/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=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:58:30,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:58:30,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:58:30,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:58:30,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:58:30,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:58:30,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:58:30,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:58:30,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:58:30,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:58:30,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:58:30,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:58:30,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:58:30,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:58:30,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:58:30,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:58:30,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:58:30,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:58:30,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:58:30,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:58:30,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:58:30,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:58:30,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:58:30,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:58:30,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:58:30,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:58:30,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:58:30,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:58:30,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:58:30,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:58:30,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:58:30,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:58:30,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:58:30,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:58:30,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:58:30,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:58:30,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:58:30,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:58:30,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:58:30,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:58:30,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:58:30,208 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 20:58:30,230 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:58:30,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:58:30,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:58:30,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:58:30,232 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:58:30,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:58:30,233 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:58:30,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:58:30,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:58:30,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:58:30,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:58:30,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:58:30,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:58:30,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:58:30,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:58:30,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:58:30,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:58:30,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:58:30,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:58:30,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:58:30,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:58:30,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:58:30,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:58:30,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:58:30,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:58:30,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:58:30,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:58:30,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:58:30,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:58:30,238 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=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 20:58:30,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:58:30,548 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:58:30,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:58:30,553 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:58:30,554 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:58:30,554 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-18 20:58:30,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3ecd2843/8e4b255329284328b86e8d8202dc863c/FLAG5155c55a6 [2020-08-18 20:58:31,252 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:58:31,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-18 20:58:31,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3ecd2843/8e4b255329284328b86e8d8202dc863c/FLAG5155c55a6 [2020-08-18 20:58:31,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3ecd2843/8e4b255329284328b86e8d8202dc863c [2020-08-18 20:58:31,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:58:31,567 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:58:31,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:58:31,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:58:31,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:58:31,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:58:31" (1/1) ... [2020-08-18 20:58:31,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a35e781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:58:31, skipping insertion in model container [2020-08-18 20:58:31,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:58:31" (1/1) ... [2020-08-18 20:58:31,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:58:31,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:58:32,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:58:32,089 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:58:32,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:58:32,200 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:58:32,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:58:32 WrapperNode [2020-08-18 20:58:32,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:58:32,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:58:32,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:58:32,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:58:32,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:58:32" (1/1) ... [2020-08-18 20:58:32,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:58:32" (1/1) ... [2020-08-18 20:58:32,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:58:32" (1/1) ... [2020-08-18 20:58:32,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:58:32" (1/1) ... [2020-08-18 20:58:32,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:58:32" (1/1) ... [2020-08-18 20:58:32,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:58:32" (1/1) ... [2020-08-18 20:58:32,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:58:32" (1/1) ... [2020-08-18 20:58:32,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:58:32,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:58:32,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:58:32,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:58:32,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:58:32" (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 20:58:32,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:58:32,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:58:32,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:58:32,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:58:32,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:58:32,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:58:32,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:58:32,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:58:32,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:58:32,380 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:58:32,381 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:58:32,381 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:58:32,381 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:58:32,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:58:32,381 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:58:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:58:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:58:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:58:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:58:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:58:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:58:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:58:32,384 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:58:32,384 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:58:32,385 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:58:32,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:58:32,385 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:58:32,386 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:58:32,386 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:58:32,386 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:58:32,386 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:58:32,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:58:32,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:58:32,387 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:58:32,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:58:32,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:58:32,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 20:58:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:58:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:58:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:58:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:58:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:58:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:58:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:58:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:58:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:58:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:58:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:58:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:58:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:58:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:58:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:58:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:58:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:58:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:58:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:58:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:58:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:58:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:58:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:58:32,391 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:58:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:58:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:58:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:58:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:58:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:58:32,392 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:58:32,393 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:58:32,393 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:58:32,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:58:32,393 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:58:32,393 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:58:32,394 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:58:32,394 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:58:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:58:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:58:32,396 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:58:32,396 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:58:32,396 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:58:32,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 20:58:32,397 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:58:32,397 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:58:32,397 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:58:32,398 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:58:32,398 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:58:32,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:58:32,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:58:32,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:58:33,577 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:58:33,578 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:58:33,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:58:33 BoogieIcfgContainer [2020-08-18 20:58:33,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:58:33,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:58:33,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:58:33,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:58:33,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:58:31" (1/3) ... [2020-08-18 20:58:33,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ece5c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:58:33, skipping insertion in model container [2020-08-18 20:58:33,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:58:32" (2/3) ... [2020-08-18 20:58:33,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ece5c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:58:33, skipping insertion in model container [2020-08-18 20:58:33,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:58:33" (3/3) ... [2020-08-18 20:58:33,597 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2020-08-18 20:58:33,608 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:58:33,619 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:58:33,633 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:58:33,655 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:58:33,655 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:58:33,655 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:58:33,656 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:58:33,656 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:58:33,656 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:58:33,656 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:58:33,657 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:58:33,681 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-08-18 20:58:33,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 20:58:33,691 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:58:33,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:58:33,693 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:58:33,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:58:33,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1120421974, now seen corresponding path program 1 times [2020-08-18 20:58:33,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:58:33,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769159414] [2020-08-18 20:58:33,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:58:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:34,393 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:58:34,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:58:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:34,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:58:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:34,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:58:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:34,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:58:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:34,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:58:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:34,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:58:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:34,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:58:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:34,495 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 20:58:34,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769159414] [2020-08-18 20:58:34,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:58:34,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:58:34,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805405126] [2020-08-18 20:58:34,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:58:34,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:58:34,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:58:34,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:58:34,532 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-08-18 20:58:35,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:58:35,551 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-18 20:58:35,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:58:35,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 20:58:35,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:58:35,568 INFO L225 Difference]: With dead ends: 249 [2020-08-18 20:58:35,569 INFO L226 Difference]: Without dead ends: 135 [2020-08-18 20:58:35,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:58:35,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-18 20:58:35,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-18 20:58:35,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 20:58:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-18 20:58:35,663 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2020-08-18 20:58:35,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:58:35,664 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-18 20:58:35,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:58:35,664 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-18 20:58:35,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 20:58:35,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:58:35,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:58:35,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:58:35,668 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:58:35,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:58:35,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1195015831, now seen corresponding path program 1 times [2020-08-18 20:58:35,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:58:35,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619962484] [2020-08-18 20:58:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:58:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:36,035 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:58:36,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:58:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:36,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:58:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:36,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:58:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:36,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:58:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:36,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:58:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:36,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:58:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:36,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:58:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:36,125 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 20:58:36,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619962484] [2020-08-18 20:58:36,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:58:36,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:58:36,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151053339] [2020-08-18 20:58:36,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:58:36,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:58:36,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:58:36,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:58:36,131 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-18 20:58:36,549 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:58:37,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:58:37,181 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-18 20:58:37,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:58:37,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 20:58:37,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:58:37,185 INFO L225 Difference]: With dead ends: 182 [2020-08-18 20:58:37,185 INFO L226 Difference]: Without dead ends: 119 [2020-08-18 20:58:37,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:58:37,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-18 20:58:37,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-18 20:58:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-18 20:58:37,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-18 20:58:37,218 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 47 [2020-08-18 20:58:37,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:58:37,218 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-18 20:58:37,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:58:37,218 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-18 20:58:37,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 20:58:37,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:58:37,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:58:37,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:58:37,221 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:58:37,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:58:37,221 INFO L82 PathProgramCache]: Analyzing trace with hash -234309885, now seen corresponding path program 1 times [2020-08-18 20:58:37,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:58:37,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399486753] [2020-08-18 20:58:37,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:58:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:37,509 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:58:37,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:58:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:37,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:58:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:37,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:58:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:37,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:58:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:37,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:58:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:37,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:58:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:37,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:58:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:37,612 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 20:58:37,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399486753] [2020-08-18 20:58:37,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:58:37,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:58:37,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740356484] [2020-08-18 20:58:37,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:58:37,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:58:37,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:58:37,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:58:37,616 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-18 20:58:38,019 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:58:38,317 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:58:38,551 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:58:38,800 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:58:39,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:58:39,642 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-18 20:58:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:58:39,648 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 20:58:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:58:39,650 INFO L225 Difference]: With dead ends: 191 [2020-08-18 20:58:39,651 INFO L226 Difference]: Without dead ends: 119 [2020-08-18 20:58:39,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:58:39,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-18 20:58:39,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-18 20:58:39,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-18 20:58:39,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-18 20:58:39,683 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 51 [2020-08-18 20:58:39,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:58:39,683 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-18 20:58:39,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:58:39,683 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-18 20:58:39,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 20:58:39,685 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:58:39,686 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] [2020-08-18 20:58:39,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:58:39,686 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:58:39,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:58:39,687 INFO L82 PathProgramCache]: Analyzing trace with hash -962632878, now seen corresponding path program 1 times [2020-08-18 20:58:39,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:58:39,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141797571] [2020-08-18 20:58:39,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:58:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:39,978 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:58:39,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:58:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:40,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:58:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:40,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:58:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:40,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:58:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:40,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:58:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:40,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:58:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:40,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:58:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:40,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:58:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:40,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 20:58:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:40,059 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 20:58:40,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141797571] [2020-08-18 20:58:40,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:58:40,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:58:40,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894861458] [2020-08-18 20:58:40,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:58:40,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:58:40,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:58:40,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:58:40,063 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 6 states. [2020-08-18 20:58:40,372 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:58:41,456 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:58:41,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:58:41,869 INFO L93 Difference]: Finished difference Result 274 states and 340 transitions. [2020-08-18 20:58:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:58:41,870 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-18 20:58:41,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:58:41,873 INFO L225 Difference]: With dead ends: 274 [2020-08-18 20:58:41,873 INFO L226 Difference]: Without dead ends: 202 [2020-08-18 20:58:41,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:58:41,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-18 20:58:41,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 161. [2020-08-18 20:58:41,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-18 20:58:41,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-08-18 20:58:41,916 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 59 [2020-08-18 20:58:41,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:58:41,916 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-08-18 20:58:41,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:58:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-08-18 20:58:41,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-18 20:58:41,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:58:41,919 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] [2020-08-18 20:58:41,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:58:41,919 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:58:41,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:58:41,920 INFO L82 PathProgramCache]: Analyzing trace with hash 869233952, now seen corresponding path program 1 times [2020-08-18 20:58:41,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:58:41,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726637665] [2020-08-18 20:58:41,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:58:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:42,222 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:58:42,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:58:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:42,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:58:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:42,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:58:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:42,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:58:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:42,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:58:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:42,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:58:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:42,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:58:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:42,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:58:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:42,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:58:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:42,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 20:58:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:42,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 20:58:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:42,375 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 20:58:42,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726637665] [2020-08-18 20:58:42,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:58:42,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:58:42,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043429282] [2020-08-18 20:58:42,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:58:42,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:58:42,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:58:42,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:58:42,378 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 12 states. [2020-08-18 20:58:42,791 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:58:43,077 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:58:43,311 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:58:43,538 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:58:44,066 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:58:44,786 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:58:45,046 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:58:45,294 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:58:45,520 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:58:45,782 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:58:46,027 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:58:46,897 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:58:47,162 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:58:47,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:58:47,784 INFO L93 Difference]: Finished difference Result 568 states and 750 transitions. [2020-08-18 20:58:47,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 20:58:47,785 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-08-18 20:58:47,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:58:47,791 INFO L225 Difference]: With dead ends: 568 [2020-08-18 20:58:47,792 INFO L226 Difference]: Without dead ends: 431 [2020-08-18 20:58:47,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 20:58:47,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-08-18 20:58:47,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 373. [2020-08-18 20:58:47,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-18 20:58:47,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 443 transitions. [2020-08-18 20:58:47,883 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 443 transitions. Word has length 73 [2020-08-18 20:58:47,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:58:47,884 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 443 transitions. [2020-08-18 20:58:47,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:58:47,884 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 443 transitions. [2020-08-18 20:58:47,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-18 20:58:47,888 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:58:47,888 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:58:47,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:58:47,889 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:58:47,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:58:47,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1689893862, now seen corresponding path program 1 times [2020-08-18 20:58:47,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:58:47,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127590659] [2020-08-18 20:58:47,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:58:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,167 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:58:48,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:58:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:58:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:58:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:58:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:58:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:58:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:58:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:58:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:58:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:58:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:58:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 20:58:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:58:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 20:58:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 20:58:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 20:58:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:58:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 20:58:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:58:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:48,444 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-18 20:58:48,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127590659] [2020-08-18 20:58:48,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:58:48,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 20:58:48,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878798432] [2020-08-18 20:58:48,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 20:58:48,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:58:48,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 20:58:48,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 20:58:48,449 INFO L87 Difference]: Start difference. First operand 373 states and 443 transitions. Second operand 13 states. [2020-08-18 20:58:48,961 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:58:49,578 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:58:50,060 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:58:50,345 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 20:58:50,641 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:58:50,897 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:58:51,149 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:58:51,413 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 20:58:51,691 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:58:51,963 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:58:53,299 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:58:53,547 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:58:53,793 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:58:54,054 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:58:54,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:58:54,564 INFO L93 Difference]: Finished difference Result 778 states and 1000 transitions. [2020-08-18 20:58:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 20:58:54,565 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 117 [2020-08-18 20:58:54,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:58:54,569 INFO L225 Difference]: With dead ends: 778 [2020-08-18 20:58:54,570 INFO L226 Difference]: Without dead ends: 429 [2020-08-18 20:58:54,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 20:58:54,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-18 20:58:54,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 367. [2020-08-18 20:58:54,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-18 20:58:54,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 437 transitions. [2020-08-18 20:58:54,647 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 437 transitions. Word has length 117 [2020-08-18 20:58:54,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:58:54,647 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 437 transitions. [2020-08-18 20:58:54,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 20:58:54,648 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 437 transitions. [2020-08-18 20:58:54,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 20:58:54,650 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:58:54,650 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:58:54,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:58:54,650 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:58:54,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:58:54,651 INFO L82 PathProgramCache]: Analyzing trace with hash -2066212398, now seen corresponding path program 1 times [2020-08-18 20:58:54,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:58:54,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735366051] [2020-08-18 20:58:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:58:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:54,927 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:58:54,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:58:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:54,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:58:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:54,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:58:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:54,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:58:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:54,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:58:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:54,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:58:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:54,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:58:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:54,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:58:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:55,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:58:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:55,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:58:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:55,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 20:58:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:55,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:58:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:55,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 20:58:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:55,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 20:58:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:55,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:58:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:55,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 20:58:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:55,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 20:58:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 20:58:55,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735366051] [2020-08-18 20:58:55,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:58:55,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 20:58:55,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758784540] [2020-08-18 20:58:55,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:58:55,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:58:55,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:58:55,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:58:55,078 INFO L87 Difference]: Start difference. First operand 367 states and 437 transitions. Second operand 12 states. [2020-08-18 20:58:55,560 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:58:55,790 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:58:56,012 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:58:56,529 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:58:56,772 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:58:56,986 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:58:57,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:58:57,641 INFO L93 Difference]: Finished difference Result 663 states and 818 transitions. [2020-08-18 20:58:57,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:58:57,642 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-18 20:58:57,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:58:57,645 INFO L225 Difference]: With dead ends: 663 [2020-08-18 20:58:57,645 INFO L226 Difference]: Without dead ends: 320 [2020-08-18 20:58:57,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:58:57,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-08-18 20:58:57,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 296. [2020-08-18 20:58:57,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-18 20:58:57,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 350 transitions. [2020-08-18 20:58:57,708 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 350 transitions. Word has length 109 [2020-08-18 20:58:57,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:58:57,708 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 350 transitions. [2020-08-18 20:58:57,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:58:57,708 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 350 transitions. [2020-08-18 20:58:57,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-18 20:58:57,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:58:57,710 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:58:57,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:58:57,711 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:58:57,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:58:57,711 INFO L82 PathProgramCache]: Analyzing trace with hash 147640793, now seen corresponding path program 1 times [2020-08-18 20:58:57,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:58:57,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269953726] [2020-08-18 20:58:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:58:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,007 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:58:58,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:58:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:58:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:58:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:58:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:58:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:58:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:58:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:58:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:58:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:58:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:58:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 20:58:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:58:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 20:58:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 20:58:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:58:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 20:58:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 20:58:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:58:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:58:58,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269953726] [2020-08-18 20:58:58,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:58:58,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 20:58:58,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139712332] [2020-08-18 20:58:58,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:58:58,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:58:58,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:58:58,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:58:58,180 INFO L87 Difference]: Start difference. First operand 296 states and 350 transitions. Second operand 12 states. [2020-08-18 20:58:58,519 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:58:59,248 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:58:59,718 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:58:59,974 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:59:00,214 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:59:00,459 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:59:00,700 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:59:00,948 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:59:01,850 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:59:02,103 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:59:02,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:59:02,586 INFO L93 Difference]: Finished difference Result 687 states and 875 transitions. [2020-08-18 20:59:02,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 20:59:02,587 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-08-18 20:59:02,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:59:02,591 INFO L225 Difference]: With dead ends: 687 [2020-08-18 20:59:02,591 INFO L226 Difference]: Without dead ends: 469 [2020-08-18 20:59:02,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2020-08-18 20:59:02,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-08-18 20:59:02,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 393. [2020-08-18 20:59:02,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-08-18 20:59:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 472 transitions. [2020-08-18 20:59:02,670 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 472 transitions. Word has length 113 [2020-08-18 20:59:02,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:59:02,670 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 472 transitions. [2020-08-18 20:59:02,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:59:02,671 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 472 transitions. [2020-08-18 20:59:02,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 20:59:02,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:59:02,674 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:59:02,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:59:02,674 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:59:02,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:59:02,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1088865250, now seen corresponding path program 2 times [2020-08-18 20:59:02,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:59:02,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131250726] [2020-08-18 20:59:02,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:59:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:59:02,737 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:59:02,737 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:59:02,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:59:02,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:59:02 BoogieIcfgContainer [2020-08-18 20:59:02,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:59:02,792 INFO L168 Benchmark]: Toolchain (without parser) took 31221.35 ms. Allocated memory was 140.0 MB in the beginning and 659.6 MB in the end (delta: 519.6 MB). Free memory was 101.0 MB in the beginning and 541.1 MB in the end (delta: -440.0 MB). Peak memory consumption was 79.5 MB. Max. memory is 7.1 GB. [2020-08-18 20:59:02,798 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 20:59:02,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.50 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 100.8 MB in the beginning and 169.6 MB in the end (delta: -68.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-18 20:59:02,800 INFO L168 Benchmark]: Boogie Preprocessor took 95.66 ms. Allocated memory is still 202.4 MB. Free memory was 169.6 MB in the beginning and 164.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-08-18 20:59:02,801 INFO L168 Benchmark]: RCFGBuilder took 1290.55 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 164.7 MB in the beginning and 196.0 MB in the end (delta: -31.3 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. [2020-08-18 20:59:02,803 INFO L168 Benchmark]: TraceAbstraction took 29197.86 ms. Allocated memory was 236.5 MB in the beginning and 659.6 MB in the end (delta: 423.1 MB). Free memory was 196.0 MB in the beginning and 541.1 MB in the end (delta: -345.1 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:59:02,810 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 632.50 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 100.8 MB in the beginning and 169.6 MB in the end (delta: -68.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.66 ms. Allocated memory is still 202.4 MB. Free memory was 169.6 MB in the beginning and 164.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1290.55 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 164.7 MB in the beginning and 196.0 MB in the end (delta: -31.3 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29197.86 ms. Allocated memory was 236.5 MB in the beginning and 659.6 MB in the end (delta: 423.1 MB). Free memory was 196.0 MB in the beginning and 541.1 MB in the end (delta: -345.1 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 869]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L615] int waterLevel = 1; [L616] int methaneLevelCritical = 0; [L712] int pumpRunning = 0; [L713] int systemActive = 1; [L487] int retValue_acc ; [L488] int tmp ; [L492] FCALL select_helpers() [L493] FCALL select_features() [L494] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L546] int splverifierCounter ; [L547] int tmp ; [L548] int tmp___0 ; [L549] int tmp___1 ; [L550] int tmp___2 ; [L553] splverifierCounter = 0 [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND TRUE \read(tmp) [L567] CALL waterRise() [L633] COND TRUE waterLevel < 2 [L634] waterLevel = waterLevel + 1 [L567] RET waterRise() [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND FALSE !(\read(pumpRunning)) [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND TRUE ! pumpRunning [L754] CALL, EXPR isHighWaterLevel() [L846] int retValue_acc ; [L847] int tmp ; [L848] int tmp___0 ; [L852] CALL, EXPR isHighWaterSensorDry() [L695] int retValue_acc ; [L698] COND FALSE !(waterLevel < 2) [L702] retValue_acc = 0 [L703] return (retValue_acc); [L852] RET, EXPR isHighWaterSensorDry() [L852] tmp = isHighWaterSensorDry() [L854] COND FALSE !(\read(tmp)) [L857] tmp___0 = 1 [L859] retValue_acc = tmp___0 [L860] return (retValue_acc); [L754] RET, EXPR isHighWaterLevel() [L754] tmp = isHighWaterLevel() [L756] COND TRUE \read(tmp) [L758] CALL activatePump() [L777] pumpRunning = 1 [L758] RET activatePump() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND TRUE tmp == 0 [L884] CALL, EXPR isPumpRunning() [L801] int retValue_acc ; [L804] retValue_acc = pumpRunning [L805] return (retValue_acc); [L884] RET, EXPR isPumpRunning() [L884] tmp___0 = isPumpRunning() [L886] COND TRUE \read(tmp___0) [L888] CALL __automaton_fail() [L869] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.0s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 24.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 803 SDtfs, 1767 SDslu, 1080 SDs, 0 SdLazy, 5115 SolverSat, 1151 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 13.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=393occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 337 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 763 NumberOfCodeBlocks, 763 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 203130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 66/76 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...