/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:06:34,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:06:34,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:06:34,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:06:34,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:06:34,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:06:34,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:06:34,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:06:34,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:06:34,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:06:34,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:06:34,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:06:34,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:06:34,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:06:34,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:06:34,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:06:34,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:06:34,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:06:34,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:06:34,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:06:34,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:06:34,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:06:34,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:06:34,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:06:34,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:06:34,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:06:34,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:06:34,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:06:34,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:06:34,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:06:34,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:06:34,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:06:34,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:06:34,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:06:34,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:06:34,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:06:34,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:06:34,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:06:34,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:06:34,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:06:34,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:06:34,906 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 [2020-08-19 00:06:34,946 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:06:34,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:06:34,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:06:34,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:06:34,948 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:06:34,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:06:34,949 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:06:34,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:06:34,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:06:34,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:06:34,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:06:34,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:06:34,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:06:34,951 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:06:34,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:06:34,952 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:06:34,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:06:34,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:06:34,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:06:34,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:06:34,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:06:34,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:06:34,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:06:34,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:06:34,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:06:34,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:06:34,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:06:34,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:06:34,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:06:34,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:06:35,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:06:35,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:06:35,332 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:06:35,334 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:06:35,336 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:06:35,337 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-08-19 00:06:35,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e55360061/fb26bd12bda244f9a6a23044d93e37dc/FLAG7f81dc2c2 [2020-08-19 00:06:35,911 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:06:35,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-08-19 00:06:35,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e55360061/fb26bd12bda244f9a6a23044d93e37dc/FLAG7f81dc2c2 [2020-08-19 00:06:36,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e55360061/fb26bd12bda244f9a6a23044d93e37dc [2020-08-19 00:06:36,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:06:36,195 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:06:36,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:06:36,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:06:36,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:06:36,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:06:36" (1/1) ... [2020-08-19 00:06:36,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425b5723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:36, skipping insertion in model container [2020-08-19 00:06:36,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:06:36" (1/1) ... [2020-08-19 00:06:36,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:06:36,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:06:36,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:06:36,714 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:06:36,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:06:36,859 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:06:36,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:36 WrapperNode [2020-08-19 00:06:36,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:06:36,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:06:36,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:06:36,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:06:36,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:36" (1/1) ... [2020-08-19 00:06:36,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:36" (1/1) ... [2020-08-19 00:06:36,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:36" (1/1) ... [2020-08-19 00:06:36,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:36" (1/1) ... [2020-08-19 00:06:36,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:36" (1/1) ... [2020-08-19 00:06:36,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:36" (1/1) ... [2020-08-19 00:06:36,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:36" (1/1) ... [2020-08-19 00:06:36,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:06:36,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:06:36,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:06:36,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:06:36,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:36" (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 [2020-08-19 00:06:37,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:06:37,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:06:37,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:06:37,024 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:06:37,024 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:06:37,024 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:06:37,024 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:06:37,025 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:06:37,025 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:06:37,025 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:06:37,025 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:06:37,025 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 00:06:37,025 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:06:37,026 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:06:37,026 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:06:37,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:06:37,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:06:37,026 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:06:37,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:06:37,027 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:06:37,027 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:06:37,027 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:06:37,027 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:06:37,027 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:06:37,027 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:06:37,028 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:06:37,028 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:06:37,028 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:06:37,028 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:06:37,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:06:37,028 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:06:37,029 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:06:37,029 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:06:37,029 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:06:37,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:06:37,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:06:37,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:06:37,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:06:37,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:06:37,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:06:37,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:06:37,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:06:37,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:06:37,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:06:37,031 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:06:37,031 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:06:37,031 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:06:37,031 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:06:37,031 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:06:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:06:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:06:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:06:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:06:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:06:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:06:37,033 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:06:37,033 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:06:37,033 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:06:37,033 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:06:37,033 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:06:37,033 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:06:37,033 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:06:37,034 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:06:37,034 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:06:37,034 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:06:37,034 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:06:37,034 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:06:37,034 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:06:37,035 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:06:37,035 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:06:37,035 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 00:06:37,035 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:06:37,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:06:37,035 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:06:37,035 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:06:37,036 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:06:37,036 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:06:37,036 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:06:37,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:06:37,036 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:06:37,036 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:06:37,036 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:06:37,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:06:37,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:06:37,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:06:37,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:06:37,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:06:37,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:06:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:06:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:06:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:06:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:06:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:06:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:06:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:06:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:06:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:06:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:06:38,098 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:06:38,099 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:06:38,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:06:38 BoogieIcfgContainer [2020-08-19 00:06:38,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:06:38,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:06:38,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:06:38,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:06:38,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:06:36" (1/3) ... [2020-08-19 00:06:38,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b466047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:06:38, skipping insertion in model container [2020-08-19 00:06:38,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:36" (2/3) ... [2020-08-19 00:06:38,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b466047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:06:38, skipping insertion in model container [2020-08-19 00:06:38,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:06:38" (3/3) ... [2020-08-19 00:06:38,113 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2020-08-19 00:06:38,124 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:06:38,132 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:06:38,146 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:06:38,173 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:06:38,173 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:06:38,173 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:06:38,174 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:06:38,174 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:06:38,174 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:06:38,174 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:06:38,175 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:06:38,198 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-19 00:06:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 00:06:38,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:38,210 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] [2020-08-19 00:06:38,210 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:38,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:38,217 INFO L82 PathProgramCache]: Analyzing trace with hash 616057763, now seen corresponding path program 1 times [2020-08-19 00:06:38,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:38,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522171580] [2020-08-19 00:06:38,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:38,928 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:38,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:38,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:38,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:38,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:38,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:38,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:06:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:38,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:06:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:39,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:39,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522171580] [2020-08-19 00:06:39,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:39,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:06:39,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901810511] [2020-08-19 00:06:39,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:06:39,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:39,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:06:39,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:06:39,067 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2020-08-19 00:06:40,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:40,400 INFO L93 Difference]: Finished difference Result 343 states and 450 transitions. [2020-08-19 00:06:40,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:06:40,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 00:06:40,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:40,418 INFO L225 Difference]: With dead ends: 343 [2020-08-19 00:06:40,418 INFO L226 Difference]: Without dead ends: 185 [2020-08-19 00:06:40,423 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 [2020-08-19 00:06:40,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-19 00:06:40,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 149. [2020-08-19 00:06:40,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-19 00:06:40,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2020-08-19 00:06:40,525 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 46 [2020-08-19 00:06:40,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:40,525 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2020-08-19 00:06:40,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:06:40,526 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2020-08-19 00:06:40,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 00:06:40,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:40,530 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] [2020-08-19 00:06:40,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:06:40,530 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:40,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:40,531 INFO L82 PathProgramCache]: Analyzing trace with hash -2016430514, now seen corresponding path program 1 times [2020-08-19 00:06:40,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:40,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552877401] [2020-08-19 00:06:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:40,903 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:40,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:40,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:40,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:40,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:40,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:40,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:06:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:40,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:06:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:40,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552877401] [2020-08-19 00:06:40,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:40,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:06:40,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987087805] [2020-08-19 00:06:40,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:06:40,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:40,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:06:40,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:06:40,987 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand 4 states. [2020-08-19 00:06:41,426 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:42,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:42,407 INFO L93 Difference]: Finished difference Result 270 states and 333 transitions. [2020-08-19 00:06:42,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:06:42,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 00:06:42,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:42,412 INFO L225 Difference]: With dead ends: 270 [2020-08-19 00:06:42,412 INFO L226 Difference]: Without dead ends: 169 [2020-08-19 00:06:42,414 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 [2020-08-19 00:06:42,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-19 00:06:42,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 140. [2020-08-19 00:06:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-19 00:06:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 166 transitions. [2020-08-19 00:06:42,452 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 166 transitions. Word has length 47 [2020-08-19 00:06:42,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:42,453 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 166 transitions. [2020-08-19 00:06:42,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:06:42,453 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 166 transitions. [2020-08-19 00:06:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 00:06:42,455 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:42,456 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] [2020-08-19 00:06:42,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:06:42,456 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:42,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1603631393, now seen corresponding path program 1 times [2020-08-19 00:06:42,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:42,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509941032] [2020-08-19 00:06:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,830 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:42,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:06:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:06:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:42,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:42,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509941032] [2020-08-19 00:06:42,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:42,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:06:42,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894072797] [2020-08-19 00:06:42,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:06:42,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:42,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:06:42,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:06:42,946 INFO L87 Difference]: Start difference. First operand 140 states and 166 transitions. Second operand 8 states. [2020-08-19 00:06:43,323 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:43,642 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:43,899 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:44,115 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:44,848 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:46,884 INFO L93 Difference]: Finished difference Result 476 states and 596 transitions. [2020-08-19 00:06:46,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:06:46,886 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 00:06:46,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:46,894 INFO L225 Difference]: With dead ends: 476 [2020-08-19 00:06:46,894 INFO L226 Difference]: Without dead ends: 360 [2020-08-19 00:06:46,898 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 [2020-08-19 00:06:46,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-19 00:06:47,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 298. [2020-08-19 00:06:47,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-08-19 00:06:47,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 364 transitions. [2020-08-19 00:06:47,005 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 364 transitions. Word has length 51 [2020-08-19 00:06:47,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:47,005 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 364 transitions. [2020-08-19 00:06:47,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:06:47,006 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 364 transitions. [2020-08-19 00:06:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 00:06:47,008 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:47,009 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] [2020-08-19 00:06:47,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:06:47,009 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:47,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:47,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1180849517, now seen corresponding path program 1 times [2020-08-19 00:06:47,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:47,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778816324] [2020-08-19 00:06:47,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:47,297 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:47,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:47,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:47,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:47,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:47,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:47,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:06:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:47,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:06:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:47,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 00:06:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:47,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778816324] [2020-08-19 00:06:47,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:47,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:06:47,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964780490] [2020-08-19 00:06:47,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:06:47,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:47,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:06:47,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:06:47,387 INFO L87 Difference]: Start difference. First operand 298 states and 364 transitions. Second operand 8 states. [2020-08-19 00:06:47,738 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:48,599 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:49,062 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:49,369 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:49,651 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:50,240 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:51,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:51,333 INFO L93 Difference]: Finished difference Result 960 states and 1249 transitions. [2020-08-19 00:06:51,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:06:51,333 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 00:06:51,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:51,341 INFO L225 Difference]: With dead ends: 960 [2020-08-19 00:06:51,341 INFO L226 Difference]: Without dead ends: 686 [2020-08-19 00:06:51,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:06:51,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-08-19 00:06:51,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 551. [2020-08-19 00:06:51,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-08-19 00:06:51,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 678 transitions. [2020-08-19 00:06:51,467 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 678 transitions. Word has length 57 [2020-08-19 00:06:51,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:51,468 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 678 transitions. [2020-08-19 00:06:51,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:06:51,468 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 678 transitions. [2020-08-19 00:06:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 00:06:51,472 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:51,472 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] [2020-08-19 00:06:51,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:06:51,473 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:51,473 INFO L82 PathProgramCache]: Analyzing trace with hash -687352489, now seen corresponding path program 1 times [2020-08-19 00:06:51,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:51,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018716323] [2020-08-19 00:06:51,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:51,764 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:51,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:51,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:51,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:51,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:51,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:51,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:06:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:51,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:06:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:51,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:06:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:51,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:06:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:51,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018716323] [2020-08-19 00:06:51,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:51,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:06:51,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301616453] [2020-08-19 00:06:51,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:06:51,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:51,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:06:51,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:06:51,897 INFO L87 Difference]: Start difference. First operand 551 states and 678 transitions. Second operand 9 states. [2020-08-19 00:06:52,295 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:53,197 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:53,491 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:53,744 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:54,345 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:54,642 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:55,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:55,809 INFO L93 Difference]: Finished difference Result 1523 states and 2048 transitions. [2020-08-19 00:06:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 00:06:55,809 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-19 00:06:55,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:55,818 INFO L225 Difference]: With dead ends: 1523 [2020-08-19 00:06:55,818 INFO L226 Difference]: Without dead ends: 996 [2020-08-19 00:06:55,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:06:55,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2020-08-19 00:06:55,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 815. [2020-08-19 00:06:55,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-08-19 00:06:55,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1007 transitions. [2020-08-19 00:06:55,972 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1007 transitions. Word has length 61 [2020-08-19 00:06:55,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:55,973 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1007 transitions. [2020-08-19 00:06:55,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:06:55,973 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1007 transitions. [2020-08-19 00:06:55,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:06:55,975 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:55,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:06:55,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:06:55,976 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:55,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:55,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1185420344, now seen corresponding path program 1 times [2020-08-19 00:06:55,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:55,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374682610] [2020-08-19 00:06:55,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:56,210 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:56,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:56,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:56,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:56,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:56,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:56,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:06:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:56,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:06:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:56,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:56,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:56,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:56,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:06:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:56,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:06:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:56,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 00:06:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:56,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:06:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:56,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:56,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374682610] [2020-08-19 00:06:56,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:56,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:06:56,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475401229] [2020-08-19 00:06:56,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:06:56,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:56,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:06:56,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:06:56,366 INFO L87 Difference]: Start difference. First operand 815 states and 1007 transitions. Second operand 9 states. [2020-08-19 00:06:57,275 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:57,543 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:06:57,814 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:58,083 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:59,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:59,258 INFO L93 Difference]: Finished difference Result 1863 states and 2473 transitions. [2020-08-19 00:06:59,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:06:59,259 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-19 00:06:59,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:59,270 INFO L225 Difference]: With dead ends: 1863 [2020-08-19 00:06:59,270 INFO L226 Difference]: Without dead ends: 1072 [2020-08-19 00:06:59,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:06:59,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2020-08-19 00:06:59,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 841. [2020-08-19 00:06:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2020-08-19 00:06:59,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1035 transitions. [2020-08-19 00:06:59,501 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1035 transitions. Word has length 88 [2020-08-19 00:06:59,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:59,502 INFO L479 AbstractCegarLoop]: Abstraction has 841 states and 1035 transitions. [2020-08-19 00:06:59,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:06:59,503 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1035 transitions. [2020-08-19 00:06:59,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:06:59,508 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:59,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:06:59,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:06:59,509 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:59,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:59,510 INFO L82 PathProgramCache]: Analyzing trace with hash -910660730, now seen corresponding path program 1 times [2020-08-19 00:06:59,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:59,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124863837] [2020-08-19 00:06:59,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:59,824 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:59,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:59,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:59,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:59,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:59,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:59,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:06:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:59,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:06:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:59,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:59,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:59,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:59,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:06:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:59,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:06:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:59,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 00:06:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:59,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:06:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:06:59,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124863837] [2020-08-19 00:06:59,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:59,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 00:06:59,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493892010] [2020-08-19 00:06:59,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:06:59,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:59,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:06:59,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:06:59,980 INFO L87 Difference]: Start difference. First operand 841 states and 1035 transitions. Second operand 11 states. [2020-08-19 00:07:00,457 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:00,700 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:07:00,934 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:07:01,702 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:07:01,971 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:07:02,217 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:07:03,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:03,507 INFO L93 Difference]: Finished difference Result 1917 states and 2592 transitions. [2020-08-19 00:07:03,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:07:03,508 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-08-19 00:07:03,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:03,517 INFO L225 Difference]: With dead ends: 1917 [2020-08-19 00:07:03,517 INFO L226 Difference]: Without dead ends: 1100 [2020-08-19 00:07:03,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:07:03,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-08-19 00:07:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 857. [2020-08-19 00:07:03,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2020-08-19 00:07:03,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1051 transitions. [2020-08-19 00:07:03,656 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1051 transitions. Word has length 88 [2020-08-19 00:07:03,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:03,657 INFO L479 AbstractCegarLoop]: Abstraction has 857 states and 1051 transitions. [2020-08-19 00:07:03,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:07:03,657 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1051 transitions. [2020-08-19 00:07:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 00:07:03,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:03,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:03,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:07:03,659 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:03,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:03,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1039639525, now seen corresponding path program 1 times [2020-08-19 00:07:03,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:03,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561925615] [2020-08-19 00:07:03,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,899 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:07:03,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:07:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:07:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:07:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:07:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:07:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:07:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 00:07:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:07:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:07:04,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561925615] [2020-08-19 00:07:04,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:07:04,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:07:04,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092840198] [2020-08-19 00:07:04,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:07:04,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:07:04,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:07:04,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:07:04,042 INFO L87 Difference]: Start difference. First operand 857 states and 1051 transitions. Second operand 7 states. [2020-08-19 00:07:04,383 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:07:04,871 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:07:07,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:07,607 INFO L93 Difference]: Finished difference Result 2846 states and 3865 transitions. [2020-08-19 00:07:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:07:07,607 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-08-19 00:07:07,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:07,622 INFO L225 Difference]: With dead ends: 2846 [2020-08-19 00:07:07,622 INFO L226 Difference]: Without dead ends: 2013 [2020-08-19 00:07:07,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:07:07,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2020-08-19 00:07:07,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1711. [2020-08-19 00:07:07,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1711 states. [2020-08-19 00:07:07,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2117 transitions. [2020-08-19 00:07:07,994 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2117 transitions. Word has length 88 [2020-08-19 00:07:07,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:07,994 INFO L479 AbstractCegarLoop]: Abstraction has 1711 states and 2117 transitions. [2020-08-19 00:07:07,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:07:07,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2117 transitions. [2020-08-19 00:07:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 00:07:07,997 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:07,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:07,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:07:07,998 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:07,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:07,998 INFO L82 PathProgramCache]: Analyzing trace with hash 745790239, now seen corresponding path program 1 times [2020-08-19 00:07:07,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:07,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348400167] [2020-08-19 00:07:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:07:08,066 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:07:08,066 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:07:08,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:07:08,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:07:08 BoogieIcfgContainer [2020-08-19 00:07:08,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:07:08,108 INFO L168 Benchmark]: Toolchain (without parser) took 31913.95 ms. Allocated memory was 143.7 MB in the beginning and 628.6 MB in the end (delta: 485.0 MB). Free memory was 105.5 MB in the beginning and 192.3 MB in the end (delta: -86.9 MB). Peak memory consumption was 398.1 MB. Max. memory is 7.1 GB. [2020-08-19 00:07:08,109 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 143.7 MB. Free memory was 125.2 MB in the beginning and 124.8 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. [2020-08-19 00:07:08,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.43 ms. Allocated memory was 143.7 MB in the beginning and 206.6 MB in the end (delta: 62.9 MB). Free memory was 105.5 MB in the beginning and 175.7 MB in the end (delta: -70.2 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-08-19 00:07:08,122 INFO L168 Benchmark]: Boogie Preprocessor took 98.51 ms. Allocated memory is still 206.6 MB. Free memory was 175.7 MB in the beginning and 171.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-19 00:07:08,124 INFO L168 Benchmark]: RCFGBuilder took 1144.96 ms. Allocated memory was 206.6 MB in the beginning and 231.7 MB in the end (delta: 25.2 MB). Free memory was 171.1 MB in the beginning and 184.0 MB in the end (delta: -12.9 MB). Peak memory consumption was 76.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:07:08,124 INFO L168 Benchmark]: TraceAbstraction took 30000.98 ms. Allocated memory was 231.7 MB in the beginning and 628.6 MB in the end (delta: 396.9 MB). Free memory was 184.0 MB in the beginning and 192.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 388.6 MB. Max. memory is 7.1 GB. [2020-08-19 00:07:08,132 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 143.7 MB. Free memory was 125.2 MB in the beginning and 124.8 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 664.43 ms. Allocated memory was 143.7 MB in the beginning and 206.6 MB in the end (delta: 62.9 MB). Free memory was 105.5 MB in the beginning and 175.7 MB in the end (delta: -70.2 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.51 ms. Allocated memory is still 206.6 MB. Free memory was 175.7 MB in the beginning and 171.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1144.96 ms. Allocated memory was 206.6 MB in the beginning and 231.7 MB in the end (delta: 25.2 MB). Free memory was 171.1 MB in the beginning and 184.0 MB in the end (delta: -12.9 MB). Peak memory consumption was 76.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30000.98 ms. Allocated memory was 231.7 MB in the beginning and 628.6 MB in the end (delta: 396.9 MB). Free memory was 184.0 MB in the beginning and 192.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 388.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 506]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L159] int pumpRunning = 0; [L160] int systemActive = 1; [L399] int waterLevel = 1; [L400] int methaneLevelCritical = 0; [L511] int cleanupTimeShifts = 4; [L802] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L584] int retValue_acc ; [L585] int tmp ; [L589] FCALL select_helpers() [L590] FCALL select_features() [L591] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L591] RET, EXPR valid_product() [L591] tmp = valid_product() [L593] COND TRUE \read(tmp) [L595] FCALL setup() [L596] CALL runTest() [L578] CALL test() [L84] int splverifierCounter ; [L85] int tmp ; [L86] int tmp___0 ; [L87] int tmp___1 ; [L88] int tmp___2 ; [L91] splverifierCounter = 0 [L93] COND TRUE 1 [L95] COND TRUE splverifierCounter < 4 [L101] tmp = __VERIFIER_nondet_int() [L103] COND TRUE \read(tmp) [L105] CALL waterRise() [L417] COND TRUE waterLevel < 2 [L418] waterLevel = waterLevel + 1 [L105] RET waterRise() [L111] tmp___0 = __VERIFIER_nondet_int() [L113] COND TRUE \read(tmp___0) [L115] CALL changeMethaneLevel() [L429] COND FALSE !(\read(methaneLevelCritical)) [L432] methaneLevelCritical = 1 [L115] RET changeMethaneLevel() [L121] tmp___2 = __VERIFIER_nondet_int() [L123] COND TRUE \read(tmp___2) [L138] CALL timeShift() [L167] COND FALSE !(\read(pumpRunning)) [L174] COND TRUE \read(systemActive) [L176] CALL processEnvironment() [L248] int tmp ; [L251] COND FALSE !(\read(pumpRunning)) [L266] CALL processEnvironment__wrappee__lowWaterSensor() [L222] int tmp ; [L225] COND FALSE !(\read(pumpRunning)) [L240] CALL processEnvironment__wrappee__highWaterSensor() [L196] int tmp ; [L199] COND TRUE ! pumpRunning [L201] CALL, EXPR isHighWaterLevel() [L345] int retValue_acc ; [L346] int tmp ; [L347] int tmp___0 ; [L351] CALL, EXPR isHighWaterSensorDry() [L479] int retValue_acc ; [L482] COND FALSE !(waterLevel < 2) [L486] retValue_acc = 0 [L487] return (retValue_acc); [L351] RET, EXPR isHighWaterSensorDry() [L351] tmp = isHighWaterSensorDry() [L353] COND FALSE !(\read(tmp)) [L356] tmp___0 = 1 [L358] retValue_acc = tmp___0 [L359] return (retValue_acc); [L201] RET, EXPR isHighWaterLevel() [L201] tmp = isHighWaterLevel() [L203] COND TRUE \read(tmp) [L205] CALL activatePump() [L276] pumpRunning = 1 [L205] RET activatePump() [L240] RET processEnvironment__wrappee__highWaterSensor() [L266] RET processEnvironment__wrappee__lowWaterSensor() [L176] RET processEnvironment() [L182] CALL __utac_acc__Specification1_spec__1() [L608] int tmp ; [L609] int tmp___0 ; [L613] CALL, EXPR isMethaneLevelCritical() [L438] int retValue_acc ; [L441] retValue_acc = methaneLevelCritical [L442] return (retValue_acc); [L613] RET, EXPR isMethaneLevelCritical() [L613] tmp = isMethaneLevelCritical() [L615] COND TRUE \read(tmp) [L617] CALL, EXPR isPumpRunning() [L300] int retValue_acc ; [L303] retValue_acc = pumpRunning [L304] return (retValue_acc); [L617] RET, EXPR isPumpRunning() [L617] tmp___0 = isPumpRunning() [L619] COND TRUE \read(tmp___0) [L621] CALL __automaton_fail() [L506] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 251 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 24.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1100 SDtfs, 1942 SDslu, 1144 SDs, 0 SdLazy, 5846 SolverSat, 1209 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 277 GetRequests, 186 SyntacticMatches, 5 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1711occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1219 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 618 NumberOfCodeBlocks, 618 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 518 ConstructedInterpolants, 0 QuantifiedInterpolants, 157644 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...