,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:13:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:13:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:13:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:13:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:13:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:13:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:13:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:13:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:13:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:13:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:13:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:13:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:13:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:13:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:13:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:13:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:13:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:13:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:13:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:13:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:13:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:13:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:13:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:13:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:13:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:13:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:13:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:13:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:13:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:13:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:13:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:13:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:13:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 10:13:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:13:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:13:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:13:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:13:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:13:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:13:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:13:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-09-21 10:13:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-09-21 10:13:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:13:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:13:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:13:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:13:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-09-21 10:13:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:13:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:13:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:13:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:13:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:13:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:13:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:13:35,300 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:13:35,300 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:13:35,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:13:35 BoogieIcfgContainer [2020-09-21 10:13:35,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:13:35,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:13:35,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:13:35,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:13:35,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:13:33" (1/3) ... [2020-09-21 10:13:35,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f78521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:13:35, skipping insertion in model container [2020-09-21 10:13:35,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:34" (2/3) ... [2020-09-21 10:13:35,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f78521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:13:35, skipping insertion in model container [2020-09-21 10:13:35,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:13:35" (3/3) ... [2020-09-21 10:13:35,315 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product34.cil.c [2020-09-21 10:13:35,326 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:13:35,336 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:13:35,358 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:13:35,388 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:13:35,388 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:13:35,388 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:13:35,388 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:13:35,388 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:13:35,388 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:13:35,388 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:13:35,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:13:35,412 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-09-21 10:13:35,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-21 10:13:35,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:35,424 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:13:35,424 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:35,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:35,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1468621358, now seen corresponding path program 1 times [2020-09-21 10:13:35,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:35,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55678602] [2020-09-21 10:13:35,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,139 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:36,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:13:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:13:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:13:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:36,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55678602] [2020-09-21 10:13:36,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:36,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:13:36,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194372946] [2020-09-21 10:13:36,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:13:36,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:36,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:13:36,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:13:36,344 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states. [2020-09-21 10:13:37,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:37,312 INFO L93 Difference]: Finished difference Result 265 states and 344 transitions. [2020-09-21 10:13:37,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:13:37,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-09-21 10:13:37,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:37,331 INFO L225 Difference]: With dead ends: 265 [2020-09-21 10:13:37,332 INFO L226 Difference]: Without dead ends: 147 [2020-09-21 10:13:37,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:13:37,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-09-21 10:13:37,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2020-09-21 10:13:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-21 10:13:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2020-09-21 10:13:37,437 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 59 [2020-09-21 10:13:37,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:13:37,437 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2020-09-21 10:13:37,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:13:37,438 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2020-09-21 10:13:37,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-21 10:13:37,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:37,445 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:13:37,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:13:37,446 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:37,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:37,447 INFO L82 PathProgramCache]: Analyzing trace with hash 732022184, now seen corresponding path program 1 times [2020-09-21 10:13:37,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:37,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771582849] [2020-09-21 10:13:37,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,884 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:37,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:13:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:13:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 10:13:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:37,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771582849] [2020-09-21 10:13:37,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:37,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:13:37,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465514216] [2020-09-21 10:13:37,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:13:37,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:37,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:13:37,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:13:37,992 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 5 states. [2020-09-21 10:13:38,501 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:39,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:39,276 INFO L93 Difference]: Finished difference Result 206 states and 252 transitions. [2020-09-21 10:13:39,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:13:39,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-09-21 10:13:39,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:39,282 INFO L225 Difference]: With dead ends: 206 [2020-09-21 10:13:39,282 INFO L226 Difference]: Without dead ends: 137 [2020-09-21 10:13:39,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:13:39,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-21 10:13:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 110. [2020-09-21 10:13:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-21 10:13:39,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2020-09-21 10:13:39,322 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 60 [2020-09-21 10:13:39,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:13:39,323 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2020-09-21 10:13:39,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:13:39,323 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2020-09-21 10:13:39,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-21 10:13:39,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:39,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:13:39,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:13:39,329 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:39,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:39,329 INFO L82 PathProgramCache]: Analyzing trace with hash -69452161, now seen corresponding path program 1 times [2020-09-21 10:13:39,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:39,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322636397] [2020-09-21 10:13:39,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,799 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:39,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:13:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:13:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-21 10:13:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:39,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322636397] [2020-09-21 10:13:39,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:39,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:13:39,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421282098] [2020-09-21 10:13:39,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:13:39,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:39,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:13:39,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:13:39,936 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand 9 states. [2020-09-21 10:13:40,381 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:13:40,732 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:41,045 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:41,363 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:42,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:42,437 INFO L93 Difference]: Finished difference Result 219 states and 271 transitions. [2020-09-21 10:13:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:13:42,438 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-09-21 10:13:42,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:42,441 INFO L225 Difference]: With dead ends: 219 [2020-09-21 10:13:42,441 INFO L226 Difference]: Without dead ends: 137 [2020-09-21 10:13:42,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:13:42,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-21 10:13:42,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 110. [2020-09-21 10:13:42,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-21 10:13:42,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2020-09-21 10:13:42,495 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 65 [2020-09-21 10:13:42,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:13:42,497 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2020-09-21 10:13:42,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:13:42,497 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2020-09-21 10:13:42,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-21 10:13:42,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:42,502 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:13:42,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:13:42,502 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:42,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:42,503 INFO L82 PathProgramCache]: Analyzing trace with hash -752044170, now seen corresponding path program 1 times [2020-09-21 10:13:42,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:42,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904826829] [2020-09-21 10:13:42,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,867 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:42,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:13:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:13:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:13:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-21 10:13:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 10:13:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:42,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:42,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904826829] [2020-09-21 10:13:42,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:42,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:13:42,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602712327] [2020-09-21 10:13:42,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:13:42,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:42,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:13:42,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:13:42,993 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand 7 states. [2020-09-21 10:13:43,418 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:13:44,955 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:45,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:45,369 INFO L93 Difference]: Finished difference Result 314 states and 394 transitions. [2020-09-21 10:13:45,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 10:13:45,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 73 [2020-09-21 10:13:45,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:45,374 INFO L225 Difference]: With dead ends: 314 [2020-09-21 10:13:45,374 INFO L226 Difference]: Without dead ends: 232 [2020-09-21 10:13:45,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:13:45,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-09-21 10:13:45,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 186. [2020-09-21 10:13:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-09-21 10:13:45,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 215 transitions. [2020-09-21 10:13:45,416 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 215 transitions. Word has length 73 [2020-09-21 10:13:45,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:13:45,416 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 215 transitions. [2020-09-21 10:13:45,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:13:45,416 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 215 transitions. [2020-09-21 10:13:45,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-21 10:13:45,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:45,418 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:13:45,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:13:45,418 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:45,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:45,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1770960597, now seen corresponding path program 1 times [2020-09-21 10:13:45,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:45,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938715570] [2020-09-21 10:13:45,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,768 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:45,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:13:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:13:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:13:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:13:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:13:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-21 10:13:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 10:13:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:45,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 10:13:45,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938715570] [2020-09-21 10:13:45,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:45,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:13:45,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264084854] [2020-09-21 10:13:45,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:13:45,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:45,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:13:45,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:13:45,909 INFO L87 Difference]: Start difference. First operand 186 states and 215 transitions. Second operand 9 states. [2020-09-21 10:13:46,371 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:13:47,132 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:47,808 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:13:48,208 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:48,759 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:49,054 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:49,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:49,477 INFO L93 Difference]: Finished difference Result 389 states and 479 transitions. [2020-09-21 10:13:49,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:13:49,480 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-21 10:13:49,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:49,483 INFO L225 Difference]: With dead ends: 389 [2020-09-21 10:13:49,483 INFO L226 Difference]: Without dead ends: 231 [2020-09-21 10:13:49,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:13:49,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-21 10:13:49,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 185. [2020-09-21 10:13:49,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-09-21 10:13:49,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 212 transitions. [2020-09-21 10:13:49,526 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 212 transitions. Word has length 87 [2020-09-21 10:13:49,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:13:49,527 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 212 transitions. [2020-09-21 10:13:49,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:13:49,527 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 212 transitions. [2020-09-21 10:13:49,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-21 10:13:49,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:49,529 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:13:49,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:13:49,529 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:49,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:49,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1107726217, now seen corresponding path program 1 times [2020-09-21 10:13:49,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:49,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895559332] [2020-09-21 10:13:49,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,880 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:49,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:13:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:13:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:49,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:13:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:50,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:13:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:50,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:13:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:50,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-21 10:13:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:50,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-21 10:13:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:50,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:50,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895559332] [2020-09-21 10:13:50,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:50,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:13:50,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237953974] [2020-09-21 10:13:50,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:13:50,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:50,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:13:50,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:13:50,029 INFO L87 Difference]: Start difference. First operand 185 states and 212 transitions. Second operand 9 states. [2020-09-21 10:13:51,087 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:51,403 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:13:51,727 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:52,016 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:52,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:52,644 INFO L93 Difference]: Finished difference Result 387 states and 475 transitions. [2020-09-21 10:13:52,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:13:52,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-09-21 10:13:52,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:52,647 INFO L225 Difference]: With dead ends: 387 [2020-09-21 10:13:52,647 INFO L226 Difference]: Without dead ends: 230 [2020-09-21 10:13:52,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:13:52,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-21 10:13:52,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 190. [2020-09-21 10:13:52,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-21 10:13:52,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 217 transitions. [2020-09-21 10:13:52,687 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 217 transitions. Word has length 88 [2020-09-21 10:13:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:13:52,688 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 217 transitions. [2020-09-21 10:13:52,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:13:52,688 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 217 transitions. [2020-09-21 10:13:52,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-21 10:13:52,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:52,690 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:13:52,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:13:52,690 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:52,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:52,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1801037685, now seen corresponding path program 1 times [2020-09-21 10:13:52,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:52,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545917288] [2020-09-21 10:13:52,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,045 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:53,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:13:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:13:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:13:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:13:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:13:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-21 10:13:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-21 10:13:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:53,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545917288] [2020-09-21 10:13:53,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:53,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 10:13:53,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731711096] [2020-09-21 10:13:53,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 10:13:53,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:53,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 10:13:53,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:13:53,204 INFO L87 Difference]: Start difference. First operand 190 states and 217 transitions. Second operand 11 states. [2020-09-21 10:13:53,783 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:54,105 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:54,391 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:55,210 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:55,526 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:55,853 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:56,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:56,628 INFO L93 Difference]: Finished difference Result 399 states and 494 transitions. [2020-09-21 10:13:56,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:13:56,629 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-09-21 10:13:56,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:56,631 INFO L225 Difference]: With dead ends: 399 [2020-09-21 10:13:56,631 INFO L226 Difference]: Without dead ends: 237 [2020-09-21 10:13:56,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:13:56,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-21 10:13:56,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 194. [2020-09-21 10:13:56,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-21 10:13:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 221 transitions. [2020-09-21 10:13:56,669 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 221 transitions. Word has length 88 [2020-09-21 10:13:56,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:13:56,669 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 221 transitions. [2020-09-21 10:13:56,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 10:13:56,669 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 221 transitions. [2020-09-21 10:13:56,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-21 10:13:56,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:56,670 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:13:56,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:13:56,670 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:56,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:56,671 INFO L82 PathProgramCache]: Analyzing trace with hash 310252684, now seen corresponding path program 1 times [2020-09-21 10:13:56,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:56,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288636672] [2020-09-21 10:13:56,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,039 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:57,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:13:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:13:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:13:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:13:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:13:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-21 10:13:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-21 10:13:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:57,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:57,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288636672] [2020-09-21 10:13:57,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:57,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:13:57,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392757072] [2020-09-21 10:13:57,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:13:57,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:57,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:13:57,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:13:57,236 INFO L87 Difference]: Start difference. First operand 194 states and 221 transitions. Second operand 7 states. [2020-09-21 10:13:57,726 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:13:58,375 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:13:59,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:59,989 INFO L93 Difference]: Finished difference Result 571 states and 717 transitions. [2020-09-21 10:13:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 10:13:59,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-09-21 10:13:59,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:59,993 INFO L225 Difference]: With dead ends: 571 [2020-09-21 10:13:59,994 INFO L226 Difference]: Without dead ends: 405 [2020-09-21 10:13:59,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:13:59,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-09-21 10:14:00,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 363. [2020-09-21 10:14:00,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-09-21 10:14:00,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 424 transitions. [2020-09-21 10:14:00,088 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 424 transitions. Word has length 88 [2020-09-21 10:14:00,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:00,089 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 424 transitions. [2020-09-21 10:14:00,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:14:00,089 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 424 transitions. [2020-09-21 10:14:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-21 10:14:00,093 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:00,093 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:14:00,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:14:00,093 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:00,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:00,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1394429222, now seen corresponding path program 1 times [2020-09-21 10:14:00,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:00,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004991624] [2020-09-21 10:14:00,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,537 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:00,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:14:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:14:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-21 10:14:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-21 10:14:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-21 10:14:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:14:00,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004991624] [2020-09-21 10:14:00,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:14:00,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 10:14:00,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958681751] [2020-09-21 10:14:00,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:14:00,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:00,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:14:00,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:14:00,738 INFO L87 Difference]: Start difference. First operand 363 states and 424 transitions. Second operand 12 states. [2020-09-21 10:14:01,247 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:01,940 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:03,051 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:03,427 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:03,732 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:04,065 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:04,393 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:05,252 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:05,577 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:06,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:06,202 INFO L93 Difference]: Finished difference Result 1001 states and 1242 transitions. [2020-09-21 10:14:06,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-21 10:14:06,203 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2020-09-21 10:14:06,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:06,208 INFO L225 Difference]: With dead ends: 1001 [2020-09-21 10:14:06,208 INFO L226 Difference]: Without dead ends: 735 [2020-09-21 10:14:06,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=296, Invalid=964, Unknown=0, NotChecked=0, Total=1260 [2020-09-21 10:14:06,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2020-09-21 10:14:06,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 616. [2020-09-21 10:14:06,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2020-09-21 10:14:06,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 712 transitions. [2020-09-21 10:14:06,319 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 712 transitions. Word has length 92 [2020-09-21 10:14:06,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:06,320 INFO L479 AbstractCegarLoop]: Abstraction has 616 states and 712 transitions. [2020-09-21 10:14:06,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:14:06,320 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 712 transitions. [2020-09-21 10:14:06,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-21 10:14:06,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:06,322 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:14:06,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:14:06,323 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:06,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:06,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1563029790, now seen corresponding path program 1 times [2020-09-21 10:14:06,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:06,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458803710] [2020-09-21 10:14:06,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,709 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:06,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:14:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 10:14:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:14:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:14:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-21 10:14:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-21 10:14:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-21 10:14:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-21 10:14:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-21 10:14:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 10:14:07,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458803710] [2020-09-21 10:14:07,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:14:07,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-21 10:14:07,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375855832] [2020-09-21 10:14:07,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-21 10:14:07,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:07,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-21 10:14:07,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-09-21 10:14:07,097 INFO L87 Difference]: Start difference. First operand 616 states and 712 transitions. Second operand 16 states. [2020-09-21 10:14:07,862 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:08,260 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-21 10:14:08,582 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:08,902 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:09,733 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-21 10:14:10,077 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:14:10,600 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-09-21 10:14:11,316 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:11,760 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-09-21 10:14:13,146 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-21 10:14:13,508 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-09-21 10:14:14,158 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-09-21 10:14:14,528 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:15,398 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-09-21 10:14:16,340 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-09-21 10:14:16,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:16,682 INFO L93 Difference]: Finished difference Result 973 states and 1146 transitions. [2020-09-21 10:14:16,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-21 10:14:16,684 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 136 [2020-09-21 10:14:16,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:16,685 INFO L225 Difference]: With dead ends: 973 [2020-09-21 10:14:16,685 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 10:14:16,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=463, Invalid=1699, Unknown=0, NotChecked=0, Total=2162 [2020-09-21 10:14:16,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 10:14:16,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 10:14:16,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 10:14:16,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 10:14:16,690 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2020-09-21 10:14:16,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:16,690 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 10:14:16,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-21 10:14:16,691 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 10:14:16,691 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 10:14:16,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:14:16,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 10:14:16,908 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:17,083 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:17,273 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-21 10:14:17,449 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:17,811 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2020-09-21 10:14:18,206 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2020-09-21 10:14:18,379 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-21 10:14:18,540 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:20,491 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 256 DAG size of output: 233 [2020-09-21 10:14:20,662 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:20,828 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-21 10:14:21,011 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:21,180 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 194 [2020-09-21 10:14:21,344 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-21 10:14:21,687 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2020-09-21 10:14:21,853 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-21 10:14:22,095 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:22,262 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:22,431 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:22,606 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 194 [2020-09-21 10:14:22,768 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:22,933 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:14:23,095 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:23,267 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:23,427 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-21 10:14:23,750 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-09-21 10:14:24,084 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:24,240 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:24,397 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:14:24,733 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2020-09-21 10:14:25,050 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2020-09-21 10:14:25,213 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:25,374 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-21 10:14:25,534 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:25,697 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:25,868 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 195 [2020-09-21 10:14:26,058 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 202 [2020-09-21 10:14:26,282 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 204 [2020-09-21 10:14:26,427 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:26,598 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 195 [2020-09-21 10:14:28,398 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 259 DAG size of output: 237 [2020-09-21 10:14:28,560 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:28,720 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:29,041 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-09-21 10:14:29,384 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:29,541 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:14:29,875 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2020-09-21 10:14:30,193 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2020-09-21 10:14:30,355 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:30,515 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:30,676 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-21 10:14:30,849 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:31,010 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-09-21 10:14:31,182 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 194 [2020-09-21 10:14:31,344 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:14:31,507 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:31,669 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192