/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=0.2 --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_spec1_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:44:52,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:44:52,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:44:52,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:44:52,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:44:52,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:44:52,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:44:52,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:44:52,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:44:52,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:44:52,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:44:52,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:44:52,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:44:52,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:44:52,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:44:52,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:44:52,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:44:52,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:44:52,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:44:52,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:44:52,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:44:52,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:44:52,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:44:52,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:44:52,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:44:52,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:44:52,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:44:52,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:44:52,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:44:52,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:44:52,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:44:52,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:44:52,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:44:52,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:44:52,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:44:52,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:44:52,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:44:52,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:44:52,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:44:52,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:44:52,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:44:52,392 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 [2020-08-21 22:44:52,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:44:52,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:44:52,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:44:52,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:44:52,417 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:44:52,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:44:52,417 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:44:52,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:44:52,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:44:52,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:44:52,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:44:52,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:44:52,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:44:52,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:44:52,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:44:52,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:44:52,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:44:52,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:44:52,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:44:52,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:44:52,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:44:52,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:44:52,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:44:52,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:44:52,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:44:52,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:44:52,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:44:52,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:44:52,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:44:52,422 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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-08-21 22:44:52,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:44:52,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:44:52,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:44:52,800 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:44:52,802 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:44:52,802 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-08-21 22:44:52,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa8e8225c/6439c254dab74b43ae59388b90bd6068/FLAG22bd9edb8 [2020-08-21 22:44:53,342 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:44:53,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-08-21 22:44:53,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa8e8225c/6439c254dab74b43ae59388b90bd6068/FLAG22bd9edb8 [2020-08-21 22:44:53,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa8e8225c/6439c254dab74b43ae59388b90bd6068 [2020-08-21 22:44:53,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:44:53,673 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:44:53,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:44:53,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:44:53,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:44:53,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:44:53" (1/1) ... [2020-08-21 22:44:53,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750e1b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:53, skipping insertion in model container [2020-08-21 22:44:53,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:44:53" (1/1) ... [2020-08-21 22:44:53,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:44:53,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:44:54,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:44:54,141 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:44:54,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:44:54,282 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:44:54,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:54 WrapperNode [2020-08-21 22:44:54,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:44:54,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:44:54,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:44:54,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:44:54,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:54" (1/1) ... [2020-08-21 22:44:54,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:54" (1/1) ... [2020-08-21 22:44:54,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:54" (1/1) ... [2020-08-21 22:44:54,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:54" (1/1) ... [2020-08-21 22:44:54,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:54" (1/1) ... [2020-08-21 22:44:54,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:54" (1/1) ... [2020-08-21 22:44:54,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:54" (1/1) ... [2020-08-21 22:44:54,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:44:54,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:44:54,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:44:54,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:44:54,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:54" (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 [2020-08-21 22:44:54,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:44:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:44:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:44:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:44:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:44:54,502 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:44:54,502 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:44:54,502 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:44:54,502 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:44:54,503 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:44:54,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:44:54,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 22:44:54,504 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:44:54,504 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:44:54,504 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:44:54,505 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:44:54,505 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:44:54,505 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:44:54,505 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:44:54,505 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:44:54,505 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:44:54,506 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:44:54,506 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 22:44:54,506 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:44:54,506 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:44:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:44:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:44:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:44:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:44:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:44:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:44:54,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:44:54,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:44:54,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:44:54,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:44:54,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:44:54,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:44:54,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:44:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:44:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:44:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:44:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:44:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:44:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:44:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:44:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:44:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:44:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:44:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:44:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:44:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:44:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 22:44:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 22:44:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:44:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:44:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:44:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:44:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:44:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:44:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:44:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:44:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:44:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:44:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:44:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:44:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:44:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:44:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:44:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:44:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:44:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:44:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:44:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:44:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:44:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:44:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:44:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:44:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:44:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:44:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:44:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:44:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:44:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:44:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:44:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:44:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:44:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:44:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:44:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:44:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:44:55,647 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:44:55,647 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:44:55,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:44:55 BoogieIcfgContainer [2020-08-21 22:44:55,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:44:55,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:44:55,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:44:55,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:44:55,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:44:53" (1/3) ... [2020-08-21 22:44:55,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba60e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:44:55, skipping insertion in model container [2020-08-21 22:44:55,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:44:54" (2/3) ... [2020-08-21 22:44:55,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba60e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:44:55, skipping insertion in model container [2020-08-21 22:44:55,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:44:55" (3/3) ... [2020-08-21 22:44:55,662 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product35.cil.c [2020-08-21 22:44:55,673 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:44:55,683 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:44:55,698 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:44:55,731 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:44:55,731 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:44:55,732 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:44:55,732 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:44:55,732 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:44:55,732 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:44:55,732 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:44:55,733 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:44:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-21 22:44:55,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 22:44:55,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:44:55,776 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] [2020-08-21 22:44:55,776 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:44:55,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:44:55,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1896668179, now seen corresponding path program 1 times [2020-08-21 22:44:55,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:44:55,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078892787] [2020-08-21 22:44:55,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:44:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:56,433 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:44:56,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:44:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:56,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:44:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:56,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:44:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:56,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:44:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:56,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:44:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:56,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:44:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:56,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:44:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:44:56,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078892787] [2020-08-21 22:44:56,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:44:56,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:44:56,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389487811] [2020-08-21 22:44:56,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:44:56,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:44:56,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:44:56,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:44:56,543 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-08-21 22:44:57,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:44:57,679 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2020-08-21 22:44:57,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:44:57,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 22:44:57,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:44:57,696 INFO L225 Difference]: With dead ends: 269 [2020-08-21 22:44:57,697 INFO L226 Difference]: Without dead ends: 146 [2020-08-21 22:44:57,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:44:57,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-21 22:44:57,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 114. [2020-08-21 22:44:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-21 22:44:57,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-21 22:44:57,783 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 46 [2020-08-21 22:44:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:44:57,784 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-21 22:44:57,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:44:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-21 22:44:57,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 22:44:57,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:44:57,788 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] [2020-08-21 22:44:57,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:44:57,789 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:44:57,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:44:57,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1220507007, now seen corresponding path program 1 times [2020-08-21 22:44:57,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:44:57,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339087143] [2020-08-21 22:44:57,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:44:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:58,160 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:44:58,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:44:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:58,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:44:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:58,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:44:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:58,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:44:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:58,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:44:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:58,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:44:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:58,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:44:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:44:58,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339087143] [2020-08-21 22:44:58,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:44:58,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:44:58,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777147209] [2020-08-21 22:44:58,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:44:58,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:44:58,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:44:58,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:44:58,204 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 4 states. [2020-08-21 22:44:58,615 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:44:59,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:44:59,292 INFO L93 Difference]: Finished difference Result 193 states and 235 transitions. [2020-08-21 22:44:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:44:59,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 22:44:59,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:44:59,296 INFO L225 Difference]: With dead ends: 193 [2020-08-21 22:44:59,296 INFO L226 Difference]: Without dead ends: 130 [2020-08-21 22:44:59,298 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 [2020-08-21 22:44:59,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-21 22:44:59,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 105. [2020-08-21 22:44:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-21 22:44:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-08-21 22:44:59,337 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 47 [2020-08-21 22:44:59,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:44:59,337 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-08-21 22:44:59,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:44:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-08-21 22:44:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 22:44:59,342 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:44:59,342 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] [2020-08-21 22:44:59,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:44:59,342 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:44:59,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:44:59,343 INFO L82 PathProgramCache]: Analyzing trace with hash -421022276, now seen corresponding path program 1 times [2020-08-21 22:44:59,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:44:59,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982463989] [2020-08-21 22:44:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:44:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:59,741 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:44:59,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:44:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:59,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:44:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:59,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:44:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:59,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:44:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:59,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:44:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:59,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:44:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:59,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:44:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:44:59,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:44:59,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982463989] [2020-08-21 22:44:59,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:44:59,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:44:59,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575622456] [2020-08-21 22:44:59,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:44:59,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:44:59,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:44:59,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:44:59,840 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 8 states. [2020-08-21 22:45:00,244 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:00,537 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:00,804 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:01,043 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:01,801 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:03,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:03,203 INFO L93 Difference]: Finished difference Result 363 states and 449 transitions. [2020-08-21 22:45:03,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:45:03,205 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 22:45:03,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:03,209 INFO L225 Difference]: With dead ends: 363 [2020-08-21 22:45:03,209 INFO L226 Difference]: Without dead ends: 282 [2020-08-21 22:45:03,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:45:03,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-21 22:45:03,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 216. [2020-08-21 22:45:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-21 22:45:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-08-21 22:45:03,280 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 51 [2020-08-21 22:45:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:03,280 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-08-21 22:45:03,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:45:03,280 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-08-21 22:45:03,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 22:45:03,283 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:03,283 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] [2020-08-21 22:45:03,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:45:03,284 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:03,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:03,284 INFO L82 PathProgramCache]: Analyzing trace with hash 498542477, now seen corresponding path program 1 times [2020-08-21 22:45:03,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:03,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979018194] [2020-08-21 22:45:03,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,587 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:03,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:45:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:45:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 22:45:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:03,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:45:03,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979018194] [2020-08-21 22:45:03,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:03,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:45:03,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665735813] [2020-08-21 22:45:03,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:45:03,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:03,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:45:03,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:45:03,672 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand 8 states. [2020-08-21 22:45:04,028 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:05,091 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:05,421 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:05,704 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:05,958 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:06,327 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:07,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:07,079 INFO L93 Difference]: Finished difference Result 698 states and 907 transitions. [2020-08-21 22:45:07,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 22:45:07,081 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 22:45:07,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:07,086 INFO L225 Difference]: With dead ends: 698 [2020-08-21 22:45:07,087 INFO L226 Difference]: Without dead ends: 506 [2020-08-21 22:45:07,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 22:45:07,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-21 22:45:07,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 387. [2020-08-21 22:45:07,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-21 22:45:07,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 466 transitions. [2020-08-21 22:45:07,199 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 466 transitions. Word has length 57 [2020-08-21 22:45:07,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:07,199 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 466 transitions. [2020-08-21 22:45:07,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:45:07,199 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 466 transitions. [2020-08-21 22:45:07,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 22:45:07,203 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:07,203 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] [2020-08-21 22:45:07,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:45:07,203 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:07,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:07,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1390027601, now seen corresponding path program 1 times [2020-08-21 22:45:07,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:07,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678514708] [2020-08-21 22:45:07,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,504 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:07,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 22:45:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:45:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:45:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 22:45:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:45:07,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678514708] [2020-08-21 22:45:07,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:07,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:45:07,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350281971] [2020-08-21 22:45:07,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:45:07,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:07,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:45:07,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:45:07,612 INFO L87 Difference]: Start difference. First operand 387 states and 466 transitions. Second operand 9 states. [2020-08-21 22:45:08,016 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:09,022 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:09,317 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:09,569 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:10,063 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:10,332 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:11,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:11,073 INFO L93 Difference]: Finished difference Result 1120 states and 1488 transitions. [2020-08-21 22:45:11,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 22:45:11,074 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-21 22:45:11,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:11,083 INFO L225 Difference]: With dead ends: 1120 [2020-08-21 22:45:11,084 INFO L226 Difference]: Without dead ends: 757 [2020-08-21 22:45:11,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 22:45:11,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-08-21 22:45:11,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 599. [2020-08-21 22:45:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-08-21 22:45:11,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 735 transitions. [2020-08-21 22:45:11,241 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 735 transitions. Word has length 61 [2020-08-21 22:45:11,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:11,242 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 735 transitions. [2020-08-21 22:45:11,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:45:11,242 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 735 transitions. [2020-08-21 22:45:11,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 22:45:11,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:11,245 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] [2020-08-21 22:45:11,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:45:11,245 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:11,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:11,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1223870708, now seen corresponding path program 1 times [2020-08-21 22:45:11,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:11,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158484902] [2020-08-21 22:45:11,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:11,496 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:11,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:11,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:11,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:11,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:11,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:11,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 22:45:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:11,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:45:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:11,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:11,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:11,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:11,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:45:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 22:45:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:11,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:45:11,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158484902] [2020-08-21 22:45:11,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:11,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:45:11,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407675773] [2020-08-21 22:45:11,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:45:11,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:11,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:45:11,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:45:11,639 INFO L87 Difference]: Start difference. First operand 599 states and 735 transitions. Second operand 9 states. [2020-08-21 22:45:12,206 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:13,057 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:13,297 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:45:13,574 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:13,842 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:45:15,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:15,436 INFO L93 Difference]: Finished difference Result 2076 states and 2949 transitions. [2020-08-21 22:45:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 22:45:15,437 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-21 22:45:15,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:15,454 INFO L225 Difference]: With dead ends: 2076 [2020-08-21 22:45:15,454 INFO L226 Difference]: Without dead ends: 1501 [2020-08-21 22:45:15,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:45:15,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2020-08-21 22:45:15,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1127. [2020-08-21 22:45:15,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-08-21 22:45:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1380 transitions. [2020-08-21 22:45:15,735 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1380 transitions. Word has length 78 [2020-08-21 22:45:15,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:15,736 INFO L479 AbstractCegarLoop]: Abstraction has 1127 states and 1380 transitions. [2020-08-21 22:45:15,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:45:15,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1380 transitions. [2020-08-21 22:45:15,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 22:45:15,739 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:15,740 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] [2020-08-21 22:45:15,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:45:15,740 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:15,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:15,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1060992747, now seen corresponding path program 1 times [2020-08-21 22:45:15,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:15,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983027162] [2020-08-21 22:45:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:16,021 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:16,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:16,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:16,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:16,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:16,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:16,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 22:45:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:16,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:45:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:16,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:16,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:16,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:16,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:45:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:16,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 22:45:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:45:16,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983027162] [2020-08-21 22:45:16,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:16,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:45:16,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388364775] [2020-08-21 22:45:16,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:45:16,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:16,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:45:16,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:45:16,159 INFO L87 Difference]: Start difference. First operand 1127 states and 1380 transitions. Second operand 9 states. [2020-08-21 22:45:17,180 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:17,436 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:45:17,694 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:17,952 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:19,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:19,242 INFO L93 Difference]: Finished difference Result 2617 states and 3478 transitions. [2020-08-21 22:45:19,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:45:19,242 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-21 22:45:19,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:19,258 INFO L225 Difference]: With dead ends: 2617 [2020-08-21 22:45:19,263 INFO L226 Difference]: Without dead ends: 1514 [2020-08-21 22:45:19,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:45:19,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2020-08-21 22:45:19,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1167. [2020-08-21 22:45:19,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2020-08-21 22:45:19,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1420 transitions. [2020-08-21 22:45:19,518 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1420 transitions. Word has length 78 [2020-08-21 22:45:19,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:19,519 INFO L479 AbstractCegarLoop]: Abstraction has 1167 states and 1420 transitions. [2020-08-21 22:45:19,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:45:19,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1420 transitions. [2020-08-21 22:45:19,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 22:45:19,523 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:19,523 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] [2020-08-21 22:45:19,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:45:19,524 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:19,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1570465837, now seen corresponding path program 1 times [2020-08-21 22:45:19,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:19,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041449040] [2020-08-21 22:45:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,803 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:19,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 22:45:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:45:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 22:45:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 22:45:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:45:20,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041449040] [2020-08-21 22:45:20,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:20,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 22:45:20,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806373534] [2020-08-21 22:45:20,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 22:45:20,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:20,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 22:45:20,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:45:20,071 INFO L87 Difference]: Start difference. First operand 1167 states and 1420 transitions. Second operand 11 states. [2020-08-21 22:45:20,822 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:21,069 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:21,305 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:21,958 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:22,224 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:22,471 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:23,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:23,536 INFO L93 Difference]: Finished difference Result 2323 states and 3044 transitions. [2020-08-21 22:45:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 22:45:23,537 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-08-21 22:45:23,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:23,547 INFO L225 Difference]: With dead ends: 2323 [2020-08-21 22:45:23,547 INFO L226 Difference]: Without dead ends: 1180 [2020-08-21 22:45:23,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:45:23,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2020-08-21 22:45:23,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 949. [2020-08-21 22:45:23,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2020-08-21 22:45:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1124 transitions. [2020-08-21 22:45:23,816 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1124 transitions. Word has length 78 [2020-08-21 22:45:23,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:23,817 INFO L479 AbstractCegarLoop]: Abstraction has 949 states and 1124 transitions. [2020-08-21 22:45:23,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 22:45:23,817 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1124 transitions. [2020-08-21 22:45:23,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 22:45:23,820 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:23,820 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] [2020-08-21 22:45:23,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:45:23,820 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:23,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:23,821 INFO L82 PathProgramCache]: Analyzing trace with hash -341045236, now seen corresponding path program 1 times [2020-08-21 22:45:23,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:23,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227349317] [2020-08-21 22:45:23,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:45:23,921 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:45:23,922 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:45:23,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:45:23,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:45:23 BoogieIcfgContainer [2020-08-21 22:45:23,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:45:23,976 INFO L168 Benchmark]: Toolchain (without parser) took 30303.88 ms. Allocated memory was 140.5 MB in the beginning and 621.3 MB in the end (delta: 480.8 MB). Free memory was 103.1 MB in the beginning and 198.1 MB in the end (delta: -95.0 MB). Peak memory consumption was 385.8 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:23,981 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 22:45:23,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.92 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 173.8 MB in the end (delta: -70.9 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:23,989 INFO L168 Benchmark]: Boogie Preprocessor took 128.57 ms. Allocated memory is still 204.5 MB. Free memory was 173.8 MB in the beginning and 169.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:23,991 INFO L168 Benchmark]: RCFGBuilder took 1238.10 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 169.4 MB in the beginning and 200.7 MB in the end (delta: -31.2 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:23,993 INFO L168 Benchmark]: TraceAbstraction took 28320.08 ms. Allocated memory was 237.0 MB in the beginning and 621.3 MB in the end (delta: 384.3 MB). Free memory was 200.7 MB in the beginning and 198.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 386.8 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:24,001 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 609.92 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 173.8 MB in the end (delta: -70.9 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.57 ms. Allocated memory is still 204.5 MB. Free memory was 173.8 MB in the beginning and 169.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1238.10 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 169.4 MB in the beginning and 200.7 MB in the end (delta: -31.2 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28320.08 ms. Allocated memory was 237.0 MB in the beginning and 621.3 MB in the end (delta: 384.3 MB). Free memory was 200.7 MB in the beginning and 198.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 386.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 145]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L250] int pumpRunning = 0; [L251] int systemActive = 1; [L455] int cleanupTimeShifts = 4; [L720] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L528] int retValue_acc ; [L529] int tmp ; [L533] FCALL select_helpers() [L534] FCALL select_features() [L535] CALL, EXPR valid_product() [L446] int retValue_acc ; [L449] retValue_acc = 1 [L450] return (retValue_acc); [L535] RET, EXPR valid_product() [L535] tmp = valid_product() [L537] COND TRUE \read(tmp) [L539] FCALL setup() [L540] CALL runTest() [L522] CALL test() [L181] int splverifierCounter ; [L182] int tmp ; [L183] int tmp___0 ; [L184] int tmp___1 ; [L185] int tmp___2 ; [L188] splverifierCounter = 0 [L190] COND TRUE 1 [L192] COND TRUE splverifierCounter < 4 [L198] tmp = __VERIFIER_nondet_int() [L200] COND TRUE \read(tmp) [L202] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L202] RET waterRise() [L208] tmp___0 = __VERIFIER_nondet_int() [L210] COND TRUE \read(tmp___0) [L212] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L212] RET changeMethaneLevel() [L218] tmp___2 = __VERIFIER_nondet_int() [L220] COND TRUE \read(tmp___2) [L235] CALL timeShift() [L257] COND FALSE !(\read(pumpRunning)) [L264] COND TRUE \read(systemActive) [L266] CALL processEnvironment() [L286] int tmp ; [L289] COND TRUE ! pumpRunning [L291] CALL, EXPR isHighWaterLevel() [L383] int retValue_acc ; [L384] int tmp ; [L385] int tmp___0 ; [L389] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L389] RET, EXPR isHighWaterSensorDry() [L389] tmp = isHighWaterSensorDry() [L391] COND FALSE !(\read(tmp)) [L394] tmp___0 = 1 [L396] retValue_acc = tmp___0 [L397] return (retValue_acc); [L291] RET, EXPR isHighWaterLevel() [L291] tmp = isHighWaterLevel() [L293] COND TRUE \read(tmp) [L295] CALL activatePump() [L314] pumpRunning = 1 [L295] RET activatePump() [L266] RET processEnvironment() [L272] CALL __utac_acc__Specification1_spec__1() [L152] int tmp ; [L153] int tmp___0 ; [L157] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L157] RET, EXPR isMethaneLevelCritical() [L157] tmp = isMethaneLevelCritical() [L159] COND TRUE \read(tmp) [L161] CALL, EXPR isPumpRunning() [L338] int retValue_acc ; [L341] retValue_acc = pumpRunning [L342] return (retValue_acc); [L161] RET, EXPR isPumpRunning() [L161] tmp___0 = isPumpRunning() [L163] COND TRUE \read(tmp___0) [L165] CALL __automaton_fail() [L145] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 22.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 796 SDtfs, 1497 SDslu, 1035 SDs, 0 SdLazy, 4680 SolverSat, 936 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1167occurred in iteration=7, 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, 1352 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 578 NumberOfCodeBlocks, 578 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 488 ConstructedInterpolants, 0 QuantifiedInterpolants, 143632 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...