/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:54:04,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:54:04,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:54:04,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:54:04,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:54:04,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:54:04,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:54:04,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:54:04,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:54:04,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:54:04,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:54:04,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:54:04,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:54:04,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:54:04,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:54:04,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:54:04,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:54:04,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:54:04,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:54:04,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:54:04,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:54:04,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:54:04,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:54:04,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:54:04,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:54:04,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:54:04,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:54:04,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:54:04,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:54:04,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:54:04,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:54:04,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:54:04,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:54:04,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:54:04,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:54:04,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:54:04,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:54:04,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:54:04,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:54:04,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:54:04,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:54:04,173 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:54:04,197 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:54:04,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:54:04,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:54:04,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:54:04,199 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:54:04,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:54:04,199 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:54:04,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:54:04,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:54:04,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:54:04,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:54:04,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:54:04,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:54:04,201 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:54:04,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:54:04,202 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:54:04,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:54:04,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:54:04,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:54:04,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:54:04,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:54:04,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:54:04,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:54:04,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:54:04,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:54:04,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:54:04,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:54:04,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:54:04,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:54:04,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 16:54:04,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:54:04,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:54:04,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:54:04,613 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:54:04,613 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:54:04,615 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c [2020-08-18 16:54:04,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f07132b9/be2786c1dfba458f9616f14c03bd4eaa/FLAGfc0ee9fd6 [2020-08-18 16:54:05,177 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:54:05,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c [2020-08-18 16:54:05,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f07132b9/be2786c1dfba458f9616f14c03bd4eaa/FLAGfc0ee9fd6 [2020-08-18 16:54:05,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f07132b9/be2786c1dfba458f9616f14c03bd4eaa [2020-08-18 16:54:05,513 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:54:05,515 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:54:05,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:54:05,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:54:05,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:54:05,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:54:05" (1/1) ... [2020-08-18 16:54:05,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b54cc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:05, skipping insertion in model container [2020-08-18 16:54:05,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:54:05" (1/1) ... [2020-08-18 16:54:05,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:54:05,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:54:06,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:54:06,170 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:54:06,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:54:06,290 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:54:06,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:06 WrapperNode [2020-08-18 16:54:06,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:54:06,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:54:06,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:54:06,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:54:06,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:06" (1/1) ... [2020-08-18 16:54:06,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:06" (1/1) ... [2020-08-18 16:54:06,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:06" (1/1) ... [2020-08-18 16:54:06,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:06" (1/1) ... [2020-08-18 16:54:06,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:06" (1/1) ... [2020-08-18 16:54:06,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:06" (1/1) ... [2020-08-18 16:54:06,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:06" (1/1) ... [2020-08-18 16:54:06,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:54:06,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:54:06,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:54:06,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:54:06,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:54:06,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:54:06,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:54:06,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:54:06,456 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:54:06,456 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:54:06,456 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:54:06,456 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:54:06,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:54:06,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:54:06,457 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:54:06,457 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:54:06,457 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:54:06,457 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:54:06,458 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:54:06,458 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:54:06,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:54:06,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:54:06,458 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:54:06,459 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:54:06,459 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:54:06,459 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:54:06,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:54:06,460 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:54:06,460 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:54:06,460 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:54:06,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:54:06,460 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:54:06,460 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:54:06,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:54:06,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:54:06,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:54:06,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:54:06,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:54:06,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:54:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:54:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:54:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:54:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:54:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:54:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:54:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:54:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:54:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:54:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:54:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:54:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:54:06,464 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:54:06,464 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:54:06,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:54:06,464 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:54:06,464 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:54:06,464 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:54:06,464 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:54:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:54:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:54:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:54:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:54:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:54:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:54:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:54:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:54:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:54:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:54:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:54:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:54:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:54:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:54:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:54:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:54:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:54:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:54:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:54:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:54:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:54:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:54:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:54:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:54:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:54:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:54:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:54:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:54:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:54:07,536 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:54:07,536 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:54:07,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:54:07 BoogieIcfgContainer [2020-08-18 16:54:07,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:54:07,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:54:07,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:54:07,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:54:07,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:54:05" (1/3) ... [2020-08-18 16:54:07,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729bac9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:54:07, skipping insertion in model container [2020-08-18 16:54:07,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:06" (2/3) ... [2020-08-18 16:54:07,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729bac9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:54:07, skipping insertion in model container [2020-08-18 16:54:07,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:54:07" (3/3) ... [2020-08-18 16:54:07,557 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product01.cil.c [2020-08-18 16:54:07,569 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:54:07,580 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:54:07,595 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:54:07,622 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:54:07,622 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:54:07,622 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:54:07,622 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:54:07,622 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:54:07,622 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:54:07,622 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:54:07,623 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:54:07,647 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states. [2020-08-18 16:54:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:54:07,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:07,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:54:07,664 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:07,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:07,672 INFO L82 PathProgramCache]: Analyzing trace with hash -438635737, now seen corresponding path program 1 times [2020-08-18 16:54:07,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:07,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707101572] [2020-08-18 16:54:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,327 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:54:08,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:54:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:54:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:54:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:54:08,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707101572] [2020-08-18 16:54:08,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:08,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:54:08,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672592474] [2020-08-18 16:54:08,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:54:08,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:08,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:54:08,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:54:08,499 INFO L87 Difference]: Start difference. First operand 133 states. Second operand 3 states. [2020-08-18 16:54:09,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:09,365 INFO L93 Difference]: Finished difference Result 211 states and 284 transitions. [2020-08-18 16:54:09,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:54:09,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 16:54:09,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:09,383 INFO L225 Difference]: With dead ends: 211 [2020-08-18 16:54:09,384 INFO L226 Difference]: Without dead ends: 115 [2020-08-18 16:54:09,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:54:09,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-18 16:54:09,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2020-08-18 16:54:09,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-08-18 16:54:09,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2020-08-18 16:54:09,466 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 52 [2020-08-18 16:54:09,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:09,467 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2020-08-18 16:54:09,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:54:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2020-08-18 16:54:09,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 16:54:09,471 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:09,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:54:09,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:54:09,472 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:09,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:09,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1274777231, now seen corresponding path program 1 times [2020-08-18 16:54:09,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:09,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772823324] [2020-08-18 16:54:09,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:09,817 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:54:09,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:09,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:09,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:09,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:09,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:09,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:54:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:09,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:54:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:09,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:54:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:54:09,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772823324] [2020-08-18 16:54:09,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:09,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:54:09,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656811498] [2020-08-18 16:54:09,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:54:09,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:09,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:54:09,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:54:09,866 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand 4 states. [2020-08-18 16:54:10,272 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:54:10,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:10,783 INFO L93 Difference]: Finished difference Result 144 states and 175 transitions. [2020-08-18 16:54:10,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:54:10,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 16:54:10,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:10,787 INFO L225 Difference]: With dead ends: 144 [2020-08-18 16:54:10,787 INFO L226 Difference]: Without dead ends: 99 [2020-08-18 16:54:10,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:54:10,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-18 16:54:10,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-18 16:54:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 16:54:10,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 16:54:10,819 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 53 [2020-08-18 16:54:10,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:10,819 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 16:54:10,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:54:10,820 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 16:54:10,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 16:54:10,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:10,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:54:10,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:54:10,822 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:10,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:10,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1377435257, now seen corresponding path program 1 times [2020-08-18 16:54:10,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:10,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878142690] [2020-08-18 16:54:10,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:11,141 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:54:11,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:11,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:11,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:11,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:11,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:11,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:54:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:11,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:54:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:11,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:54:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:54:11,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878142690] [2020-08-18 16:54:11,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:11,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:54:11,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648026496] [2020-08-18 16:54:11,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:54:11,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:11,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:54:11,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:54:11,198 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-18 16:54:11,478 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:54:12,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:12,033 INFO L93 Difference]: Finished difference Result 153 states and 189 transitions. [2020-08-18 16:54:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:54:12,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-08-18 16:54:12,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:12,040 INFO L225 Difference]: With dead ends: 153 [2020-08-18 16:54:12,040 INFO L226 Difference]: Without dead ends: 99 [2020-08-18 16:54:12,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:54:12,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-18 16:54:12,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-18 16:54:12,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 16:54:12,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2020-08-18 16:54:12,070 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 57 [2020-08-18 16:54:12,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:12,071 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2020-08-18 16:54:12,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:54:12,071 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2020-08-18 16:54:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 16:54:12,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:12,073 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] [2020-08-18 16:54:12,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:54:12,073 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:12,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:12,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1699431063, now seen corresponding path program 1 times [2020-08-18 16:54:12,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:12,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782284472] [2020-08-18 16:54:12,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:12,356 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:54:12,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:12,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:12,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:12,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:12,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:12,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:54:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:12,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:54:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:12,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 16:54:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:12,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 16:54:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:54:12,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782284472] [2020-08-18 16:54:12,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:12,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:54:12,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667301277] [2020-08-18 16:54:12,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:54:12,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:12,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:54:12,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:54:12,436 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand 7 states. [2020-08-18 16:54:12,762 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:54:13,666 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:54:13,946 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:54:14,200 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:54:14,439 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:54:14,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:14,671 INFO L93 Difference]: Finished difference Result 196 states and 245 transitions. [2020-08-18 16:54:14,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:54:14,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-08-18 16:54:14,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:14,676 INFO L225 Difference]: With dead ends: 196 [2020-08-18 16:54:14,676 INFO L226 Difference]: Without dead ends: 142 [2020-08-18 16:54:14,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:54:14,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-18 16:54:14,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 128. [2020-08-18 16:54:14,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-18 16:54:14,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-08-18 16:54:14,714 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 60 [2020-08-18 16:54:14,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:14,715 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-08-18 16:54:14,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:54:14,715 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-08-18 16:54:14,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 16:54:14,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:14,717 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] [2020-08-18 16:54:14,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:54:14,718 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:14,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:14,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1843670287, now seen corresponding path program 1 times [2020-08-18 16:54:14,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:14,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190934944] [2020-08-18 16:54:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:14,972 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:54:14,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:15,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:15,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:15,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:15,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:15,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:54:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:15,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:54:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:15,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:54:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:15,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:54:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:15,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 16:54:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:54:15,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190934944] [2020-08-18 16:54:15,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:15,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:54:15,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351441394] [2020-08-18 16:54:15,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:54:15,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:15,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:54:15,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:54:15,037 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 5 states. [2020-08-18 16:54:15,362 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:54:15,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:15,808 INFO L93 Difference]: Finished difference Result 192 states and 233 transitions. [2020-08-18 16:54:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 16:54:15,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-08-18 16:54:15,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:15,812 INFO L225 Difference]: With dead ends: 192 [2020-08-18 16:54:15,812 INFO L226 Difference]: Without dead ends: 127 [2020-08-18 16:54:15,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:54:15,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-18 16:54:15,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115. [2020-08-18 16:54:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-18 16:54:15,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2020-08-18 16:54:15,843 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 64 [2020-08-18 16:54:15,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:15,843 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2020-08-18 16:54:15,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:54:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2020-08-18 16:54:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 16:54:15,845 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:15,845 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] [2020-08-18 16:54:15,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:54:15,846 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:15,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:15,846 INFO L82 PathProgramCache]: Analyzing trace with hash -2045663983, now seen corresponding path program 1 times [2020-08-18 16:54:15,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:15,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7616389] [2020-08-18 16:54:15,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:54:15,901 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:54:15,901 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:54:15,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:54:15,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:54:15 BoogieIcfgContainer [2020-08-18 16:54:15,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:54:15,928 INFO L168 Benchmark]: Toolchain (without parser) took 10414.05 ms. Allocated memory was 144.7 MB in the beginning and 388.0 MB in the end (delta: 243.3 MB). Free memory was 99.6 MB in the beginning and 200.9 MB in the end (delta: -101.3 MB). Peak memory consumption was 142.0 MB. Max. memory is 7.1 GB. [2020-08-18 16:54:15,929 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 16:54:15,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 776.24 ms. Allocated memory was 144.7 MB in the beginning and 199.8 MB in the end (delta: 55.1 MB). Free memory was 99.4 MB in the beginning and 168.8 MB in the end (delta: -69.4 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:54:15,931 INFO L168 Benchmark]: Boogie Preprocessor took 103.99 ms. Allocated memory is still 199.8 MB. Free memory was 168.8 MB in the beginning and 164.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:54:15,932 INFO L168 Benchmark]: RCFGBuilder took 1148.94 ms. Allocated memory was 199.8 MB in the beginning and 229.6 MB in the end (delta: 29.9 MB). Free memory was 164.5 MB in the beginning and 200.7 MB in the end (delta: -36.2 MB). Peak memory consumption was 87.9 MB. Max. memory is 7.1 GB. [2020-08-18 16:54:15,933 INFO L168 Benchmark]: TraceAbstraction took 8377.68 ms. Allocated memory was 229.6 MB in the beginning and 388.0 MB in the end (delta: 158.3 MB). Free memory was 200.7 MB in the beginning and 200.9 MB in the end (delta: -161.4 kB). Peak memory consumption was 158.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:54:15,936 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 776.24 ms. Allocated memory was 144.7 MB in the beginning and 199.8 MB in the end (delta: 55.1 MB). Free memory was 99.4 MB in the beginning and 168.8 MB in the end (delta: -69.4 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.99 ms. Allocated memory is still 199.8 MB. Free memory was 168.8 MB in the beginning and 164.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1148.94 ms. Allocated memory was 199.8 MB in the beginning and 229.6 MB in the end (delta: 29.9 MB). Free memory was 164.5 MB in the beginning and 200.7 MB in the end (delta: -36.2 MB). Peak memory consumption was 87.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8377.68 ms. Allocated memory was 229.6 MB in the beginning and 388.0 MB in the end (delta: 158.3 MB). Free memory was 200.7 MB in the beginning and 200.9 MB in the end (delta: -161.4 kB). Peak memory consumption was 158.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 302]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int pumpRunning = 0; [L49] int systemActive = 1; [L307] int cleanupTimeShifts = 4; [L403] int waterLevel = 1; [L404] int methaneLevelCritical = 0; [L652] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L380] int retValue_acc ; [L381] int tmp ; [L385] FCALL select_helpers() [L386] FCALL select_features() [L387] CALL, EXPR valid_product() [L253] int retValue_acc ; [L256] retValue_acc = 1 [L257] return (retValue_acc); [L387] RET, EXPR valid_product() [L387] tmp = valid_product() [L389] COND TRUE \read(tmp) [L391] FCALL setup() [L392] CALL runTest() [L374] CALL test() [L160] int splverifierCounter ; [L161] int tmp ; [L162] int tmp___0 ; [L163] int tmp___1 ; [L164] int tmp___2 ; [L167] splverifierCounter = 0 [L169] COND TRUE 1 [L171] COND TRUE splverifierCounter < 4 [L177] tmp = __VERIFIER_nondet_int() [L179] COND TRUE \read(tmp) [L181] CALL waterRise() [L421] COND TRUE waterLevel < 2 [L422] waterLevel = waterLevel + 1 [L181] RET waterRise() [L187] tmp___0 = __VERIFIER_nondet_int() [L189] COND FALSE !(\read(tmp___0)) [L197] tmp___2 = __VERIFIER_nondet_int() [L199] COND TRUE \read(tmp___2) [L212] CALL timeShift() [L56] COND FALSE !(\read(pumpRunning)) [L63] COND TRUE \read(systemActive) [L65] FCALL processEnvironment() [L71] CALL __utac_acc__Specification3_spec__1() [L265] int tmp ; [L266] int tmp___0 ; [L267] int tmp___1 ; [L271] CALL, EXPR isMethaneLevelCritical() [L442] int retValue_acc ; [L445] retValue_acc = methaneLevelCritical [L446] return (retValue_acc); [L271] RET, EXPR isMethaneLevelCritical() [L271] tmp = isMethaneLevelCritical() [L273] COND FALSE !(\read(tmp)) [L277] CALL, EXPR getWaterLevel() [L474] int retValue_acc ; [L477] retValue_acc = waterLevel [L478] return (retValue_acc); [L277] RET, EXPR getWaterLevel() [L277] tmp___0 = getWaterLevel() [L279] COND TRUE tmp___0 == 2 [L281] CALL, EXPR isPumpRunning() [L111] int retValue_acc ; [L114] retValue_acc = pumpRunning [L115] return (retValue_acc); [L281] RET, EXPR isPumpRunning() [L281] tmp___1 = isPumpRunning() [L283] COND FALSE !(\read(tmp___1)) [L287] CALL __automaton_fail() [L302] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 34 procedures, 197 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 366 SDtfs, 443 SDslu, 159 SDs, 0 SdLazy, 702 SolverSat, 237 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 96 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 350 NumberOfCodeBlocks, 350 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 281 ConstructedInterpolants, 0 QuantifiedInterpolants, 77364 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...