/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:21:22,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:21:22,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:21:22,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:21:22,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:21:22,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:21:22,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:21:22,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:21:22,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:21:22,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:21:22,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:21:22,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:21:22,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:21:22,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:21:22,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:21:22,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:21:22,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:21:22,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:21:22,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:21:22,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:21:22,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:21:22,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:21:22,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:21:22,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:21:22,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:21:22,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:21:22,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:21:22,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:21:22,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:21:22,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:21:22,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:21:22,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:21:22,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:21:22,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:21:22,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:21:22,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:21:22,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:21:22,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:21:22,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:21:22,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:21:22,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:21:22,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 15:21:22,977 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:21:22,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:21:22,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:21:22,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:21:22,979 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:21:22,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:21:22,980 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:21:22,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:21:22,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:21:22,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:21:22,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:21:22,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:21:22,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:21:22,981 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:21:22,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:21:22,981 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:21:22,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:21:22,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:21:22,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:21:22,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:21:22,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:21:22,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:21:22,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:21:22,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:21:22,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:21:22,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:21:22,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:21:22,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:21:22,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:21:22,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 15:21:23,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:21:23,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:21:23,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:21:23,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:21:23,321 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:21:23,322 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2020-08-18 15:21:23,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e56a53560/c27e65952fe0470aa3911deeaa2f0b9f/FLAG94d5196ca [2020-08-18 15:21:23,873 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:21:23,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2020-08-18 15:21:23,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e56a53560/c27e65952fe0470aa3911deeaa2f0b9f/FLAG94d5196ca [2020-08-18 15:21:24,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e56a53560/c27e65952fe0470aa3911deeaa2f0b9f [2020-08-18 15:21:24,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:21:24,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:21:24,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:21:24,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:21:24,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:21:24,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:21:24" (1/1) ... [2020-08-18 15:21:24,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@672f57de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:24, skipping insertion in model container [2020-08-18 15:21:24,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:21:24" (1/1) ... [2020-08-18 15:21:24,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:21:24,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:21:24,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:21:24,724 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:21:24,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:21:24,856 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:21:24,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:24 WrapperNode [2020-08-18 15:21:24,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:21:24,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:21:24,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:21:24,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:21:24,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:24" (1/1) ... [2020-08-18 15:21:24,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:24" (1/1) ... [2020-08-18 15:21:24,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:24" (1/1) ... [2020-08-18 15:21:24,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:24" (1/1) ... [2020-08-18 15:21:24,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:24" (1/1) ... [2020-08-18 15:21:24,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:24" (1/1) ... [2020-08-18 15:21:24,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:24" (1/1) ... [2020-08-18 15:21:24,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:21:24,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:21:24,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:21:24,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:21:24,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:21:25,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:21:25,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:21:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 15:21:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 15:21:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 15:21:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 15:21:25,051 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 15:21:25,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:21:25,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 15:21:25,051 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 15:21:25,052 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 15:21:25,052 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 15:21:25,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 15:21:25,053 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 15:21:25,053 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 15:21:25,054 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 15:21:25,054 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 15:21:25,054 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 15:21:25,054 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 15:21:25,054 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 15:21:25,054 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 15:21:25,055 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 15:21:25,055 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 15:21:25,055 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 15:21:25,055 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 15:21:25,056 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 15:21:25,056 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 15:21:25,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 15:21:25,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 15:21:25,056 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 15:21:25,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 15:21:25,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 15:21:25,057 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 15:21:25,057 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 15:21:25,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 15:21:25,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 15:21:25,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 15:21:25,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 15:21:25,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 15:21:25,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 15:21:25,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 15:21:25,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:21:25,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:21:25,059 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 15:21:25,059 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 15:21:25,059 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 15:21:25,059 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 15:21:25,059 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 15:21:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 15:21:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 15:21:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 15:21:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 15:21:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 15:21:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 15:21:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 15:21:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 15:21:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:21:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 15:21:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 15:21:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 15:21:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 15:21:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 15:21:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 15:21:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 15:21:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 15:21:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 15:21:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:21:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 15:21:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 15:21:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 15:21:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 15:21:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 15:21:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 15:21:25,065 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 15:21:25,066 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 15:21:25,066 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 15:21:25,066 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 15:21:25,066 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 15:21:25,067 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:21:25,067 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:21:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 15:21:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:21:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:21:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:21:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:21:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 15:21:25,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:21:25,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 15:21:25,069 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 15:21:25,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:21:25,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 15:21:25,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 15:21:25,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 15:21:25,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:21:25,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 15:21:25,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:21:26,177 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:21:26,177 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 15:21:26,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:21:26 BoogieIcfgContainer [2020-08-18 15:21:26,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:21:26,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:21:26,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:21:26,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:21:26,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:21:24" (1/3) ... [2020-08-18 15:21:26,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20bea4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:21:26, skipping insertion in model container [2020-08-18 15:21:26,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:24" (2/3) ... [2020-08-18 15:21:26,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20bea4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:21:26, skipping insertion in model container [2020-08-18 15:21:26,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:21:26" (3/3) ... [2020-08-18 15:21:26,199 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product51.cil.c [2020-08-18 15:21:26,209 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:21:26,218 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:21:26,231 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:21:26,256 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:21:26,257 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:21:26,257 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:21:26,257 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:21:26,257 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:21:26,258 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:21:26,258 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:21:26,258 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:21:26,282 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-18 15:21:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 15:21:26,292 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:26,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:26,294 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:26,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:26,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1091923628, now seen corresponding path program 1 times [2020-08-18 15:21:26,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:26,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129811936] [2020-08-18 15:21:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:26,953 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:26,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:27,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:27,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:27,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:27,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:27,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:21:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:27,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:21:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:21:27,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129811936] [2020-08-18 15:21:27,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:27,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 15:21:27,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630277348] [2020-08-18 15:21:27,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 15:21:27,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:27,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 15:21:27,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:21:27,115 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-08-18 15:21:28,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:28,315 INFO L93 Difference]: Finished difference Result 311 states and 407 transitions. [2020-08-18 15:21:28,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:21:28,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 15:21:28,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:28,333 INFO L225 Difference]: With dead ends: 311 [2020-08-18 15:21:28,333 INFO L226 Difference]: Without dead ends: 168 [2020-08-18 15:21:28,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:21:28,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-18 15:21:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2020-08-18 15:21:28,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-18 15:21:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-08-18 15:21:28,435 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 46 [2020-08-18 15:21:28,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:28,436 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-08-18 15:21:28,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 15:21:28,436 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-08-18 15:21:28,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 15:21:28,444 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:28,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:28,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:21:28,445 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:28,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:28,446 INFO L82 PathProgramCache]: Analyzing trace with hash 644500822, now seen corresponding path program 1 times [2020-08-18 15:21:28,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:28,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251725920] [2020-08-18 15:21:28,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:28,849 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:28,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:28,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:28,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:28,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:28,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:28,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:21:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:28,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:21:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:21:28,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251725920] [2020-08-18 15:21:28,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:28,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:21:28,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566133003] [2020-08-18 15:21:28,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:21:28,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:28,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:21:28,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:21:28,906 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 4 states. [2020-08-18 15:21:29,343 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:30,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:30,150 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-18 15:21:30,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:21:30,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 15:21:30,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:30,155 INFO L225 Difference]: With dead ends: 238 [2020-08-18 15:21:30,155 INFO L226 Difference]: Without dead ends: 152 [2020-08-18 15:21:30,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:21:30,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-18 15:21:30,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 125. [2020-08-18 15:21:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-18 15:21:30,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2020-08-18 15:21:30,199 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 47 [2020-08-18 15:21:30,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:30,199 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2020-08-18 15:21:30,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:21:30,200 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2020-08-18 15:21:30,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 15:21:30,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:30,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:30,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:21:30,203 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:30,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:30,203 INFO L82 PathProgramCache]: Analyzing trace with hash -350015351, now seen corresponding path program 1 times [2020-08-18 15:21:30,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:30,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395375420] [2020-08-18 15:21:30,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:30,550 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:30,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:30,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:30,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:30,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:30,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:30,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:21:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:30,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:21:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:30,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:21:30,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395375420] [2020-08-18 15:21:30,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:30,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:21:30,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674557605] [2020-08-18 15:21:30,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:21:30,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:30,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:21:30,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:21:30,634 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 8 states. [2020-08-18 15:21:30,999 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:31,348 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:31,608 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:31,843 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:32,572 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:34,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:34,469 INFO L93 Difference]: Finished difference Result 427 states and 530 transitions. [2020-08-18 15:21:34,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:21:34,470 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 15:21:34,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:34,475 INFO L225 Difference]: With dead ends: 427 [2020-08-18 15:21:34,476 INFO L226 Difference]: Without dead ends: 326 [2020-08-18 15:21:34,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:21:34,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-18 15:21:34,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2020-08-18 15:21:34,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-18 15:21:34,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 324 transitions. [2020-08-18 15:21:34,565 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 324 transitions. Word has length 51 [2020-08-18 15:21:34,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:34,565 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 324 transitions. [2020-08-18 15:21:34,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:21:34,566 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 324 transitions. [2020-08-18 15:21:34,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 15:21:34,569 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:34,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:34,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:21:34,570 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:34,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:34,570 INFO L82 PathProgramCache]: Analyzing trace with hash -103520613, now seen corresponding path program 1 times [2020-08-18 15:21:34,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:34,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863501847] [2020-08-18 15:21:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:34,938 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:34,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:34,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:34,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:34,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:34,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:35,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:21:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:35,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:21:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:35,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 15:21:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:35,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:21:35,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863501847] [2020-08-18 15:21:35,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:35,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 15:21:35,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790366] [2020-08-18 15:21:35,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:21:35,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:35,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:21:35,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:21:35,045 INFO L87 Difference]: Start difference. First operand 268 states and 324 transitions. Second operand 12 states. [2020-08-18 15:21:35,512 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:35,831 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:36,103 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:36,408 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:36,960 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:37,879 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:38,272 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:38,649 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:38,905 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:21:39,212 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:39,601 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:39,961 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:40,329 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:42,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:42,015 INFO L93 Difference]: Finished difference Result 1081 states and 1492 transitions. [2020-08-18 15:21:42,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 15:21:42,016 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 15:21:42,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:42,026 INFO L225 Difference]: With dead ends: 1081 [2020-08-18 15:21:42,026 INFO L226 Difference]: Without dead ends: 837 [2020-08-18 15:21:42,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 15:21:42,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-08-18 15:21:42,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 744. [2020-08-18 15:21:42,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-08-18 15:21:42,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 950 transitions. [2020-08-18 15:21:42,264 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 950 transitions. Word has length 57 [2020-08-18 15:21:42,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:42,265 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 950 transitions. [2020-08-18 15:21:42,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:21:42,265 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 950 transitions. [2020-08-18 15:21:42,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 15:21:42,270 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:42,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:42,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:21:42,271 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:42,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:42,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1065334495, now seen corresponding path program 1 times [2020-08-18 15:21:42,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:42,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496340281] [2020-08-18 15:21:42,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,539 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:42,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:21:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:21:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:21:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 15:21:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:42,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:21:42,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496340281] [2020-08-18 15:21:42,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:42,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:21:42,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406104259] [2020-08-18 15:21:42,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:21:42,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:42,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:21:42,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:21:42,664 INFO L87 Difference]: Start difference. First operand 744 states and 950 transitions. Second operand 6 states. [2020-08-18 15:21:42,965 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:44,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:44,753 INFO L93 Difference]: Finished difference Result 1779 states and 2437 transitions. [2020-08-18 15:21:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 15:21:44,754 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 15:21:44,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:44,774 INFO L225 Difference]: With dead ends: 1779 [2020-08-18 15:21:44,774 INFO L226 Difference]: Without dead ends: 1059 [2020-08-18 15:21:44,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:21:44,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2020-08-18 15:21:45,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 972. [2020-08-18 15:21:45,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-08-18 15:21:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1232 transitions. [2020-08-18 15:21:45,013 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1232 transitions. Word has length 61 [2020-08-18 15:21:45,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:45,014 INFO L479 AbstractCegarLoop]: Abstraction has 972 states and 1232 transitions. [2020-08-18 15:21:45,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:21:45,014 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1232 transitions. [2020-08-18 15:21:45,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 15:21:45,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:45,018 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:45,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:21:45,018 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:45,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:45,019 INFO L82 PathProgramCache]: Analyzing trace with hash 380759586, now seen corresponding path program 1 times [2020-08-18 15:21:45,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:45,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084011077] [2020-08-18 15:21:45,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,350 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:45,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:21:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:21:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 15:21:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:21:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:21:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 15:21:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:45,502 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 15:21:45,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084011077] [2020-08-18 15:21:45,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:21:45,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 15:21:45,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307613408] [2020-08-18 15:21:45,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:21:45,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:45,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:21:45,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:21:45,505 INFO L87 Difference]: Start difference. First operand 972 states and 1232 transitions. Second operand 10 states. [2020-08-18 15:21:46,140 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 15:21:46,693 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:48,626 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:50,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:50,413 INFO L93 Difference]: Finished difference Result 1881 states and 2481 transitions. [2020-08-18 15:21:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 15:21:50,414 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 15:21:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:50,424 INFO L225 Difference]: With dead ends: 1881 [2020-08-18 15:21:50,424 INFO L226 Difference]: Without dead ends: 1176 [2020-08-18 15:21:50,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-18 15:21:50,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2020-08-18 15:21:50,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1079. [2020-08-18 15:21:50,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2020-08-18 15:21:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1343 transitions. [2020-08-18 15:21:50,721 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1343 transitions. Word has length 88 [2020-08-18 15:21:50,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:50,723 INFO L479 AbstractCegarLoop]: Abstraction has 1079 states and 1343 transitions. [2020-08-18 15:21:50,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:21:50,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1343 transitions. [2020-08-18 15:21:50,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 15:21:50,730 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:50,735 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:50,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:21:50,736 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:50,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:50,736 INFO L82 PathProgramCache]: Analyzing trace with hash 2024665879, now seen corresponding path program 1 times [2020-08-18 15:21:50,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:50,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783985649] [2020-08-18 15:21:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,038 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:51,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:21:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:21:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:21:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:21:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 15:21:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 15:21:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:21:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 15:21:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 15:21:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 15:21:51,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783985649] [2020-08-18 15:21:51,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:21:51,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 15:21:51,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828820529] [2020-08-18 15:21:51,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:21:51,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:51,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:21:51,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:21:51,229 INFO L87 Difference]: Start difference. First operand 1079 states and 1343 transitions. Second operand 9 states. [2020-08-18 15:21:52,151 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:52,372 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:52,633 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:53,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:53,759 INFO L93 Difference]: Finished difference Result 1991 states and 2604 transitions. [2020-08-18 15:21:53,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 15:21:53,760 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-08-18 15:21:53,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:53,768 INFO L225 Difference]: With dead ends: 1991 [2020-08-18 15:21:53,768 INFO L226 Difference]: Without dead ends: 1202 [2020-08-18 15:21:53,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:21:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2020-08-18 15:21:54,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1079. [2020-08-18 15:21:54,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2020-08-18 15:21:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1341 transitions. [2020-08-18 15:21:54,015 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1341 transitions. Word has length 132 [2020-08-18 15:21:54,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:54,016 INFO L479 AbstractCegarLoop]: Abstraction has 1079 states and 1341 transitions. [2020-08-18 15:21:54,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:21:54,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1341 transitions. [2020-08-18 15:21:54,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 15:21:54,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:54,021 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:54,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 15:21:54,021 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:54,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:54,022 INFO L82 PathProgramCache]: Analyzing trace with hash -2030061671, now seen corresponding path program 1 times [2020-08-18 15:21:54,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:54,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267145500] [2020-08-18 15:21:54,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,310 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:21:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:21:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:21:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:21:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 15:21:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 15:21:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:21:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 15:21:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 15:21:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 15:21:54,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267145500] [2020-08-18 15:21:54,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:21:54,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 15:21:54,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054522628] [2020-08-18 15:21:54,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:21:54,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:54,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:21:54,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:21:54,517 INFO L87 Difference]: Start difference. First operand 1079 states and 1341 transitions. Second operand 10 states. [2020-08-18 15:21:56,218 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:56,461 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:21:56,714 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:56,952 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:57,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:57,361 INFO L93 Difference]: Finished difference Result 2009 states and 2576 transitions. [2020-08-18 15:21:57,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 15:21:57,363 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-18 15:21:57,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:57,371 INFO L225 Difference]: With dead ends: 2009 [2020-08-18 15:21:57,371 INFO L226 Difference]: Without dead ends: 1226 [2020-08-18 15:21:57,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:21:57,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2020-08-18 15:21:57,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1115. [2020-08-18 15:21:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2020-08-18 15:21:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1389 transitions. [2020-08-18 15:21:57,621 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1389 transitions. Word has length 132 [2020-08-18 15:21:57,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:57,622 INFO L479 AbstractCegarLoop]: Abstraction has 1115 states and 1389 transitions. [2020-08-18 15:21:57,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:21:57,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1389 transitions. [2020-08-18 15:21:57,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 15:21:57,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:57,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:57,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 15:21:57,631 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:57,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:57,631 INFO L82 PathProgramCache]: Analyzing trace with hash 95790874, now seen corresponding path program 1 times [2020-08-18 15:21:57,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:57,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241701773] [2020-08-18 15:21:57,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:57,896 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:57,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:57,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:57,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:57,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:57,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:57,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:21:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:57,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:57,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:57,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:58,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:21:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:58,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:21:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:58,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:58,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 15:21:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:58,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 15:21:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:58,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:58,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:58,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:21:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:58,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 15:21:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:58,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 15:21:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:58,089 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 15:21:58,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241701773] [2020-08-18 15:21:58,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:21:58,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 15:21:58,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519265981] [2020-08-18 15:21:58,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:21:58,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:58,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:21:58,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:21:58,091 INFO L87 Difference]: Start difference. First operand 1115 states and 1389 transitions. Second operand 10 states. [2020-08-18 15:21:59,124 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:59,383 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:21:59,661 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:59,916 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:00,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:22:00,795 INFO L93 Difference]: Finished difference Result 2337 states and 3010 transitions. [2020-08-18 15:22:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:22:00,796 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2020-08-18 15:22:00,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:22:00,803 INFO L225 Difference]: With dead ends: 2337 [2020-08-18 15:22:00,803 INFO L226 Difference]: Without dead ends: 1246 [2020-08-18 15:22:00,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:22:00,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2020-08-18 15:22:01,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1135. [2020-08-18 15:22:01,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1135 states. [2020-08-18 15:22:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1411 transitions. [2020-08-18 15:22:01,059 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1411 transitions. Word has length 128 [2020-08-18 15:22:01,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:22:01,060 INFO L479 AbstractCegarLoop]: Abstraction has 1135 states and 1411 transitions. [2020-08-18 15:22:01,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:22:01,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1411 transitions. [2020-08-18 15:22:01,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 15:22:01,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:22:01,065 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:22:01,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 15:22:01,066 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:22:01,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:22:01,066 INFO L82 PathProgramCache]: Analyzing trace with hash 336030620, now seen corresponding path program 1 times [2020-08-18 15:22:01,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:22:01,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829150402] [2020-08-18 15:22:01,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:22:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,390 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:22:01,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:22:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:22:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:22:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:22:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:22:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:22:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 15:22:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 15:22:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:22:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 15:22:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 15:22:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 15:22:01,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829150402] [2020-08-18 15:22:01,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:22:01,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 15:22:01,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875752229] [2020-08-18 15:22:01,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:22:01,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:22:01,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:22:01,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:22:01,671 INFO L87 Difference]: Start difference. First operand 1135 states and 1411 transitions. Second operand 12 states. [2020-08-18 15:22:03,092 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:03,336 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:03,577 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:04,232 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:04,509 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:04,737 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:05,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:22:05,812 INFO L93 Difference]: Finished difference Result 2133 states and 2729 transitions. [2020-08-18 15:22:05,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 15:22:05,812 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-18 15:22:05,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:22:05,820 INFO L225 Difference]: With dead ends: 2133 [2020-08-18 15:22:05,820 INFO L226 Difference]: Without dead ends: 1022 [2020-08-18 15:22:05,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:22:05,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2020-08-18 15:22:06,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 966. [2020-08-18 15:22:06,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-08-18 15:22:06,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1168 transitions. [2020-08-18 15:22:06,011 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1168 transitions. Word has length 128 [2020-08-18 15:22:06,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:22:06,011 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1168 transitions. [2020-08-18 15:22:06,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:22:06,011 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1168 transitions. [2020-08-18 15:22:06,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 15:22:06,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:22:06,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:22:06,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 15:22:06,016 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:22:06,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:22:06,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1755432535, now seen corresponding path program 1 times [2020-08-18 15:22:06,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:22:06,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141302723] [2020-08-18 15:22:06,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:22:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,333 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:22:06,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:22:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:22:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:22:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:22:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:22:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:22:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:22:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 15:22:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 15:22:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:22:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 15:22:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 15:22:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,498 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 15:22:06,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141302723] [2020-08-18 15:22:06,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:22:06,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 15:22:06,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850445519] [2020-08-18 15:22:06,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:22:06,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:22:06,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:22:06,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:22:06,501 INFO L87 Difference]: Start difference. First operand 966 states and 1168 transitions. Second operand 10 states. [2020-08-18 15:22:07,071 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:08,622 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:08,863 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:09,091 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:09,338 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:09,589 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:09,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:22:09,925 INFO L93 Difference]: Finished difference Result 1043 states and 1286 transitions. [2020-08-18 15:22:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 15:22:09,925 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-18 15:22:09,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:22:09,931 INFO L225 Difference]: With dead ends: 1043 [2020-08-18 15:22:09,931 INFO L226 Difference]: Without dead ends: 1040 [2020-08-18 15:22:09,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 15:22:09,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2020-08-18 15:22:10,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 966. [2020-08-18 15:22:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-08-18 15:22:10,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1163 transitions. [2020-08-18 15:22:10,149 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1163 transitions. Word has length 132 [2020-08-18 15:22:10,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:22:10,150 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1163 transitions. [2020-08-18 15:22:10,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:22:10,150 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1163 transitions. [2020-08-18 15:22:10,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-18 15:22:10,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:22:10,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:22:10,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 15:22:10,157 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:22:10,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:22:10,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1244866615, now seen corresponding path program 1 times [2020-08-18 15:22:10,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:22:10,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103646042] [2020-08-18 15:22:10,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:22:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,497 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:22:10,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:22:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:22:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:22:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:22:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:22:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:22:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:22:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 15:22:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 15:22:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:22:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 15:22:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 15:22:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:10,676 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 15:22:10,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103646042] [2020-08-18 15:22:10,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:22:10,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 15:22:10,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537860053] [2020-08-18 15:22:10,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:22:10,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:22:10,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:22:10,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:22:10,683 INFO L87 Difference]: Start difference. First operand 966 states and 1163 transitions. Second operand 12 states. [2020-08-18 15:22:11,352 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:12,262 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:12,543 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:22:12,808 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:22:13,037 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:13,280 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:13,593 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:14,304 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:14,600 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:22:14,859 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:22:16,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:22:16,715 INFO L93 Difference]: Finished difference Result 2430 states and 3107 transitions. [2020-08-18 15:22:16,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 15:22:16,716 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-18 15:22:16,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:22:16,726 INFO L225 Difference]: With dead ends: 2430 [2020-08-18 15:22:16,726 INFO L226 Difference]: Without dead ends: 1643 [2020-08-18 15:22:16,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-18 15:22:16,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2020-08-18 15:22:17,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1461. [2020-08-18 15:22:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2020-08-18 15:22:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1788 transitions. [2020-08-18 15:22:17,059 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1788 transitions. Word has length 136 [2020-08-18 15:22:17,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:22:17,060 INFO L479 AbstractCegarLoop]: Abstraction has 1461 states and 1788 transitions. [2020-08-18 15:22:17,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:22:17,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1788 transitions. [2020-08-18 15:22:17,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-18 15:22:17,070 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:22:17,070 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:22:17,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 15:22:17,071 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:22:17,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:22:17,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1692744000, now seen corresponding path program 2 times [2020-08-18 15:22:17,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:22:17,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390126947] [2020-08-18 15:22:17,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:22:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,391 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:22:17,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:22:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:22:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:22:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:22:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:22:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:22:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:22:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 15:22:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:22:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:22:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 15:22:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-18 15:22:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:22:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-18 15:22:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-18 15:22:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-18 15:22:17,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390126947] [2020-08-18 15:22:17,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:22:17,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 15:22:17,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88863594] [2020-08-18 15:22:17,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 15:22:17,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:22:17,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 15:22:17,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:22:17,695 INFO L87 Difference]: Start difference. First operand 1461 states and 1788 transitions. Second operand 13 states. [2020-08-18 15:22:18,917 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:19,208 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186