/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=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:10:08,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:10:08,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:10:08,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:10:08,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:10:08,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:10:08,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:10:08,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:10:08,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:10:08,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:10:08,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:10:08,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:10:08,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:10:08,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:10:08,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:10:08,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:10:08,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:10:08,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:10:08,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:10:08,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:10:08,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:10:08,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:10:08,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:10:08,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:10:08,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:10:08,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:10:08,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:10:08,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:10:08,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:10:08,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:10:08,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:10:08,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:10:08,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:10:08,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:10:08,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:10:08,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:10:08,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:10:08,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:10:08,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:10:08,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:10:08,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:10:08,261 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 20:10:08,282 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:10:08,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:10:08,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:10:08,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:10:08,284 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:10:08,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:10:08,284 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:10:08,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:10:08,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:10:08,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:10:08,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:10:08,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:10:08,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:10:08,286 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:10:08,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:10:08,286 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:10:08,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:10:08,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:10:08,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:10:08,287 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:10:08,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:10:08,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:10:08,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:10:08,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:10:08,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:10:08,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:10:08,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:10:08,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:10:08,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:10:08,289 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=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:10:08,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:10:08,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:10:08,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:10:08,602 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:10:08,603 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:10:08,603 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c [2020-08-18 20:10:08,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/592f10d5b/3510b5c55ef6475aba8499a45ecb02b6/FLAG00c0b89a9 [2020-08-18 20:10:09,289 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:10:09,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c [2020-08-18 20:10:09,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/592f10d5b/3510b5c55ef6475aba8499a45ecb02b6/FLAG00c0b89a9 [2020-08-18 20:10:09,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/592f10d5b/3510b5c55ef6475aba8499a45ecb02b6 [2020-08-18 20:10:09,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:10:09,625 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:10:09,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:10:09,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:10:09,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:10:09,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:10:09" (1/1) ... [2020-08-18 20:10:09,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8831ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:09, skipping insertion in model container [2020-08-18 20:10:09,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:10:09" (1/1) ... [2020-08-18 20:10:09,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:10:09,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:10:10,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:10:10,183 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:10:10,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:10:10,300 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:10:10,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:10 WrapperNode [2020-08-18 20:10:10,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:10:10,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:10:10,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:10:10,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:10:10,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:10" (1/1) ... [2020-08-18 20:10:10,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:10" (1/1) ... [2020-08-18 20:10:10,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:10" (1/1) ... [2020-08-18 20:10:10,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:10" (1/1) ... [2020-08-18 20:10:10,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:10" (1/1) ... [2020-08-18 20:10:10,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:10" (1/1) ... [2020-08-18 20:10:10,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:10" (1/1) ... [2020-08-18 20:10:10,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:10:10,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:10:10,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:10:10,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:10:10,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:10:10,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:10:10,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:10:10,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:10:10,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 20:10:10,451 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:10:10,451 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:10:10,451 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:10:10,452 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:10:10,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:10:10,452 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:10:10,453 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:10:10,453 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:10:10,453 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:10:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:10:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:10:10,455 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:10:10,455 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:10:10,455 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:10:10,456 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:10:10,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:10:10,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:10:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:10:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:10:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 20:10:10,457 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:10:10,458 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:10:10,458 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:10:10,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:10:10,460 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:10:10,460 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:10:10,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:10:10,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:10:10,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:10:10,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:10:10,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:10:10,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:10:10,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:10:10,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:10:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:10:10,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:10:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:10:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:10:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:10:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:10:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 20:10:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:10:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:10:10,463 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:10:10,463 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:10:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:10:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:10:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:10:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:10:10,464 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:10:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:10:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:10:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:10:10,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:10:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:10:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 20:10:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:10:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:10:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:10:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:10:10,466 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:10:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:10:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:10:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:10:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:10:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:10:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:10:10,467 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:10:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:10:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:10:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:10:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:10:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:10:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:10:10,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:10:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:10:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:10:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:10:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:10:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:10:10,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:10:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:10:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:10:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:10:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:10:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:10:11,465 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:10:11,465 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:10:11,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:10:11 BoogieIcfgContainer [2020-08-18 20:10:11,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:10:11,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:10:11,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:10:11,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:10:11,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:10:09" (1/3) ... [2020-08-18 20:10:11,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b0d187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:10:11, skipping insertion in model container [2020-08-18 20:10:11,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:10:10" (2/3) ... [2020-08-18 20:10:11,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b0d187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:10:11, skipping insertion in model container [2020-08-18 20:10:11,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:10:11" (3/3) ... [2020-08-18 20:10:11,483 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product34.cil.c [2020-08-18 20:10:11,494 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:10:11,502 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:10:11,514 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:10:11,534 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:10:11,534 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:10:11,534 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:10:11,534 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:10:11,535 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:10:11,535 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:10:11,535 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:10:11,535 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:10:11,554 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-08-18 20:10:11,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 20:10:11,563 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:11,564 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] [2020-08-18 20:10:11,564 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:11,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:11,570 INFO L82 PathProgramCache]: Analyzing trace with hash -368094870, now seen corresponding path program 1 times [2020-08-18 20:10:11,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:11,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357941223] [2020-08-18 20:10:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:12,197 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:12,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:12,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:12,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:12,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:12,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:12,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:10:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:12,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:10:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:10:12,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357941223] [2020-08-18 20:10:12,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:10:12,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:10:12,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501442316] [2020-08-18 20:10:12,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:10:12,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:12,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:10:12,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:10:12,335 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 3 states. [2020-08-18 20:10:13,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:13,368 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-18 20:10:13,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:10:13,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 20:10:13,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:13,384 INFO L225 Difference]: With dead ends: 258 [2020-08-18 20:10:13,385 INFO L226 Difference]: Without dead ends: 140 [2020-08-18 20:10:13,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:10:13,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-18 20:10:13,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-18 20:10:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-18 20:10:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-18 20:10:13,503 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-08-18 20:10:13,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:13,504 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-18 20:10:13,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:10:13,505 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-18 20:10:13,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 20:10:13,509 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:13,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:10:13,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:10:13,510 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:13,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:13,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1630578526, now seen corresponding path program 1 times [2020-08-18 20:10:13,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:13,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714900253] [2020-08-18 20:10:13,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:13,821 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:13,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:13,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:13,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:13,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:13,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:13,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:10:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:13,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:10:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:10:13,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714900253] [2020-08-18 20:10:13,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:10:13,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:10:13,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304363268] [2020-08-18 20:10:13,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:10:13,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:13,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:10:13,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:10:13,893 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-18 20:10:14,288 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:14,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:14,953 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-18 20:10:14,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:10:14,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 20:10:14,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:14,957 INFO L225 Difference]: With dead ends: 187 [2020-08-18 20:10:14,957 INFO L226 Difference]: Without dead ends: 124 [2020-08-18 20:10:14,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:10:14,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-18 20:10:14,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-18 20:10:14,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 20:10:14,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-18 20:10:14,992 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-08-18 20:10:14,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:14,993 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-18 20:10:14,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:10:14,993 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-18 20:10:14,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:10:14,995 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:14,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:10:14,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:10:14,995 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:14,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:14,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1910957979, now seen corresponding path program 1 times [2020-08-18 20:10:14,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:14,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496897798] [2020-08-18 20:10:14,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:15,310 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:15,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:15,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:15,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:15,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:15,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:10:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:15,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:10:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:15,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:10:15,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496897798] [2020-08-18 20:10:15,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:10:15,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:10:15,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913205742] [2020-08-18 20:10:15,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:10:15,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:15,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:10:15,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:10:15,459 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-18 20:10:15,846 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:16,149 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:16,391 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:16,640 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:17,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:17,534 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-18 20:10:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:10:17,535 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 20:10:17,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:17,538 INFO L225 Difference]: With dead ends: 200 [2020-08-18 20:10:17,539 INFO L226 Difference]: Without dead ends: 124 [2020-08-18 20:10:17,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:10:17,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-18 20:10:17,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-18 20:10:17,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 20:10:17,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-18 20:10:17,569 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-08-18 20:10:17,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:17,569 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-18 20:10:17,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:10:17,569 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-18 20:10:17,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 20:10:17,571 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:17,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:10:17,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:10:17,572 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:17,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:17,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2015382800, now seen corresponding path program 1 times [2020-08-18 20:10:17,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:17,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156038183] [2020-08-18 20:10:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:17,854 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:17,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:17,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:17,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:17,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:17,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:17,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:10:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:17,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:17,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 20:10:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:17,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 20:10:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:17,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:10:17,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156038183] [2020-08-18 20:10:17,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:10:17,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:10:17,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771302056] [2020-08-18 20:10:17,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:10:17,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:17,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:10:17,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:10:17,967 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-08-18 20:10:18,266 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:19,321 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:19,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:19,762 INFO L93 Difference]: Finished difference Result 288 states and 356 transitions. [2020-08-18 20:10:19,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:10:19,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-18 20:10:19,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:19,768 INFO L225 Difference]: With dead ends: 288 [2020-08-18 20:10:19,769 INFO L226 Difference]: Without dead ends: 212 [2020-08-18 20:10:19,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:10:19,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-18 20:10:19,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2020-08-18 20:10:19,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-18 20:10:19,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2020-08-18 20:10:19,814 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 60 [2020-08-18 20:10:19,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:19,814 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2020-08-18 20:10:19,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:10:19,815 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2020-08-18 20:10:19,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-18 20:10:19,816 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:19,817 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] [2020-08-18 20:10:19,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:10:19,817 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:19,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:19,817 INFO L82 PathProgramCache]: Analyzing trace with hash -2082850905, now seen corresponding path program 1 times [2020-08-18 20:10:19,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:19,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367401404] [2020-08-18 20:10:19,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:20,189 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:20,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:20,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:20,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:20,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:20,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:20,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:10:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:20,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:20,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:20,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:10:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:20,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:10:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:20,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 20:10:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:10:20,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367401404] [2020-08-18 20:10:20,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:10:20,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:10:20,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830419888] [2020-08-18 20:10:20,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:10:20,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:20,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:10:20,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:10:20,349 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand 12 states. [2020-08-18 20:10:20,941 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:21,248 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:21,484 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:21,764 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:22,302 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:23,142 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:23,462 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:23,715 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:23,955 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:10:24,222 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:24,484 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:25,382 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:25,680 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:26,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:26,264 INFO L93 Difference]: Finished difference Result 604 states and 790 transitions. [2020-08-18 20:10:26,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 20:10:26,265 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-08-18 20:10:26,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:26,272 INFO L225 Difference]: With dead ends: 604 [2020-08-18 20:10:26,273 INFO L226 Difference]: Without dead ends: 459 [2020-08-18 20:10:26,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 20:10:26,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-08-18 20:10:26,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 397. [2020-08-18 20:10:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-18 20:10:26,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 467 transitions. [2020-08-18 20:10:26,366 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 467 transitions. Word has length 74 [2020-08-18 20:10:26,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:26,366 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 467 transitions. [2020-08-18 20:10:26,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:10:26,367 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 467 transitions. [2020-08-18 20:10:26,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-08-18 20:10:26,370 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:26,371 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:10:26,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:10:26,371 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:26,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:26,372 INFO L82 PathProgramCache]: Analyzing trace with hash 2117624429, now seen corresponding path program 1 times [2020-08-18 20:10:26,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:26,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241159147] [2020-08-18 20:10:26,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,735 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:26,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:10:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:10:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:10:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 20:10:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 20:10:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 20:10:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 20:10:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 20:10:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 20:10:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:26,931 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-18 20:10:26,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241159147] [2020-08-18 20:10:26,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:10:26,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 20:10:26,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664895494] [2020-08-18 20:10:26,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 20:10:26,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:26,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 20:10:26,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 20:10:26,933 INFO L87 Difference]: Start difference. First operand 397 states and 467 transitions. Second operand 13 states. [2020-08-18 20:10:27,542 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:28,152 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:28,726 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:28,989 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 20:10:29,261 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:10:29,518 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:29,763 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:10:30,011 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 20:10:30,300 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:10:30,565 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:10:31,942 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:32,203 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:10:32,432 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:32,674 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:33,165 INFO L93 Difference]: Finished difference Result 831 states and 1058 transitions. [2020-08-18 20:10:33,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 20:10:33,166 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 119 [2020-08-18 20:10:33,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:33,171 INFO L225 Difference]: With dead ends: 831 [2020-08-18 20:10:33,171 INFO L226 Difference]: Without dead ends: 458 [2020-08-18 20:10:33,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 20:10:33,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-08-18 20:10:33,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 391. [2020-08-18 20:10:33,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-18 20:10:33,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 461 transitions. [2020-08-18 20:10:33,255 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 461 transitions. Word has length 119 [2020-08-18 20:10:33,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:33,256 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 461 transitions. [2020-08-18 20:10:33,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 20:10:33,256 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 461 transitions. [2020-08-18 20:10:33,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-18 20:10:33,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:33,259 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:10:33,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:10:33,259 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:33,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:33,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1622369259, now seen corresponding path program 1 times [2020-08-18 20:10:33,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:33,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121585395] [2020-08-18 20:10:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,511 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:33,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:10:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:10:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 20:10:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 20:10:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 20:10:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 20:10:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 20:10:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 20:10:33,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121585395] [2020-08-18 20:10:33,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:10:33,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 20:10:33,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763049633] [2020-08-18 20:10:33,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:10:33,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:33,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:10:33,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:10:33,676 INFO L87 Difference]: Start difference. First operand 391 states and 461 transitions. Second operand 12 states. [2020-08-18 20:10:34,614 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:34,949 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:35,214 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:35,748 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:35,979 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:36,200 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:36,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:36,900 INFO L93 Difference]: Finished difference Result 709 states and 866 transitions. [2020-08-18 20:10:36,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:10:36,900 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2020-08-18 20:10:36,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:36,904 INFO L225 Difference]: With dead ends: 709 [2020-08-18 20:10:36,904 INFO L226 Difference]: Without dead ends: 342 [2020-08-18 20:10:36,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:10:36,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-08-18 20:10:36,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 316. [2020-08-18 20:10:36,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-18 20:10:36,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 370 transitions. [2020-08-18 20:10:36,968 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 370 transitions. Word has length 111 [2020-08-18 20:10:36,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:36,969 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 370 transitions. [2020-08-18 20:10:36,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:10:36,969 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 370 transitions. [2020-08-18 20:10:36,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-18 20:10:36,971 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:36,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:10:36,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:10:36,971 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:36,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:36,972 INFO L82 PathProgramCache]: Analyzing trace with hash 782485200, now seen corresponding path program 1 times [2020-08-18 20:10:36,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:36,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109500589] [2020-08-18 20:10:36,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,331 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:37,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:10:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:10:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:10:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 20:10:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:10:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 20:10:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 20:10:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 20:10:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:37,470 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:10:37,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109500589] [2020-08-18 20:10:37,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:10:37,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 20:10:37,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516537561] [2020-08-18 20:10:37,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:10:37,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:37,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:10:37,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:10:37,473 INFO L87 Difference]: Start difference. First operand 316 states and 370 transitions. Second operand 12 states. [2020-08-18 20:10:37,820 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:10:38,625 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:39,139 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:10:39,418 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:39,647 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:39,876 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:40,138 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:40,382 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:41,360 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:41,621 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:42,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:42,118 INFO L93 Difference]: Finished difference Result 739 states and 931 transitions. [2020-08-18 20:10:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 20:10:42,119 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-08-18 20:10:42,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:42,124 INFO L225 Difference]: With dead ends: 739 [2020-08-18 20:10:42,124 INFO L226 Difference]: Without dead ends: 505 [2020-08-18 20:10:42,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2020-08-18 20:10:42,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2020-08-18 20:10:42,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 421. [2020-08-18 20:10:42,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-08-18 20:10:42,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 500 transitions. [2020-08-18 20:10:42,230 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 500 transitions. Word has length 115 [2020-08-18 20:10:42,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:42,231 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 500 transitions. [2020-08-18 20:10:42,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:10:42,231 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 500 transitions. [2020-08-18 20:10:42,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-18 20:10:42,238 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:42,238 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:10:42,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:10:42,239 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:42,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:42,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1084902701, now seen corresponding path program 2 times [2020-08-18 20:10:42,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:42,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748877386] [2020-08-18 20:10:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,590 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:10:42,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:10:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:10:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:10:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:10:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:10:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:10:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:10:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 20:10:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 20:10:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:10:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 20:10:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:10:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 20:10:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 20:10:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 20:10:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:10:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 20:10:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-18 20:10:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:10:42,875 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 39 proven. 18 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-08-18 20:10:42,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748877386] [2020-08-18 20:10:42,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:10:42,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 20:10:42,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207038976] [2020-08-18 20:10:42,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 20:10:42,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:10:42,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 20:10:42,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:10:42,878 INFO L87 Difference]: Start difference. First operand 421 states and 500 transitions. Second operand 14 states. [2020-08-18 20:10:43,357 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:43,962 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:44,733 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:44,995 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:45,226 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:45,474 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:45,736 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:45,991 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:10:46,848 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:10:47,117 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:10:47,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:10:47,986 INFO L93 Difference]: Finished difference Result 1024 states and 1341 transitions. [2020-08-18 20:10:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 20:10:47,986 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-18 20:10:47,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:10:47,993 INFO L225 Difference]: With dead ends: 1024 [2020-08-18 20:10:47,994 INFO L226 Difference]: Without dead ends: 685 [2020-08-18 20:10:47,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=288, Invalid=834, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 20:10:47,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-08-18 20:10:48,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 422. [2020-08-18 20:10:48,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-08-18 20:10:48,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 502 transitions. [2020-08-18 20:10:48,098 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 502 transitions. Word has length 155 [2020-08-18 20:10:48,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:10:48,100 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 502 transitions. [2020-08-18 20:10:48,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 20:10:48,100 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 502 transitions. [2020-08-18 20:10:48,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 20:10:48,103 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:10:48,103 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:10:48,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:10:48,103 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:10:48,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:10:48,104 INFO L82 PathProgramCache]: Analyzing trace with hash 218697075, now seen corresponding path program 3 times [2020-08-18 20:10:48,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:10:48,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185783190] [2020-08-18 20:10:48,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:10:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:10:48,181 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:10:48,182 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:10:48,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:10:48,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:10:48 BoogieIcfgContainer [2020-08-18 20:10:48,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:10:48,238 INFO L168 Benchmark]: Toolchain (without parser) took 38609.65 ms. Allocated memory was 147.3 MB in the beginning and 679.0 MB in the end (delta: 531.6 MB). Free memory was 102.6 MB in the beginning and 489.0 MB in the end (delta: -386.4 MB). Peak memory consumption was 145.2 MB. Max. memory is 7.1 GB. [2020-08-18 20:10:48,239 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 20:10:48,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 676.16 ms. Allocated memory was 147.3 MB in the beginning and 202.4 MB in the end (delta: 55.1 MB). Free memory was 102.4 MB in the beginning and 170.7 MB in the end (delta: -68.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:10:48,245 INFO L168 Benchmark]: Boogie Preprocessor took 89.94 ms. Allocated memory is still 202.4 MB. Free memory was 170.7 MB in the beginning and 166.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 20:10:48,246 INFO L168 Benchmark]: RCFGBuilder took 1081.82 ms. Allocated memory was 202.4 MB in the beginning and 237.0 MB in the end (delta: 34.6 MB). Free memory was 166.6 MB in the beginning and 198.9 MB in the end (delta: -32.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:10:48,248 INFO L168 Benchmark]: TraceAbstraction took 36756.60 ms. Allocated memory was 237.0 MB in the beginning and 679.0 MB in the end (delta: 442.0 MB). Free memory was 198.9 MB in the beginning and 489.0 MB in the end (delta: -290.1 MB). Peak memory consumption was 151.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:10:48,255 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 676.16 ms. Allocated memory was 147.3 MB in the beginning and 202.4 MB in the end (delta: 55.1 MB). Free memory was 102.4 MB in the beginning and 170.7 MB in the end (delta: -68.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.94 ms. Allocated memory is still 202.4 MB. Free memory was 170.7 MB in the beginning and 166.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1081.82 ms. Allocated memory was 202.4 MB in the beginning and 237.0 MB in the end (delta: 34.6 MB). Free memory was 166.6 MB in the beginning and 198.9 MB in the end (delta: -32.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36756.60 ms. Allocated memory was 237.0 MB in the beginning and 679.0 MB in the end (delta: 442.0 MB). Free memory was 198.9 MB in the beginning and 489.0 MB in the end (delta: -290.1 MB). Peak memory consumption was 151.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 540]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L282] int pumpRunning = 0; [L283] int systemActive = 1; [L442] int waterLevel = 1; [L443] int methaneLevelCritical = 0; [L714] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L150] int retValue_acc ; [L151] int tmp ; [L155] FCALL select_helpers() [L156] FCALL select_features() [L157] CALL, EXPR valid_product() [L199] int retValue_acc ; [L202] retValue_acc = 1 [L203] return (retValue_acc); [L157] RET, EXPR valid_product() [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) [L161] FCALL setup() [L162] CALL runTest() [L141] CALL test() [L210] int splverifierCounter ; [L211] int tmp ; [L212] int tmp___0 ; [L213] int tmp___1 ; [L214] int tmp___2 ; [L217] splverifierCounter = 0 [L219] COND TRUE 1 [L221] COND TRUE splverifierCounter < 4 [L227] tmp = __VERIFIER_nondet_int() [L229] COND TRUE \read(tmp) [L231] CALL waterRise() [L460] COND TRUE waterLevel < 2 [L461] waterLevel = waterLevel + 1 [L231] RET waterRise() [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND FALSE !(\read(tmp___2)) [L255] tmp___1 = __VERIFIER_nondet_int() [L257] COND TRUE \read(tmp___1) [L264] CALL timeShift() [L289] COND FALSE !(\read(pumpRunning)) [L296] COND TRUE \read(systemActive) [L298] CALL processEnvironment() [L318] int tmp ; [L321] COND TRUE ! pumpRunning [L323] CALL, EXPR isHighWaterLevel() [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; [L421] CALL, EXPR isHighWaterSensorDry() [L522] int retValue_acc ; [L525] COND FALSE !(waterLevel < 2) [L529] retValue_acc = 0 [L530] return (retValue_acc); [L421] RET, EXPR isHighWaterSensorDry() [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); [L323] RET, EXPR isHighWaterLevel() [L323] tmp = isHighWaterLevel() [L325] COND TRUE \read(tmp) [L327] CALL activatePump() [L346] pumpRunning = 1 [L327] RET activatePump() [L298] RET processEnvironment() [L304] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L304] RET __utac_acc__Specification4_spec__1() [L264] RET timeShift() [L219] COND TRUE 1 [L221] COND TRUE splverifierCounter < 4 [L227] tmp = __VERIFIER_nondet_int() [L229] COND FALSE !(\read(tmp)) [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND FALSE !(\read(tmp___2)) [L255] tmp___1 = __VERIFIER_nondet_int() [L257] COND TRUE \read(tmp___1) [L264] CALL timeShift() [L289] COND TRUE \read(pumpRunning) [L291] CALL lowerWaterLevel() [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 [L291] RET lowerWaterLevel() [L296] COND TRUE \read(systemActive) [L298] CALL processEnvironment() [L318] int tmp ; [L321] COND FALSE !(! pumpRunning) [L336] FCALL processEnvironment__wrappee__base() [L298] RET processEnvironment() [L304] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L304] RET __utac_acc__Specification4_spec__1() [L264] RET timeShift() [L219] COND TRUE 1 [L221] COND TRUE splverifierCounter < 4 [L227] tmp = __VERIFIER_nondet_int() [L229] COND FALSE !(\read(tmp)) [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND FALSE !(\read(tmp___2)) [L255] tmp___1 = __VERIFIER_nondet_int() [L257] COND TRUE \read(tmp___1) [L264] CALL timeShift() [L289] COND TRUE \read(pumpRunning) [L291] CALL lowerWaterLevel() [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 [L291] RET lowerWaterLevel() [L296] COND TRUE \read(systemActive) [L298] CALL processEnvironment() [L318] int tmp ; [L321] COND FALSE !(! pumpRunning) [L336] FCALL processEnvironment__wrappee__base() [L298] RET processEnvironment() [L304] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L53] CALL, EXPR isPumpRunning() [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L540] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 219 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.6s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 31.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 969 SDtfs, 2437 SDslu, 1384 SDs, 0 SdLazy, 6714 SolverSat, 1761 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 439 GetRequests, 275 SyntacticMatches, 10 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 16.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=422occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 624 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 930 NumberOfCodeBlocks, 930 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 770 ConstructedInterpolants, 0 QuantifiedInterpolants, 286969 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 141/169 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...