/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:04:07,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:04:07,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:04:08,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:04:08,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:04:08,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:04:08,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:04:08,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:04:08,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:04:08,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:04:08,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:04:08,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:04:08,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:04:08,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:04:08,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:04:08,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:04:08,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:04:08,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:04:08,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:04:08,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:04:08,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:04:08,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:04:08,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:04:08,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:04:08,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:04:08,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:04:08,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:04:08,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:04:08,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:04:08,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:04:08,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:04:08,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:04:08,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:04:08,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:04:08,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:04:08,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:04:08,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:04:08,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:04:08,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:04:08,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:04:08,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:04:08,080 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 [2020-08-22 02:04:08,107 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:04:08,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:04:08,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:04:08,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:04:08,109 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:04:08,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:04:08,110 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:04:08,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:04:08,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:04:08,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:04:08,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:04:08,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:04:08,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:04:08,111 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:04:08,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:04:08,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:04:08,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:04:08,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:04:08,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:04:08,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:04:08,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:04:08,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:04:08,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:04:08,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:04:08,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:04:08,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:04:08,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:04:08,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:04:08,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:04:08,114 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:04:08,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:04:08,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:04:08,483 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:04:08,486 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:04:08,487 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:04:08,488 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2020-08-22 02:04:08,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f073dfa1c/ad0876c9da8746568df6f86119c8d8fd/FLAG19b1e0620 [2020-08-22 02:04:09,115 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:04:09,118 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2020-08-22 02:04:09,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f073dfa1c/ad0876c9da8746568df6f86119c8d8fd/FLAG19b1e0620 [2020-08-22 02:04:09,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f073dfa1c/ad0876c9da8746568df6f86119c8d8fd [2020-08-22 02:04:09,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:04:09,408 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:04:09,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:04:09,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:04:09,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:04:09,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:04:09" (1/1) ... [2020-08-22 02:04:09,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:09, skipping insertion in model container [2020-08-22 02:04:09,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:04:09" (1/1) ... [2020-08-22 02:04:09,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:04:09,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:04:09,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:04:10,007 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:04:10,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:04:10,119 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:04:10,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:10 WrapperNode [2020-08-22 02:04:10,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:04:10,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:04:10,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:04:10,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:04:10,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:10" (1/1) ... [2020-08-22 02:04:10,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:10" (1/1) ... [2020-08-22 02:04:10,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:10" (1/1) ... [2020-08-22 02:04:10,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:10" (1/1) ... [2020-08-22 02:04:10,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:10" (1/1) ... [2020-08-22 02:04:10,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:10" (1/1) ... [2020-08-22 02:04:10,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:10" (1/1) ... [2020-08-22 02:04:10,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:04:10,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:04:10,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:04:10,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:04:10,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:10" (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 [2020-08-22 02:04:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:04:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:04:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:04:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:04:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:04:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:04:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:04:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:04:10,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:04:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:04:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:04:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:04:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:04:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:04:10,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:04:10,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:04:10,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:04:10,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:04:10,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:04:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:04:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:04:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:04:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 02:04:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:04:10,297 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 02:04:10,299 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:04:10,299 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:04:10,299 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:04:10,299 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:04:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:04:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:04:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:04:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:04:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:04:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:04:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:04:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:04:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:04:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:04:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 02:04:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:04:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:04:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:04:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:04:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:04:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:04:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:04:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:04:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:04:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:04:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:04:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:04:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:04:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:04:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:04:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:04:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:04:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:04:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:04:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:04:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:04:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:04:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:04:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:04:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:04:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:04:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:04:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:04:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:04:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:04:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:04:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:04:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:04:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:04:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:04:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:04:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:04:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:04:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:04:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:04:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:04:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:04:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:04:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 02:04:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:04:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:04:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:04:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 02:04:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:04:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 02:04:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:04:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:04:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:04:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:04:11,409 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:04:11,409 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:04:11,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:04:11 BoogieIcfgContainer [2020-08-22 02:04:11,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:04:11,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:04:11,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:04:11,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:04:11,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:04:09" (1/3) ... [2020-08-22 02:04:11,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7482a4ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:04:11, skipping insertion in model container [2020-08-22 02:04:11,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:10" (2/3) ... [2020-08-22 02:04:11,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7482a4ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:04:11, skipping insertion in model container [2020-08-22 02:04:11,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:04:11" (3/3) ... [2020-08-22 02:04:11,424 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product47.cil.c [2020-08-22 02:04:11,435 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:04:11,443 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:04:11,458 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:04:11,485 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:04:11,485 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:04:11,485 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:04:11,485 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:04:11,486 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:04:11,486 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:04:11,486 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:04:11,486 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:04:11,516 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2020-08-22 02:04:11,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 02:04:11,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:04:11,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:04:11,534 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:04:11,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:04:11,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1671120280, now seen corresponding path program 1 times [2020-08-22 02:04:11,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:04:11,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197797270] [2020-08-22 02:04:11,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:04:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:12,263 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:04:12,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:04:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:12,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:04:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:12,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:04:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:12,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:04:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:12,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:04:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:12,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:04:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:12,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:04:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:12,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:04:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:04:12,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197797270] [2020-08-22 02:04:12,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:04:12,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:04:12,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215813868] [2020-08-22 02:04:12,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:04:12,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:04:12,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:04:12,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:04:12,399 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 3 states. [2020-08-22 02:04:13,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:04:13,682 INFO L93 Difference]: Finished difference Result 329 states and 431 transitions. [2020-08-22 02:04:13,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:04:13,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 02:04:13,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:04:13,700 INFO L225 Difference]: With dead ends: 329 [2020-08-22 02:04:13,700 INFO L226 Difference]: Without dead ends: 178 [2020-08-22 02:04:13,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:04:13,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-22 02:04:13,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 142. [2020-08-22 02:04:13,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-08-22 02:04:13,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 169 transitions. [2020-08-22 02:04:13,825 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 169 transitions. Word has length 52 [2020-08-22 02:04:13,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:04:13,826 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 169 transitions. [2020-08-22 02:04:13,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:04:13,826 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 169 transitions. [2020-08-22 02:04:13,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 02:04:13,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:04:13,831 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] [2020-08-22 02:04:13,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:04:13,831 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:04:13,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:04:13,832 INFO L82 PathProgramCache]: Analyzing trace with hash -374509178, now seen corresponding path program 1 times [2020-08-22 02:04:13,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:04:13,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025924126] [2020-08-22 02:04:13,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:04:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:14,130 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:04:14,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:04:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:14,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:04:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:14,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:04:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:14,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:04:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:14,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:04:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:14,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:04:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:14,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:04:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:14,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:04:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:14,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:04:14,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025924126] [2020-08-22 02:04:14,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:04:14,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:04:14,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424808545] [2020-08-22 02:04:14,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:04:14,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:04:14,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:04:14,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:04:14,180 INFO L87 Difference]: Start difference. First operand 142 states and 169 transitions. Second operand 4 states. [2020-08-22 02:04:14,580 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:04:15,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:04:15,493 INFO L93 Difference]: Finished difference Result 256 states and 314 transitions. [2020-08-22 02:04:15,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:04:15,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 02:04:15,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:04:15,498 INFO L225 Difference]: With dead ends: 256 [2020-08-22 02:04:15,498 INFO L226 Difference]: Without dead ends: 162 [2020-08-22 02:04:15,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:04:15,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-22 02:04:15,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 133. [2020-08-22 02:04:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-22 02:04:15,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2020-08-22 02:04:15,536 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 53 [2020-08-22 02:04:15,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:04:15,537 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2020-08-22 02:04:15,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:04:15,537 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2020-08-22 02:04:15,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 02:04:15,540 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:04:15,540 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] [2020-08-22 02:04:15,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:04:15,540 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:04:15,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:04:15,541 INFO L82 PathProgramCache]: Analyzing trace with hash 299348801, now seen corresponding path program 1 times [2020-08-22 02:04:15,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:04:15,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345324741] [2020-08-22 02:04:15,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:04:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:15,873 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:04:15,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:04:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:15,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:04:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:15,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:04:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:15,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:04:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:15,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:04:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:15,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:04:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:15,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:04:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:15,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 02:04:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:04:15,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345324741] [2020-08-22 02:04:15,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:04:15,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:04:15,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358665177] [2020-08-22 02:04:15,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:04:15,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:04:15,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:04:15,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:04:15,996 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand 8 states. [2020-08-22 02:04:16,357 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:04:16,684 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:04:16,915 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:04:17,144 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:04:17,845 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:04:19,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:04:19,841 INFO L93 Difference]: Finished difference Result 461 states and 574 transitions. [2020-08-22 02:04:19,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:04:19,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 02:04:19,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:04:19,847 INFO L225 Difference]: With dead ends: 461 [2020-08-22 02:04:19,848 INFO L226 Difference]: Without dead ends: 352 [2020-08-22 02:04:19,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 02:04:19,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-08-22 02:04:19,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 290. [2020-08-22 02:04:19,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-22 02:04:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 353 transitions. [2020-08-22 02:04:19,927 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 353 transitions. Word has length 57 [2020-08-22 02:04:19,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:04:19,928 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 353 transitions. [2020-08-22 02:04:19,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:04:19,928 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 353 transitions. [2020-08-22 02:04:19,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 02:04:19,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:04:19,931 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] [2020-08-22 02:04:19,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:04:19,932 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:04:19,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:04:19,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1748947784, now seen corresponding path program 1 times [2020-08-22 02:04:19,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:04:19,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849271940] [2020-08-22 02:04:19,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:04:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:20,234 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:04:20,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:04:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:20,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:04:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:20,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:04:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:20,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:04:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:20,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:04:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:20,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:04:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:20,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:04:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:20,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 02:04:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:20,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 02:04:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:04:20,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849271940] [2020-08-22 02:04:20,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:04:20,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:04:20,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686751108] [2020-08-22 02:04:20,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:04:20,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:04:20,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:04:20,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:04:20,366 INFO L87 Difference]: Start difference. First operand 290 states and 353 transitions. Second operand 8 states. [2020-08-22 02:04:20,726 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:04:22,095 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:04:22,454 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:04:22,742 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:04:22,983 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:04:23,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:04:23,851 INFO L93 Difference]: Finished difference Result 898 states and 1181 transitions. [2020-08-22 02:04:23,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 02:04:23,853 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-22 02:04:23,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:04:23,860 INFO L225 Difference]: With dead ends: 898 [2020-08-22 02:04:23,860 INFO L226 Difference]: Without dead ends: 632 [2020-08-22 02:04:23,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:04:23,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2020-08-22 02:04:24,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 561. [2020-08-22 02:04:24,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-08-22 02:04:24,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 695 transitions. [2020-08-22 02:04:24,030 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 695 transitions. Word has length 63 [2020-08-22 02:04:24,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:04:24,030 INFO L479 AbstractCegarLoop]: Abstraction has 561 states and 695 transitions. [2020-08-22 02:04:24,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:04:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 695 transitions. [2020-08-22 02:04:24,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 02:04:24,035 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:04:24,035 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] [2020-08-22 02:04:24,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:04:24,035 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:04:24,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:04:24,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1730478350, now seen corresponding path program 1 times [2020-08-22 02:04:24,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:04:24,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058827501] [2020-08-22 02:04:24,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:04:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:24,283 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:04:24,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:04:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:24,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:04:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:24,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:04:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:24,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:04:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:24,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:04:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:24,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:04:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:24,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:04:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:24,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:04:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:24,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:04:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:24,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 02:04:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:04:24,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058827501] [2020-08-22 02:04:24,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:04:24,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 02:04:24,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115036320] [2020-08-22 02:04:24,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 02:04:24,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:04:24,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 02:04:24,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 02:04:24,378 INFO L87 Difference]: Start difference. First operand 561 states and 695 transitions. Second operand 6 states. [2020-08-22 02:04:24,682 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:04:26,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:04:26,376 INFO L93 Difference]: Finished difference Result 1358 states and 1768 transitions. [2020-08-22 02:04:26,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 02:04:26,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-22 02:04:26,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:04:26,387 INFO L225 Difference]: With dead ends: 1358 [2020-08-22 02:04:26,388 INFO L226 Difference]: Without dead ends: 821 [2020-08-22 02:04:26,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:04:26,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-08-22 02:04:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 751. [2020-08-22 02:04:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-08-22 02:04:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 914 transitions. [2020-08-22 02:04:26,527 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 914 transitions. Word has length 67 [2020-08-22 02:04:26,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:04:26,527 INFO L479 AbstractCegarLoop]: Abstraction has 751 states and 914 transitions. [2020-08-22 02:04:26,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 02:04:26,528 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 914 transitions. [2020-08-22 02:04:26,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 02:04:26,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:04:26,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:04:26,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:04:26,530 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:04:26,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:04:26,531 INFO L82 PathProgramCache]: Analyzing trace with hash -145060242, now seen corresponding path program 1 times [2020-08-22 02:04:26,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:04:26,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319508656] [2020-08-22 02:04:26,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:04:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:04:26,592 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:04:26,592 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:04:26,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:04:26,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:04:26 BoogieIcfgContainer [2020-08-22 02:04:26,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:04:26,623 INFO L168 Benchmark]: Toolchain (without parser) took 17214.88 ms. Allocated memory was 141.0 MB in the beginning and 523.8 MB in the end (delta: 382.7 MB). Free memory was 102.8 MB in the beginning and 116.6 MB in the end (delta: -13.8 MB). Peak memory consumption was 368.9 MB. Max. memory is 7.1 GB. [2020-08-22 02:04:26,624 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 02:04:26,625 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.16 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 170.0 MB in the end (delta: -67.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:04:26,626 INFO L168 Benchmark]: Boogie Preprocessor took 87.87 ms. Allocated memory is still 203.9 MB. Free memory was 170.0 MB in the beginning and 165.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:04:26,627 INFO L168 Benchmark]: RCFGBuilder took 1206.17 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 165.5 MB in the beginning and 187.8 MB in the end (delta: -22.3 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:04:26,628 INFO L168 Benchmark]: TraceAbstraction took 15204.78 ms. Allocated memory was 234.9 MB in the beginning and 523.8 MB in the end (delta: 288.9 MB). Free memory was 187.8 MB in the beginning and 116.6 MB in the end (delta: 71.1 MB). Peak memory consumption was 360.0 MB. Max. memory is 7.1 GB. [2020-08-22 02:04:26,632 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 711.16 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 170.0 MB in the end (delta: -67.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.87 ms. Allocated memory is still 203.9 MB. Free memory was 170.0 MB in the beginning and 165.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1206.17 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 165.5 MB in the beginning and 187.8 MB in the end (delta: -22.3 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15204.78 ms. Allocated memory was 234.9 MB in the beginning and 523.8 MB in the end (delta: 288.9 MB). Free memory was 187.8 MB in the beginning and 116.6 MB in the end (delta: 71.1 MB). Peak memory consumption was 360.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L49] int cleanupTimeShifts = 4; [L357] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L629] int pumpRunning = 0; [L630] int systemActive = 1; [L841] int waterLevel = 1; [L842] int methaneLevelCritical = 0; [L130] int retValue_acc ; [L131] int tmp ; [L135] FCALL select_helpers() [L136] FCALL select_features() [L137] CALL, EXPR valid_product() [L179] int retValue_acc ; [L182] retValue_acc = 1 [L183] return (retValue_acc); [L137] RET, EXPR valid_product() [L137] tmp = valid_product() [L139] COND TRUE \read(tmp) [L141] FCALL setup() [L142] CALL runTest() [L121] CALL test() [L556] int splverifierCounter ; [L557] int tmp ; [L558] int tmp___0 ; [L559] int tmp___1 ; [L560] int tmp___2 ; [L563] splverifierCounter = 0 [L565] COND TRUE 1 [L567] COND TRUE splverifierCounter < 4 [L573] tmp = __VERIFIER_nondet_int() [L575] COND TRUE \read(tmp) [L577] CALL waterRise() [L859] COND TRUE waterLevel < 2 [L860] waterLevel = waterLevel + 1 [L577] RET waterRise() [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND FALSE !(\read(tmp___2)) [L599] tmp___1 = __VERIFIER_nondet_int() [L601] COND TRUE \read(tmp___1) [L603] CALL stopSystem() [L828] COND FALSE !(\read(pumpRunning)) [L835] systemActive = 0 [L603] RET stopSystem() [L610] CALL timeShift() [L637] COND FALSE !(\read(pumpRunning)) [L644] COND FALSE !(\read(systemActive)) [L652] CALL __utac_acc__Specification3_spec__1() [L936] int tmp ; [L937] int tmp___0 ; [L938] int tmp___1 ; [L942] CALL, EXPR isMethaneLevelCritical() [L880] int retValue_acc ; [L883] retValue_acc = methaneLevelCritical [L884] return (retValue_acc); [L942] RET, EXPR isMethaneLevelCritical() [L942] tmp = isMethaneLevelCritical() [L944] COND FALSE !(\read(tmp)) [L948] CALL, EXPR getWaterLevel() [L912] int retValue_acc ; [L915] retValue_acc = waterLevel [L916] return (retValue_acc); [L948] RET, EXPR getWaterLevel() [L948] tmp___0 = getWaterLevel() [L950] COND TRUE tmp___0 == 2 [L952] CALL, EXPR isPumpRunning() [L761] int retValue_acc ; [L764] retValue_acc = pumpRunning [L765] return (retValue_acc); [L952] RET, EXPR isPumpRunning() [L952] tmp___1 = isPumpRunning() [L954] COND FALSE !(\read(tmp___1)) [L958] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 241 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 655 SDtfs, 1067 SDslu, 450 SDs, 0 SdLazy, 2484 SolverSat, 664 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=751occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 268 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 82182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...