/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:09:27,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:09:27,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:09:27,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:09:27,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:09:27,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:09:27,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:09:27,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:09:27,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:09:27,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:09:27,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:09:27,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:09:27,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:09:27,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:09:27,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:09:27,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:09:27,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:09:27,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:09:27,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:09:27,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:09:27,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:09:27,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:09:27,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:09:27,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:09:27,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:09:27,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:09:27,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:09:27,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:09:27,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:09:27,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:09:27,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:09:27,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:09:27,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:09:27,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:09:27,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:09:27,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:09:27,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:09:27,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:09:27,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:09:27,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:09:27,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:09:27,279 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 04:09:27,315 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:09:27,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:09:27,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:09:27,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:09:27,317 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:09:27,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:09:27,318 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:09:27,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:09:27,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:09:27,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:09:27,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:09:27,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:09:27,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:09:27,320 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:09:27,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:09:27,321 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:09:27,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:09:27,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:09:27,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:09:27,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:09:27,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:09:27,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:09:27,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:09:27,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:09:27,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:09:27,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:09:27,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:09:27,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:09:27,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:09:27,323 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=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:09:27,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:09:27,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:09:27,634 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:09:27,635 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:09:27,636 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:09:27,637 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-08-19 04:09:27,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/567b9e3d0/386d628cd7a64d7da1e96571b2eae4be/FLAGaa002683d [2020-08-19 04:09:28,250 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:09:28,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-08-19 04:09:28,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/567b9e3d0/386d628cd7a64d7da1e96571b2eae4be/FLAGaa002683d [2020-08-19 04:09:28,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/567b9e3d0/386d628cd7a64d7da1e96571b2eae4be [2020-08-19 04:09:28,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:09:28,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:09:28,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:09:28,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:09:28,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:09:28,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:09:28" (1/1) ... [2020-08-19 04:09:28,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4700e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:28, skipping insertion in model container [2020-08-19 04:09:28,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:09:28" (1/1) ... [2020-08-19 04:09:28,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:09:28,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:09:29,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:09:29,121 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:09:29,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:09:29,255 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:09:29,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:29 WrapperNode [2020-08-19 04:09:29,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:09:29,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:09:29,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:09:29,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:09:29,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:29" (1/1) ... [2020-08-19 04:09:29,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:29" (1/1) ... [2020-08-19 04:09:29,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:29" (1/1) ... [2020-08-19 04:09:29,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:29" (1/1) ... [2020-08-19 04:09:29,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:29" (1/1) ... [2020-08-19 04:09:29,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:29" (1/1) ... [2020-08-19 04:09:29,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:29" (1/1) ... [2020-08-19 04:09:29,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:09:29,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:09:29,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:09:29,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:09:29,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:09:29,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:09:29,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:09:29,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:09:29,412 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:09:29,412 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:09:29,412 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:09:29,412 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:09:29,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:09:29,413 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:09:29,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:09:29,414 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:09:29,414 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:09:29,414 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:09:29,415 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 04:09:29,415 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:09:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:09:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:09:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:09:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:09:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:09:29,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:09:29,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 04:09:29,418 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 04:09:29,418 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:09:29,420 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:09:29,421 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:09:29,421 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:09:29,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 04:09:29,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:09:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:09:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:09:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:09:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:09:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:09:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:09:29,422 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:09:29,423 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:09:29,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:09:29,423 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:09:29,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:09:29,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:09:29,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 04:09:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:09:29,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:09:29,424 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:09:29,424 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:09:29,424 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:09:29,424 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:09:29,424 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:09:29,424 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:09:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:09:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:09:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:09:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:09:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:09:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:09:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:09:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:09:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 04:09:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:09:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:09:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:09:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:09:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:09:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 04:09:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:09:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:09:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:09:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 04:09:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:09:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:09:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:09:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:09:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 04:09:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 04:09:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:09:29,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:09:29,431 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:09:29,431 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:09:29,431 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:09:29,431 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:09:29,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:09:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:09:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:09:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:09:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:09:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:09:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:09:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:09:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:09:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:09:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:09:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:09:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:09:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:09:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:09:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:09:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:09:30,512 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:09:30,512 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:09:30,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:09:30 BoogieIcfgContainer [2020-08-19 04:09:30,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:09:30,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:09:30,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:09:30,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:09:30,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:09:28" (1/3) ... [2020-08-19 04:09:30,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3f137c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:09:30, skipping insertion in model container [2020-08-19 04:09:30,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:29" (2/3) ... [2020-08-19 04:09:30,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3f137c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:09:30, skipping insertion in model container [2020-08-19 04:09:30,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:09:30" (3/3) ... [2020-08-19 04:09:30,528 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2020-08-19 04:09:30,539 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:09:30,548 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:09:30,562 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:09:30,588 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:09:30,588 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:09:30,588 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:09:30,589 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:09:30,589 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:09:30,589 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:09:30,589 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:09:30,590 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:09:30,615 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-19 04:09:30,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 04:09:30,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:30,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:09:30,628 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:30,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:30,633 INFO L82 PathProgramCache]: Analyzing trace with hash -645790062, now seen corresponding path program 1 times [2020-08-19 04:09:30,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:30,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140316575] [2020-08-19 04:09:30,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:31,338 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:31,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:31,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:31,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:31,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:31,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:31,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:09:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:31,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:09:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:31,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140316575] [2020-08-19 04:09:31,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:31,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:09:31,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588808868] [2020-08-19 04:09:31,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:09:31,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:31,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:09:31,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:09:31,499 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-08-19 04:09:32,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:32,717 INFO L93 Difference]: Finished difference Result 338 states and 441 transitions. [2020-08-19 04:09:32,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:09:32,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 04:09:32,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:32,734 INFO L225 Difference]: With dead ends: 338 [2020-08-19 04:09:32,734 INFO L226 Difference]: Without dead ends: 182 [2020-08-19 04:09:32,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:09:32,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-19 04:09:32,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-08-19 04:09:32,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-19 04:09:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2020-08-19 04:09:32,847 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 46 [2020-08-19 04:09:32,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:32,848 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2020-08-19 04:09:32,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:09:32,848 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2020-08-19 04:09:32,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 04:09:32,859 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:32,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:09:32,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:09:32,860 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:32,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:32,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1894049218, now seen corresponding path program 1 times [2020-08-19 04:09:32,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:32,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679190575] [2020-08-19 04:09:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:33,241 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:33,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:33,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:33,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:33,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:33,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:33,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:09:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:33,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:09:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:33,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:33,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679190575] [2020-08-19 04:09:33,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:33,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:09:33,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140918425] [2020-08-19 04:09:33,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:09:33,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:33,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:09:33,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:09:33,287 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 4 states. [2020-08-19 04:09:33,702 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:34,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:34,684 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2020-08-19 04:09:34,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:09:34,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 04:09:34,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:34,689 INFO L225 Difference]: With dead ends: 267 [2020-08-19 04:09:34,689 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 04:09:34,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:09:34,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 04:09:34,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-19 04:09:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-19 04:09:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-19 04:09:34,753 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 47 [2020-08-19 04:09:34,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:34,754 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-19 04:09:34,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:09:34,754 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-19 04:09:34,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 04:09:34,756 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:34,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:09:34,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:09:34,757 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:34,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:34,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1275657422, now seen corresponding path program 1 times [2020-08-19 04:09:34,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:34,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659493131] [2020-08-19 04:09:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:35,074 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:35,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:35,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:35,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:35,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:35,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:35,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:09:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:35,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:09:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:35,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:35,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659493131] [2020-08-19 04:09:35,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:35,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:09:35,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854985665] [2020-08-19 04:09:35,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:09:35,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:35,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:09:35,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:09:35,181 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 8 states. [2020-08-19 04:09:35,554 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:35,891 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:36,125 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:36,356 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:37,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:37,674 INFO L93 Difference]: Finished difference Result 280 states and 346 transitions. [2020-08-19 04:09:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:09:37,681 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-19 04:09:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:37,684 INFO L225 Difference]: With dead ends: 280 [2020-08-19 04:09:37,684 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 04:09:37,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:09:37,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 04:09:37,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-19 04:09:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-19 04:09:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2020-08-19 04:09:37,731 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 52 [2020-08-19 04:09:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:37,731 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2020-08-19 04:09:37,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:09:37,732 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2020-08-19 04:09:37,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 04:09:37,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:37,733 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] [2020-08-19 04:09:37,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:09:37,734 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:37,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:37,734 INFO L82 PathProgramCache]: Analyzing trace with hash 120986168, now seen corresponding path program 1 times [2020-08-19 04:09:37,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:37,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429421789] [2020-08-19 04:09:37,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:38,046 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:38,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:38,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:38,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:38,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:38,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:38,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:09:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:38,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:38,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:38,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:38,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 04:09:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:38,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 04:09:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:38,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429421789] [2020-08-19 04:09:38,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:38,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:09:38,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234800615] [2020-08-19 04:09:38,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:09:38,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:38,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:09:38,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:09:38,151 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand 6 states. [2020-08-19 04:09:38,481 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:39,651 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:40,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:40,393 INFO L93 Difference]: Finished difference Result 383 states and 475 transitions. [2020-08-19 04:09:40,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:09:40,394 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-19 04:09:40,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:40,398 INFO L225 Difference]: With dead ends: 383 [2020-08-19 04:09:40,398 INFO L226 Difference]: Without dead ends: 269 [2020-08-19 04:09:40,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:09:40,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-08-19 04:09:40,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 226. [2020-08-19 04:09:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-08-19 04:09:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 256 transitions. [2020-08-19 04:09:40,458 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 256 transitions. Word has length 70 [2020-08-19 04:09:40,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:40,459 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 256 transitions. [2020-08-19 04:09:40,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:09:40,459 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 256 transitions. [2020-08-19 04:09:40,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 04:09:40,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:40,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:09:40,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:09:40,461 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:40,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:40,461 INFO L82 PathProgramCache]: Analyzing trace with hash 89608959, now seen corresponding path program 1 times [2020-08-19 04:09:40,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:40,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084587714] [2020-08-19 04:09:40,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,759 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:40,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:09:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:09:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:09:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 04:09:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 04:09:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:40,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084587714] [2020-08-19 04:09:40,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:40,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:09:40,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061010648] [2020-08-19 04:09:40,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:09:40,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:40,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:09:40,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:09:40,917 INFO L87 Difference]: Start difference. First operand 226 states and 256 transitions. Second operand 10 states. [2020-08-19 04:09:41,362 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:41,600 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:41,824 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:42,465 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:42,708 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:42,949 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:44,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:44,118 INFO L93 Difference]: Finished difference Result 472 states and 571 transitions. [2020-08-19 04:09:44,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:09:44,119 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-19 04:09:44,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:44,121 INFO L225 Difference]: With dead ends: 472 [2020-08-19 04:09:44,122 INFO L226 Difference]: Without dead ends: 270 [2020-08-19 04:09:44,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:09:44,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-08-19 04:09:44,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 230. [2020-08-19 04:09:44,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-08-19 04:09:44,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 260 transitions. [2020-08-19 04:09:44,173 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 260 transitions. Word has length 84 [2020-08-19 04:09:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:44,173 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 260 transitions. [2020-08-19 04:09:44,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:09:44,174 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 260 transitions. [2020-08-19 04:09:44,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 04:09:44,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:44,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:09:44,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:09:44,175 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:44,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:44,175 INFO L82 PathProgramCache]: Analyzing trace with hash -611990915, now seen corresponding path program 1 times [2020-08-19 04:09:44,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:44,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109747924] [2020-08-19 04:09:44,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:44,455 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:44,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:44,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:44,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:44,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:44,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:44,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:09:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:44,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:44,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:44,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:44,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:09:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:44,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:09:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:44,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 04:09:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:44,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 04:09:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:44,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:44,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109747924] [2020-08-19 04:09:44,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:44,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:09:44,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85056832] [2020-08-19 04:09:44,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:09:44,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:44,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:09:44,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:09:44,609 INFO L87 Difference]: Start difference. First operand 230 states and 260 transitions. Second operand 8 states. [2020-08-19 04:09:44,967 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:46,180 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:46,451 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:46,691 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:46,911 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:47,232 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:48,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:48,522 INFO L93 Difference]: Finished difference Result 688 states and 836 transitions. [2020-08-19 04:09:48,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:09:48,523 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-19 04:09:48,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:48,527 INFO L225 Difference]: With dead ends: 688 [2020-08-19 04:09:48,527 INFO L226 Difference]: Without dead ends: 482 [2020-08-19 04:09:48,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:09:48,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-08-19 04:09:48,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 415. [2020-08-19 04:09:48,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-19 04:09:48,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 470 transitions. [2020-08-19 04:09:48,613 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 470 transitions. Word has length 84 [2020-08-19 04:09:48,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:48,614 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 470 transitions. [2020-08-19 04:09:48,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:09:48,614 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 470 transitions. [2020-08-19 04:09:48,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 04:09:48,615 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:48,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:09:48,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:09:48,616 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:48,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:48,616 INFO L82 PathProgramCache]: Analyzing trace with hash 885407033, now seen corresponding path program 1 times [2020-08-19 04:09:48,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:48,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416947793] [2020-08-19 04:09:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:48,978 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:48,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:49,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:49,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:49,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:49,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:49,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:09:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:49,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:09:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:49,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:49,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:49,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:49,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:09:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:49,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:09:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:49,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 04:09:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:49,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 04:09:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:49,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416947793] [2020-08-19 04:09:49,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:49,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:09:49,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248172123] [2020-08-19 04:09:49,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:09:49,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:49,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:09:49,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:09:49,111 INFO L87 Difference]: Start difference. First operand 415 states and 470 transitions. Second operand 9 states. [2020-08-19 04:09:49,524 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:50,610 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:50,835 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:51,100 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:51,350 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:51,601 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:52,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:52,540 INFO L93 Difference]: Finished difference Result 524 states and 650 transitions. [2020-08-19 04:09:52,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 04:09:52,541 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-19 04:09:52,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:52,546 INFO L225 Difference]: With dead ends: 524 [2020-08-19 04:09:52,546 INFO L226 Difference]: Without dead ends: 521 [2020-08-19 04:09:52,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 04:09:52,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-08-19 04:09:52,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 415. [2020-08-19 04:09:52,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-19 04:09:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 469 transitions. [2020-08-19 04:09:52,635 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 469 transitions. Word has length 88 [2020-08-19 04:09:52,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:52,635 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 469 transitions. [2020-08-19 04:09:52,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:09:52,636 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 469 transitions. [2020-08-19 04:09:52,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 04:09:52,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:52,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:09:52,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:09:52,652 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:52,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:52,653 INFO L82 PathProgramCache]: Analyzing trace with hash -856284930, now seen corresponding path program 1 times [2020-08-19 04:09:52,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:52,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581351430] [2020-08-19 04:09:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:52,903 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:52,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:52,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:52,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:52,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:52,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:52,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:09:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:52,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:09:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:52,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:53,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:09:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:53,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:09:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:53,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 04:09:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:53,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 04:09:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:53,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581351430] [2020-08-19 04:09:53,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:53,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:09:53,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805966960] [2020-08-19 04:09:53,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:09:53,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:53,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:09:53,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:09:53,036 INFO L87 Difference]: Start difference. First operand 415 states and 469 transitions. Second operand 9 states. [2020-08-19 04:09:53,934 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:54,166 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:09:54,393 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:54,622 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:55,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:55,842 INFO L93 Difference]: Finished difference Result 916 states and 1112 transitions. [2020-08-19 04:09:55,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:09:55,843 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-08-19 04:09:55,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:55,849 INFO L225 Difference]: With dead ends: 916 [2020-08-19 04:09:55,850 INFO L226 Difference]: Without dead ends: 525 [2020-08-19 04:09:55,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:09:55,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-08-19 04:09:55,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 425. [2020-08-19 04:09:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-08-19 04:09:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 479 transitions. [2020-08-19 04:09:55,948 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 479 transitions. Word has length 89 [2020-08-19 04:09:55,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:55,948 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 479 transitions. [2020-08-19 04:09:55,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:09:55,948 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 479 transitions. [2020-08-19 04:09:55,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 04:09:55,951 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:55,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:09:55,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:09:55,952 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:55,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:55,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1368774939, now seen corresponding path program 1 times [2020-08-19 04:09:55,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:55,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120607850] [2020-08-19 04:09:55,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,194 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:56,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:09:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:09:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:09:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:09:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 04:09:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 04:09:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:56,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120607850] [2020-08-19 04:09:56,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:56,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 04:09:56,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883069370] [2020-08-19 04:09:56,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 04:09:56,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:56,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 04:09:56,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:09:56,344 INFO L87 Difference]: Start difference. First operand 425 states and 479 transitions. Second operand 7 states. [2020-08-19 04:09:56,682 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:57,179 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:59,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:59,651 INFO L93 Difference]: Finished difference Result 1286 states and 1638 transitions. [2020-08-19 04:09:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:09:59,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-08-19 04:09:59,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:59,659 INFO L225 Difference]: With dead ends: 1286 [2020-08-19 04:09:59,660 INFO L226 Difference]: Without dead ends: 885 [2020-08-19 04:09:59,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:09:59,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-08-19 04:09:59,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 765. [2020-08-19 04:09:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-08-19 04:09:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 897 transitions. [2020-08-19 04:09:59,900 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 897 transitions. Word has length 89 [2020-08-19 04:09:59,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:59,903 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 897 transitions. [2020-08-19 04:09:59,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 04:09:59,903 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 897 transitions. [2020-08-19 04:09:59,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 04:09:59,910 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:59,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:09:59,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:09:59,911 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:59,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:59,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1535755999, now seen corresponding path program 1 times [2020-08-19 04:09:59,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:59,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599565279] [2020-08-19 04:09:59,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:09:59,976 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:09:59,977 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:09:59,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:10:00,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:10:00 BoogieIcfgContainer [2020-08-19 04:10:00,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:10:00,030 INFO L168 Benchmark]: Toolchain (without parser) took 31462.18 ms. Allocated memory was 140.0 MB in the beginning and 642.3 MB in the end (delta: 502.3 MB). Free memory was 101.7 MB in the beginning and 358.6 MB in the end (delta: -256.9 MB). Peak memory consumption was 245.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:10:00,031 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 04:10:00,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.48 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 171.1 MB in the end (delta: -69.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-08-19 04:10:00,041 INFO L168 Benchmark]: Boogie Preprocessor took 92.72 ms. Allocated memory is still 203.9 MB. Free memory was 171.1 MB in the beginning and 167.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 04:10:00,042 INFO L168 Benchmark]: RCFGBuilder took 1169.15 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 167.1 MB in the beginning and 195.1 MB in the end (delta: -28.0 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-08-19 04:10:00,043 INFO L168 Benchmark]: TraceAbstraction took 29504.87 ms. Allocated memory was 237.5 MB in the beginning and 642.3 MB in the end (delta: 404.8 MB). Free memory was 195.1 MB in the beginning and 358.6 MB in the end (delta: -163.5 MB). Peak memory consumption was 241.2 MB. Max. memory is 7.1 GB. [2020-08-19 04:10:00,050 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 689.48 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 171.1 MB in the end (delta: -69.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.72 ms. Allocated memory is still 203.9 MB. Free memory was 171.1 MB in the beginning and 167.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1169.15 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 167.1 MB in the beginning and 195.1 MB in the end (delta: -28.0 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29504.87 ms. Allocated memory was 237.5 MB in the beginning and 642.3 MB in the end (delta: 404.8 MB). Free memory was 195.1 MB in the beginning and 358.6 MB in the end (delta: -163.5 MB). Peak memory consumption was 241.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 216]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L691] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L889] int waterLevel = 1; [L890] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L487] int retValue_acc ; [L490] retValue_acc = 1 [L491] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L146] int splverifierCounter ; [L147] int tmp ; [L148] int tmp___0 ; [L149] int tmp___1 ; [L150] int tmp___2 ; [L153] splverifierCounter = 0 [L155] COND TRUE 1 [L157] COND TRUE splverifierCounter < 4 [L163] tmp = __VERIFIER_nondet_int() [L165] COND TRUE \read(tmp) [L167] CALL waterRise() [L907] COND TRUE waterLevel < 2 [L908] waterLevel = waterLevel + 1 [L167] RET waterRise() [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp___0) [L177] CALL changeMethaneLevel() [L919] COND FALSE !(\read(methaneLevelCritical)) [L922] methaneLevelCritical = 1 [L177] RET changeMethaneLevel() [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___2)) [L191] tmp___1 = __VERIFIER_nondet_int() [L193] COND TRUE \read(tmp___1) [L200] CALL timeShift() [L237] COND FALSE !(\read(pumpRunning)) [L244] COND TRUE \read(systemActive) [L246] CALL processEnvironment() [L318] int tmp ; [L321] COND FALSE !(\read(pumpRunning)) [L336] CALL processEnvironment__wrappee__lowWaterSensor() [L292] int tmp ; [L295] COND FALSE !(\read(pumpRunning)) [L310] CALL processEnvironment__wrappee__highWaterSensor() [L266] int tmp ; [L269] COND TRUE ! pumpRunning [L271] CALL, EXPR isHighWaterLevel() [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; [L421] CALL, EXPR isHighWaterSensorDry() [L969] int retValue_acc ; [L972] COND FALSE !(waterLevel < 2) [L976] retValue_acc = 0 [L977] return (retValue_acc); [L421] RET, EXPR isHighWaterSensorDry() [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); [L271] RET, EXPR isHighWaterLevel() [L271] tmp = isHighWaterLevel() [L273] COND TRUE \read(tmp) [L275] CALL activatePump() [L346] pumpRunning = 1 [L275] RET activatePump() [L310] RET processEnvironment__wrappee__highWaterSensor() [L336] RET processEnvironment__wrappee__lowWaterSensor() [L246] RET processEnvironment() [L252] CALL __utac_acc__Specification1_spec__1() [L497] int tmp ; [L498] int tmp___0 ; [L502] CALL, EXPR isMethaneLevelCritical() [L928] int retValue_acc ; [L931] retValue_acc = methaneLevelCritical [L932] return (retValue_acc); [L502] RET, EXPR isMethaneLevelCritical() [L502] tmp = isMethaneLevelCritical() [L504] COND TRUE \read(tmp) [L506] CALL, EXPR isPumpRunning() [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); [L506] RET, EXPR isPumpRunning() [L506] tmp___0 = isPumpRunning() [L508] COND TRUE \read(tmp___0) [L510] CALL __automaton_fail() [L216] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 249 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 24.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1217 SDtfs, 2058 SDslu, 1103 SDs, 0 SdLazy, 5509 SolverSat, 1361 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 237 SyntacticMatches, 5 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=765occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 567 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 742 NumberOfCodeBlocks, 742 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 640 ConstructedInterpolants, 0 QuantifiedInterpolants, 202853 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...