/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=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:20:58,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:20:58,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:20:58,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:20:58,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:20:58,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:20:58,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:20:58,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:20:58,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:20:58,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:20:58,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:20:58,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:20:58,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:20:58,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:20:58,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:20:58,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:20:58,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:20:58,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:20:58,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:20:58,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:20:58,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:20:58,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:20:58,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:20:58,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:20:58,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:20:58,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:20:58,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:20:58,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:20:58,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:20:58,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:20:58,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:20:58,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:20:58,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:20:58,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:20:58,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:20:58,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:20:58,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:20:58,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:20:58,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:20:58,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:20:58,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:20:58,238 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 03:20:58,283 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:20:58,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:20:58,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:20:58,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:20:58,286 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:20:58,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:20:58,286 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:20:58,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:20:58,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:20:58,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:20:58,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:20:58,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:20:58,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:20:58,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:20:58,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:20:58,289 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:20:58,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:20:58,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:20:58,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:20:58,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:20:58,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:20:58,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:20:58,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:20:58,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:20:58,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:20:58,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:20:58,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:20:58,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:20:58,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:20:58,292 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=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:20:58,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:20:58,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:20:58,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:20:58,640 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:20:58,640 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:20:58,641 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-08-19 03:20:58,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2cdb4e13/4a1749881e404311a60444a1b104906d/FLAG5cb08dc32 [2020-08-19 03:20:59,208 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:20:59,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-08-19 03:20:59,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2cdb4e13/4a1749881e404311a60444a1b104906d/FLAG5cb08dc32 [2020-08-19 03:20:59,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2cdb4e13/4a1749881e404311a60444a1b104906d [2020-08-19 03:20:59,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:20:59,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:20:59,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:20:59,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:20:59,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:20:59,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:20:59" (1/1) ... [2020-08-19 03:20:59,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63e54808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:59, skipping insertion in model container [2020-08-19 03:20:59,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:20:59" (1/1) ... [2020-08-19 03:20:59,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:20:59,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:21:00,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:21:00,078 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:21:00,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:21:00,214 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:21:00,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:00 WrapperNode [2020-08-19 03:21:00,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:21:00,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:21:00,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:21:00,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:21:00,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:00" (1/1) ... [2020-08-19 03:21:00,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:00" (1/1) ... [2020-08-19 03:21:00,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:00" (1/1) ... [2020-08-19 03:21:00,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:00" (1/1) ... [2020-08-19 03:21:00,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:00" (1/1) ... [2020-08-19 03:21:00,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:00" (1/1) ... [2020-08-19 03:21:00,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:00" (1/1) ... [2020-08-19 03:21:00,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:21:00,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:21:00,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:21:00,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:21:00,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:00" (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 03:21:00,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:21:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:21:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:21:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:21:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:21:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:21:00,398 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:21:00,398 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:21:00,398 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:21:00,399 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 03:21:00,399 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:21:00,399 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 03:21:00,399 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:21:00,400 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:21:00,400 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:21:00,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:21:00,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:21:00,401 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:21:00,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 03:21:00,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 03:21:00,401 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 03:21:00,402 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:21:00,402 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:21:00,402 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:21:00,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:21:00,403 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:21:00,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:21:00,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 03:21:00,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 03:21:00,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:21:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:21:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:21:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:21:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:21:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:21:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 03:21:00,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:21:00,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:21:00,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:21:00,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:21:00,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:21:00,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:21:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:21:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:21:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:21:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:21:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:21:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:21:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:21:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:21:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:21:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 03:21:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:21:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:21:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:21:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:21:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:21:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:21:00,415 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 03:21:00,415 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 03:21:00,415 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:21:00,415 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:21:00,415 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:21:00,415 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:21:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 03:21:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:21:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 03:21:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 03:21:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:21:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 03:21:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 03:21:00,417 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:21:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:21:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:21:00,419 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:21:00,419 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:21:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:21:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:21:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:21:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:21:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:21:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:21:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:21:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:21:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:21:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:21:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:21:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:21:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:21:00,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:21:00,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:21:00,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:21:01,452 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:21:01,453 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:21:01,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:21:01 BoogieIcfgContainer [2020-08-19 03:21:01,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:21:01,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:21:01,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:21:01,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:21:01,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:20:59" (1/3) ... [2020-08-19 03:21:01,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f954d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:21:01, skipping insertion in model container [2020-08-19 03:21:01,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:21:00" (2/3) ... [2020-08-19 03:21:01,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f954d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:21:01, skipping insertion in model container [2020-08-19 03:21:01,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:21:01" (3/3) ... [2020-08-19 03:21:01,467 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2020-08-19 03:21:01,478 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:21:01,486 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:21:01,500 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:21:01,526 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:21:01,527 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:21:01,527 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:21:01,527 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:21:01,528 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:21:01,528 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:21:01,528 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:21:01,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:21:01,552 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-19 03:21:01,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 03:21:01,563 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:01,564 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 03:21:01,564 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:01,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:01,571 INFO L82 PathProgramCache]: Analyzing trace with hash 616057763, now seen corresponding path program 1 times [2020-08-19 03:21:01,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:01,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812449719] [2020-08-19 03:21:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:02,201 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:02,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:02,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:02,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:02,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:02,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:02,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:21:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:02,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:21:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:02,308 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 03:21:02,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812449719] [2020-08-19 03:21:02,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:02,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:21:02,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137035949] [2020-08-19 03:21:02,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:21:02,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:02,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:21:02,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:21:02,340 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2020-08-19 03:21:03,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:03,617 INFO L93 Difference]: Finished difference Result 343 states and 450 transitions. [2020-08-19 03:21:03,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:21:03,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 03:21:03,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:03,637 INFO L225 Difference]: With dead ends: 343 [2020-08-19 03:21:03,637 INFO L226 Difference]: Without dead ends: 185 [2020-08-19 03:21:03,643 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 03:21:03,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-19 03:21:03,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 149. [2020-08-19 03:21:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-19 03:21:03,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2020-08-19 03:21:03,754 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 46 [2020-08-19 03:21:03,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:03,755 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2020-08-19 03:21:03,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:21:03,755 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2020-08-19 03:21:03,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 03:21:03,759 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:03,760 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 03:21:03,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:21:03,760 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:03,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:03,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2016430514, now seen corresponding path program 1 times [2020-08-19 03:21:03,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:03,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484722710] [2020-08-19 03:21:03,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:04,116 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:04,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:04,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:04,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:04,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:04,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:04,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:21:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:04,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:21:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:04,168 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 03:21:04,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484722710] [2020-08-19 03:21:04,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:04,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:21:04,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164871969] [2020-08-19 03:21:04,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:21:04,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:04,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:21:04,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:21:04,172 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand 4 states. [2020-08-19 03:21:04,594 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:05,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:05,659 INFO L93 Difference]: Finished difference Result 270 states and 333 transitions. [2020-08-19 03:21:05,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:21:05,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 03:21:05,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:05,663 INFO L225 Difference]: With dead ends: 270 [2020-08-19 03:21:05,663 INFO L226 Difference]: Without dead ends: 169 [2020-08-19 03:21:05,665 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 03:21:05,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-19 03:21:05,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 140. [2020-08-19 03:21:05,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-19 03:21:05,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 166 transitions. [2020-08-19 03:21:05,708 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 166 transitions. Word has length 47 [2020-08-19 03:21:05,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:05,708 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 166 transitions. [2020-08-19 03:21:05,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:21:05,708 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 166 transitions. [2020-08-19 03:21:05,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 03:21:05,711 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:05,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:21:05,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:21:05,712 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:05,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:05,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1603631393, now seen corresponding path program 1 times [2020-08-19 03:21:05,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:05,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868617341] [2020-08-19 03:21:05,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:06,011 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:06,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:06,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:06,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:06,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:06,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:06,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:21:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:06,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:21:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:06,109 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 03:21:06,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868617341] [2020-08-19 03:21:06,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:06,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:21:06,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111069917] [2020-08-19 03:21:06,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:21:06,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:06,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:21:06,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:21:06,112 INFO L87 Difference]: Start difference. First operand 140 states and 166 transitions. Second operand 8 states. [2020-08-19 03:21:06,458 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:06,793 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:07,033 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:07,255 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:07,941 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:10,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:10,002 INFO L93 Difference]: Finished difference Result 476 states and 596 transitions. [2020-08-19 03:21:10,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:21:10,006 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 03:21:10,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:10,014 INFO L225 Difference]: With dead ends: 476 [2020-08-19 03:21:10,014 INFO L226 Difference]: Without dead ends: 360 [2020-08-19 03:21:10,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:21:10,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-19 03:21:10,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 298. [2020-08-19 03:21:10,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-08-19 03:21:10,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 364 transitions. [2020-08-19 03:21:10,118 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 364 transitions. Word has length 51 [2020-08-19 03:21:10,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:10,119 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 364 transitions. [2020-08-19 03:21:10,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:21:10,119 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 364 transitions. [2020-08-19 03:21:10,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 03:21:10,122 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:10,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:21:10,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:21:10,123 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:10,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:10,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1180849517, now seen corresponding path program 1 times [2020-08-19 03:21:10,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:10,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332775596] [2020-08-19 03:21:10,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:10,440 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:10,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:10,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:10,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:10,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:10,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:21:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:10,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:21:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:10,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 03:21:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:10,559 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 03:21:10,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332775596] [2020-08-19 03:21:10,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:10,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:21:10,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285270461] [2020-08-19 03:21:10,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:21:10,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:10,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:21:10,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:21:10,561 INFO L87 Difference]: Start difference. First operand 298 states and 364 transitions. Second operand 8 states. [2020-08-19 03:21:10,891 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:11,756 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:12,198 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:12,519 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:12,777 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:13,350 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:14,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:14,436 INFO L93 Difference]: Finished difference Result 960 states and 1249 transitions. [2020-08-19 03:21:14,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:21:14,437 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 03:21:14,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:14,444 INFO L225 Difference]: With dead ends: 960 [2020-08-19 03:21:14,444 INFO L226 Difference]: Without dead ends: 686 [2020-08-19 03:21:14,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 03:21:14,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-08-19 03:21:14,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 551. [2020-08-19 03:21:14,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-08-19 03:21:14,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 678 transitions. [2020-08-19 03:21:14,562 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 678 transitions. Word has length 57 [2020-08-19 03:21:14,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:14,563 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 678 transitions. [2020-08-19 03:21:14,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:21:14,563 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 678 transitions. [2020-08-19 03:21:14,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 03:21:14,566 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:14,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:21:14,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:21:14,567 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:14,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:14,568 INFO L82 PathProgramCache]: Analyzing trace with hash -687352489, now seen corresponding path program 1 times [2020-08-19 03:21:14,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:14,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585503152] [2020-08-19 03:21:14,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,861 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:14,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:21:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:21:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:21:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 03:21:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:14,976 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 03:21:14,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585503152] [2020-08-19 03:21:14,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:14,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:21:15,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435262820] [2020-08-19 03:21:15,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:21:15,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:15,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:21:15,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:21:15,005 INFO L87 Difference]: Start difference. First operand 551 states and 678 transitions. Second operand 9 states. [2020-08-19 03:21:15,345 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:16,259 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:16,548 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:16,821 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:17,417 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:17,711 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:18,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:18,860 INFO L93 Difference]: Finished difference Result 1523 states and 2048 transitions. [2020-08-19 03:21:18,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 03:21:18,861 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-19 03:21:18,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:18,869 INFO L225 Difference]: With dead ends: 1523 [2020-08-19 03:21:18,870 INFO L226 Difference]: Without dead ends: 996 [2020-08-19 03:21:18,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 03:21:18,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2020-08-19 03:21:19,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 815. [2020-08-19 03:21:19,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-08-19 03:21:19,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1007 transitions. [2020-08-19 03:21:19,022 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1007 transitions. Word has length 61 [2020-08-19 03:21:19,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:19,022 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1007 transitions. [2020-08-19 03:21:19,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:21:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1007 transitions. [2020-08-19 03:21:19,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 03:21:19,025 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:19,025 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 03:21:19,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:21:19,026 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:19,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:19,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1185420344, now seen corresponding path program 1 times [2020-08-19 03:21:19,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:19,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626880765] [2020-08-19 03:21:19,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,264 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:19,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:21:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:21:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:21:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 03:21:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 03:21:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:19,461 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 03:21:19,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626880765] [2020-08-19 03:21:19,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:19,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:21:19,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363796169] [2020-08-19 03:21:19,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:21:19,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:19,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:21:19,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:21:19,465 INFO L87 Difference]: Start difference. First operand 815 states and 1007 transitions. Second operand 9 states. [2020-08-19 03:21:20,489 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:20,757 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:21:21,056 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:21,294 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:22,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:22,416 INFO L93 Difference]: Finished difference Result 1863 states and 2473 transitions. [2020-08-19 03:21:22,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:21:22,417 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-19 03:21:22,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:22,427 INFO L225 Difference]: With dead ends: 1863 [2020-08-19 03:21:22,428 INFO L226 Difference]: Without dead ends: 1072 [2020-08-19 03:21:22,432 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 03:21:22,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2020-08-19 03:21:22,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 841. [2020-08-19 03:21:22,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2020-08-19 03:21:22,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1035 transitions. [2020-08-19 03:21:22,608 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1035 transitions. Word has length 88 [2020-08-19 03:21:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:22,609 INFO L479 AbstractCegarLoop]: Abstraction has 841 states and 1035 transitions. [2020-08-19 03:21:22,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:21:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1035 transitions. [2020-08-19 03:21:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 03:21:22,612 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:22,612 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 03:21:22,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:21:22,613 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:22,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:22,614 INFO L82 PathProgramCache]: Analyzing trace with hash -910660730, now seen corresponding path program 1 times [2020-08-19 03:21:22,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:22,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833371342] [2020-08-19 03:21:22,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:22,926 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:22,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:22,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:22,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:22,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:22,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:22,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:21:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:22,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:21:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:22,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:22,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:22,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:23,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:23,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:21:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:23,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 03:21:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:23,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 03:21:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:23,050 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 03:21:23,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833371342] [2020-08-19 03:21:23,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:23,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 03:21:23,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932674127] [2020-08-19 03:21:23,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:21:23,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:23,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:21:23,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:21:23,053 INFO L87 Difference]: Start difference. First operand 841 states and 1035 transitions. Second operand 11 states. [2020-08-19 03:21:23,593 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:23,832 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:24,058 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:24,776 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:25,051 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:25,308 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:26,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:26,678 INFO L93 Difference]: Finished difference Result 1917 states and 2592 transitions. [2020-08-19 03:21:26,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:21:26,678 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-08-19 03:21:26,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:26,686 INFO L225 Difference]: With dead ends: 1917 [2020-08-19 03:21:26,686 INFO L226 Difference]: Without dead ends: 1100 [2020-08-19 03:21:26,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:21:26,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-08-19 03:21:26,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 857. [2020-08-19 03:21:26,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2020-08-19 03:21:26,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1051 transitions. [2020-08-19 03:21:26,888 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1051 transitions. Word has length 88 [2020-08-19 03:21:26,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:26,889 INFO L479 AbstractCegarLoop]: Abstraction has 857 states and 1051 transitions. [2020-08-19 03:21:26,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:21:26,889 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1051 transitions. [2020-08-19 03:21:26,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 03:21:26,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:26,891 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 03:21:26,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:21:26,891 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:26,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:26,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1039639525, now seen corresponding path program 1 times [2020-08-19 03:21:26,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:26,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067246786] [2020-08-19 03:21:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:27,147 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:27,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:27,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:27,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:27,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:27,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:27,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:21:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:27,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:21:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:27,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:27,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:27,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:27,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:27,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:21:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:27,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 03:21:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:27,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 03:21:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:27,312 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 03:21:27,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067246786] [2020-08-19 03:21:27,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:27,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 03:21:27,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898849663] [2020-08-19 03:21:27,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:21:27,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:27,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:21:27,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:21:27,316 INFO L87 Difference]: Start difference. First operand 857 states and 1051 transitions. Second operand 7 states. [2020-08-19 03:21:27,772 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:28,258 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:30,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:30,910 INFO L93 Difference]: Finished difference Result 2846 states and 3865 transitions. [2020-08-19 03:21:30,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:21:30,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-08-19 03:21:30,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:30,923 INFO L225 Difference]: With dead ends: 2846 [2020-08-19 03:21:30,923 INFO L226 Difference]: Without dead ends: 2013 [2020-08-19 03:21:30,926 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 03:21:30,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2020-08-19 03:21:31,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1711. [2020-08-19 03:21:31,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1711 states. [2020-08-19 03:21:31,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2117 transitions. [2020-08-19 03:21:31,314 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2117 transitions. Word has length 88 [2020-08-19 03:21:31,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:31,315 INFO L479 AbstractCegarLoop]: Abstraction has 1711 states and 2117 transitions. [2020-08-19 03:21:31,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:21:31,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2117 transitions. [2020-08-19 03:21:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 03:21:31,318 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:31,318 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] [2020-08-19 03:21:31,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:21:31,318 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:31,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:31,319 INFO L82 PathProgramCache]: Analyzing trace with hash 745790239, now seen corresponding path program 1 times [2020-08-19 03:21:31,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:31,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151525558] [2020-08-19 03:21:31,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:21:31,393 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:21:31,393 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:21:31,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:21:31,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:21:31 BoogieIcfgContainer [2020-08-19 03:21:31,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:21:31,435 INFO L168 Benchmark]: Toolchain (without parser) took 31923.42 ms. Allocated memory was 147.3 MB in the beginning and 628.6 MB in the end (delta: 481.3 MB). Free memory was 100.9 MB in the beginning and 325.6 MB in the end (delta: -224.6 MB). Peak memory consumption was 256.7 MB. Max. memory is 7.1 GB. [2020-08-19 03:21:31,436 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-19 03:21:31,440 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.75 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 100.9 MB in the beginning and 171.9 MB in the end (delta: -71.0 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-08-19 03:21:31,446 INFO L168 Benchmark]: Boogie Preprocessor took 94.72 ms. Allocated memory is still 203.4 MB. Free memory was 171.9 MB in the beginning and 167.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-08-19 03:21:31,447 INFO L168 Benchmark]: RCFGBuilder took 1147.68 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 167.0 MB in the beginning and 195.3 MB in the end (delta: -28.3 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:21:31,448 INFO L168 Benchmark]: TraceAbstraction took 29973.68 ms. Allocated memory was 237.0 MB in the beginning and 628.6 MB in the end (delta: 391.6 MB). Free memory was 195.3 MB in the beginning and 325.6 MB in the end (delta: -130.2 MB). Peak memory consumption was 261.4 MB. Max. memory is 7.1 GB. [2020-08-19 03:21:31,456 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 700.75 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 100.9 MB in the beginning and 171.9 MB in the end (delta: -71.0 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.72 ms. Allocated memory is still 203.4 MB. Free memory was 171.9 MB in the beginning and 167.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1147.68 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 167.0 MB in the beginning and 195.3 MB in the end (delta: -28.3 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29973.68 ms. Allocated memory was 237.0 MB in the beginning and 628.6 MB in the end (delta: 391.6 MB). Free memory was 195.3 MB in the beginning and 325.6 MB in the end (delta: -130.2 MB). Peak memory consumption was 261.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 506]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L159] int pumpRunning = 0; [L160] int systemActive = 1; [L399] int waterLevel = 1; [L400] int methaneLevelCritical = 0; [L511] int cleanupTimeShifts = 4; [L802] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L584] int retValue_acc ; [L585] int tmp ; [L589] FCALL select_helpers() [L590] FCALL select_features() [L591] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L591] RET, EXPR valid_product() [L591] tmp = valid_product() [L593] COND TRUE \read(tmp) [L595] FCALL setup() [L596] CALL runTest() [L578] CALL test() [L84] int splverifierCounter ; [L85] int tmp ; [L86] int tmp___0 ; [L87] int tmp___1 ; [L88] int tmp___2 ; [L91] splverifierCounter = 0 [L93] COND TRUE 1 [L95] COND TRUE splverifierCounter < 4 [L101] tmp = __VERIFIER_nondet_int() [L103] COND TRUE \read(tmp) [L105] CALL waterRise() [L417] COND TRUE waterLevel < 2 [L418] waterLevel = waterLevel + 1 [L105] RET waterRise() [L111] tmp___0 = __VERIFIER_nondet_int() [L113] COND TRUE \read(tmp___0) [L115] CALL changeMethaneLevel() [L429] COND FALSE !(\read(methaneLevelCritical)) [L432] methaneLevelCritical = 1 [L115] RET changeMethaneLevel() [L121] tmp___2 = __VERIFIER_nondet_int() [L123] COND TRUE \read(tmp___2) [L138] CALL timeShift() [L167] COND FALSE !(\read(pumpRunning)) [L174] COND TRUE \read(systemActive) [L176] CALL processEnvironment() [L248] int tmp ; [L251] COND FALSE !(\read(pumpRunning)) [L266] CALL processEnvironment__wrappee__lowWaterSensor() [L222] int tmp ; [L225] COND FALSE !(\read(pumpRunning)) [L240] CALL processEnvironment__wrappee__highWaterSensor() [L196] int tmp ; [L199] COND TRUE ! pumpRunning [L201] CALL, EXPR isHighWaterLevel() [L345] int retValue_acc ; [L346] int tmp ; [L347] int tmp___0 ; [L351] CALL, EXPR isHighWaterSensorDry() [L479] int retValue_acc ; [L482] COND FALSE !(waterLevel < 2) [L486] retValue_acc = 0 [L487] return (retValue_acc); [L351] RET, EXPR isHighWaterSensorDry() [L351] tmp = isHighWaterSensorDry() [L353] COND FALSE !(\read(tmp)) [L356] tmp___0 = 1 [L358] retValue_acc = tmp___0 [L359] return (retValue_acc); [L201] RET, EXPR isHighWaterLevel() [L201] tmp = isHighWaterLevel() [L203] COND TRUE \read(tmp) [L205] CALL activatePump() [L276] pumpRunning = 1 [L205] RET activatePump() [L240] RET processEnvironment__wrappee__highWaterSensor() [L266] RET processEnvironment__wrappee__lowWaterSensor() [L176] RET processEnvironment() [L182] CALL __utac_acc__Specification1_spec__1() [L608] int tmp ; [L609] int tmp___0 ; [L613] CALL, EXPR isMethaneLevelCritical() [L438] int retValue_acc ; [L441] retValue_acc = methaneLevelCritical [L442] return (retValue_acc); [L613] RET, EXPR isMethaneLevelCritical() [L613] tmp = isMethaneLevelCritical() [L615] COND TRUE \read(tmp) [L617] CALL, EXPR isPumpRunning() [L300] int retValue_acc ; [L303] retValue_acc = pumpRunning [L304] return (retValue_acc); [L617] RET, EXPR isPumpRunning() [L617] tmp___0 = isPumpRunning() [L619] COND TRUE \read(tmp___0) [L621] CALL __automaton_fail() [L506] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 251 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 24.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1101 SDtfs, 1942 SDslu, 1144 SDs, 0 SdLazy, 5833 SolverSat, 1211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 277 GetRequests, 186 SyntacticMatches, 5 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 8.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1711occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1219 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 618 NumberOfCodeBlocks, 618 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 518 ConstructedInterpolants, 0 QuantifiedInterpolants, 157644 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...