/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:42:43,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:42:43,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:42:43,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:42:43,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:42:43,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:42:43,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:42:43,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:42:43,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:42:43,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:42:43,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:42:43,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:42:43,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:42:43,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:42:43,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:42:43,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:42:43,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:42:43,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:42:43,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:42:43,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:42:43,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:42:43,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:42:43,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:42:43,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:42:43,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:42:43,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:42:43,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:42:43,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:42:43,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:42:43,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:42:43,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:42:43,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:42:43,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:42:43,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:42:44,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:42:44,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:42:44,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:42:44,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:42:44,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:42:44,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:42:44,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:42:44,006 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 [2020-08-27 21:42:44,048 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:42:44,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:42:44,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:42:44,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:42:44,050 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:42:44,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:42:44,051 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:42:44,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:42:44,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:42:44,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:42:44,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:42:44,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:42:44,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:42:44,052 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:42:44,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:42:44,053 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:42:44,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:42:44,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:42:44,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:42:44,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:42:44,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:42:44,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:42:44,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:42:44,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:42:44,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:42:44,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:42:44,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:42:44,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:42:44,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:42:44,056 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 -> false [2020-08-27 21:42:44,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:42:44,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:42:44,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:42:44,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:42:44,541 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:42:44,542 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_productSimulator.cil.c [2020-08-27 21:42:44,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/caecd4bc1/7fd382b8820b4d6f985e6958d8159d0f/FLAGa14f8d276 [2020-08-27 21:42:45,322 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:42:45,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_productSimulator.cil.c [2020-08-27 21:42:45,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/caecd4bc1/7fd382b8820b4d6f985e6958d8159d0f/FLAGa14f8d276 [2020-08-27 21:42:45,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/caecd4bc1/7fd382b8820b4d6f985e6958d8159d0f [2020-08-27 21:42:45,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:42:45,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:42:45,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:42:45,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:42:45,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:42:45,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:42:45" (1/1) ... [2020-08-27 21:42:45,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d644e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:45, skipping insertion in model container [2020-08-27 21:42:45,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:42:45" (1/1) ... [2020-08-27 21:42:45,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:42:45,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:42:46,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:42:46,149 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:42:46,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:42:46,341 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:42:46,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:46 WrapperNode [2020-08-27 21:42:46,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:42:46,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:42:46,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:42:46,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:42:46,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:46" (1/1) ... [2020-08-27 21:42:46,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:46" (1/1) ... [2020-08-27 21:42:46,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:46" (1/1) ... [2020-08-27 21:42:46,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:46" (1/1) ... [2020-08-27 21:42:46,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:46" (1/1) ... [2020-08-27 21:42:46,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:46" (1/1) ... [2020-08-27 21:42:46,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:46" (1/1) ... [2020-08-27 21:42:46,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:42:46,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:42:46,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:42:46,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:42:46,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:46" (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 [2020-08-27 21:42:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:42:46,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:42:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:42:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:42:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:42:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:42:46,536 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:42:46,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:42:46,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-27 21:42:46,537 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:42:46,537 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-27 21:42:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-27 21:42:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-27 21:42:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-27 21:42:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-27 21:42:46,538 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-27 21:42:46,539 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:42:46,539 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-27 21:42:46,539 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-27 21:42:46,539 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:42:46,540 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:42:46,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:42:46,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:42:46,540 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:42:46,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:42:46,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-27 21:42:46,541 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-27 21:42:46,541 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-27 21:42:46,541 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:42:46,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:42:46,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:42:46,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:42:46,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:42:46,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:42:46,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:42:46,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:42:46,542 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:42:46,542 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:42:46,543 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:42:46,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:42:46,543 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:42:46,543 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:42:46,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:42:46,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-27 21:42:46,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:42:46,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:42:46,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:42:46,544 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:42:46,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:42:46,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:42:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:42:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:42:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:42:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:42:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:42:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:42:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:42:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:42:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:42:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:42:46,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:42:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:42:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:42:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:42:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:42:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:42:46,548 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:42:46,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-27 21:42:46,548 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:42:46,548 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:42:46,548 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:42:46,549 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:42:46,549 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-27 21:42:46,549 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:42:46,549 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:42:46,549 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-27 21:42:46,550 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-27 21:42:46,550 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:42:46,550 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-27 21:42:46,550 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:42:46,550 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-27 21:42:46,551 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-27 21:42:46,551 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-27 21:42:46,551 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-27 21:42:46,551 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-27 21:42:46,551 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:42:46,551 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-27 21:42:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-27 21:42:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-27 21:42:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:42:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:42:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:42:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:42:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:42:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:42:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:42:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:42:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:42:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:42:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:42:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:42:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:42:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:42:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:42:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:42:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:42:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:42:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:42:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:42:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:42:47,897 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:42:47,897 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:42:47,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:42:47 BoogieIcfgContainer [2020-08-27 21:42:47,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:42:47,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:42:47,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:42:47,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:42:47,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:42:45" (1/3) ... [2020-08-27 21:42:47,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dcf5d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:42:47, skipping insertion in model container [2020-08-27 21:42:47,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:42:46" (2/3) ... [2020-08-27 21:42:47,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dcf5d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:42:47, skipping insertion in model container [2020-08-27 21:42:47,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:42:47" (3/3) ... [2020-08-27 21:42:47,921 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_productSimulator.cil.c [2020-08-27 21:42:47,932 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:42:47,943 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:42:47,965 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:42:47,997 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:42:47,997 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:42:47,997 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:42:47,997 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:42:47,997 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:42:47,997 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:42:47,997 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:42:47,998 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:42:48,027 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states. [2020-08-27 21:42:48,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-27 21:42:48,041 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:48,042 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:48,043 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:48,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:48,053 INFO L82 PathProgramCache]: Analyzing trace with hash 88276295, now seen corresponding path program 1 times [2020-08-27 21:42:48,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:48,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114428668] [2020-08-27 21:42:48,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:48,952 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-27 21:42:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:49,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:49,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:42:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:49,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:49,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:49,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 21:42:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:49,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:49,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-27 21:42:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:49,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-27 21:42:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:49,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:42:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:49,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 21:42:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:49,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-27 21:42:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:49,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 21:42:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-27 21:42:49,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114428668] [2020-08-27 21:42:49,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:49,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-27 21:42:49,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120285715] [2020-08-27 21:42:49,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-27 21:42:49,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:49,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-27 21:42:49,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:42:49,165 INFO L87 Difference]: Start difference. First operand 245 states. Second operand 5 states. [2020-08-27 21:42:51,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:51,581 INFO L93 Difference]: Finished difference Result 442 states and 581 transitions. [2020-08-27 21:42:51,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-27 21:42:51,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-08-27 21:42:51,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:51,616 INFO L225 Difference]: With dead ends: 442 [2020-08-27 21:42:51,616 INFO L226 Difference]: Without dead ends: 251 [2020-08-27 21:42:51,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:42:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-27 21:42:51,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 202. [2020-08-27 21:42:51,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-27 21:42:51,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 247 transitions. [2020-08-27 21:42:51,774 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 247 transitions. Word has length 78 [2020-08-27 21:42:51,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:51,775 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 247 transitions. [2020-08-27 21:42:51,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-27 21:42:51,775 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 247 transitions. [2020-08-27 21:42:51,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-27 21:42:51,781 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:51,781 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:51,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:42:51,782 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:51,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:51,782 INFO L82 PathProgramCache]: Analyzing trace with hash 128874418, now seen corresponding path program 1 times [2020-08-27 21:42:51,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:51,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671199817] [2020-08-27 21:42:51,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:52,261 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-27 21:42:52,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:52,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:52,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:42:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:52,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:52,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:52,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 21:42:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:52,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:52,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-27 21:42:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-27 21:42:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:52,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:42:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:52,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 21:42:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:52,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-27 21:42:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:52,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-27 21:42:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-27 21:42:52,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671199817] [2020-08-27 21:42:52,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:52,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:42:52,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360917819] [2020-08-27 21:42:52,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:42:52,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:52,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:42:52,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:42:52,406 INFO L87 Difference]: Start difference. First operand 202 states and 247 transitions. Second operand 6 states. [2020-08-27 21:42:53,234 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-27 21:42:55,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:42:55,105 INFO L93 Difference]: Finished difference Result 366 states and 459 transitions. [2020-08-27 21:42:55,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-27 21:42:55,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-08-27 21:42:55,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:42:55,111 INFO L225 Difference]: With dead ends: 366 [2020-08-27 21:42:55,111 INFO L226 Difference]: Without dead ends: 235 [2020-08-27 21:42:55,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:42:55,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-27 21:42:55,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 193. [2020-08-27 21:42:55,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-27 21:42:55,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 235 transitions. [2020-08-27 21:42:55,176 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 235 transitions. Word has length 79 [2020-08-27 21:42:55,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:42:55,177 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 235 transitions. [2020-08-27 21:42:55,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:42:55,177 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 235 transitions. [2020-08-27 21:42:55,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-27 21:42:55,181 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:42:55,181 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:42:55,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:42:55,181 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:42:55,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:42:55,182 INFO L82 PathProgramCache]: Analyzing trace with hash 2075074883, now seen corresponding path program 1 times [2020-08-27 21:42:55,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:42:55,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153731364] [2020-08-27 21:42:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:42:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,675 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-27 21:42:55,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:42:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:42:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:42:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:42:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 21:42:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:42:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-27 21:42:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-27 21:42:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:42:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 21:42:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 21:42:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-27 21:42:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:42:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-27 21:42:55,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153731364] [2020-08-27 21:42:55,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:42:55,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:42:55,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178485471] [2020-08-27 21:42:55,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:42:55,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:42:55,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:42:55,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:42:55,960 INFO L87 Difference]: Start difference. First operand 193 states and 235 transitions. Second operand 12 states. [2020-08-27 21:42:56,711 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-27 21:42:57,548 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-27 21:42:58,526 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-27 21:42:59,657 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-27 21:43:00,146 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-27 21:43:04,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:43:04,589 INFO L93 Difference]: Finished difference Result 628 states and 796 transitions. [2020-08-27 21:43:04,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-27 21:43:04,591 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-27 21:43:04,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:43:04,596 INFO L225 Difference]: With dead ends: 628 [2020-08-27 21:43:04,597 INFO L226 Difference]: Without dead ends: 476 [2020-08-27 21:43:04,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-08-27 21:43:04,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-27 21:43:04,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 385. [2020-08-27 21:43:04,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-27 21:43:04,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 480 transitions. [2020-08-27 21:43:04,722 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 480 transitions. Word has length 84 [2020-08-27 21:43:04,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:43:04,723 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 480 transitions. [2020-08-27 21:43:04,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:43:04,723 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 480 transitions. [2020-08-27 21:43:04,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-27 21:43:04,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:43:04,727 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:43:04,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:43:04,728 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:43:04,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:43:04,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1129127896, now seen corresponding path program 1 times [2020-08-27 21:43:04,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:43:04,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998865519] [2020-08-27 21:43:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:43:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:05,215 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-27 21:43:05,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:43:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:05,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:43:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:05,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:43:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:05,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:05,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:43:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:05,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 21:43:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:05,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:43:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:05,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-27 21:43:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:05,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-27 21:43:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:05,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:43:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:05,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 21:43:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:05,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-27 21:43:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:05,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-27 21:43:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:05,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-27 21:43:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-27 21:43:05,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998865519] [2020-08-27 21:43:05,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:43:05,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-27 21:43:05,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196081441] [2020-08-27 21:43:05,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-27 21:43:05,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:43:05,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-27 21:43:05,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:43:05,469 INFO L87 Difference]: Start difference. First operand 385 states and 480 transitions. Second operand 16 states. [2020-08-27 21:43:06,212 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-27 21:43:07,107 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-27 21:43:08,115 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-27 21:43:09,085 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-27 21:43:10,115 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-27 21:43:11,408 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-27 21:43:12,377 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 215 [2020-08-27 21:43:13,276 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 215 [2020-08-27 21:43:13,698 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-27 21:43:14,141 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-27 21:43:14,725 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-27 21:43:15,269 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-27 21:43:15,880 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-27 21:43:21,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:43:21,260 INFO L93 Difference]: Finished difference Result 1582 states and 2206 transitions. [2020-08-27 21:43:21,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-27 21:43:21,264 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2020-08-27 21:43:21,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:43:21,277 INFO L225 Difference]: With dead ends: 1582 [2020-08-27 21:43:21,278 INFO L226 Difference]: Without dead ends: 1238 [2020-08-27 21:43:21,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=352, Invalid=1208, Unknown=0, NotChecked=0, Total=1560 [2020-08-27 21:43:21,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-08-27 21:43:21,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1109. [2020-08-27 21:43:21,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2020-08-27 21:43:21,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1462 transitions. [2020-08-27 21:43:21,645 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1462 transitions. Word has length 90 [2020-08-27 21:43:21,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:43:21,646 INFO L479 AbstractCegarLoop]: Abstraction has 1109 states and 1462 transitions. [2020-08-27 21:43:21,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-27 21:43:21,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1462 transitions. [2020-08-27 21:43:21,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-27 21:43:21,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:43:21,651 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:43:21,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:43:21,652 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:43:21,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:43:21,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1905240978, now seen corresponding path program 1 times [2020-08-27 21:43:21,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:43:21,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126421170] [2020-08-27 21:43:21,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:43:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,060 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-27 21:43:22,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:43:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:43:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:43:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:43:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 21:43:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:43:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-27 21:43:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-27 21:43:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:43:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 21:43:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-27 21:43:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-27 21:43:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-27 21:43:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-27 21:43:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-27 21:43:22,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126421170] [2020-08-27 21:43:22,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:43:22,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:43:22,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456749170] [2020-08-27 21:43:22,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:43:22,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:43:22,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:43:22,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:43:22,255 INFO L87 Difference]: Start difference. First operand 1109 states and 1462 transitions. Second operand 8 states. [2020-08-27 21:43:22,847 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-27 21:43:26,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:43:26,740 INFO L93 Difference]: Finished difference Result 2674 states and 3837 transitions. [2020-08-27 21:43:26,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-27 21:43:26,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-27 21:43:26,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:43:26,752 INFO L225 Difference]: With dead ends: 2674 [2020-08-27 21:43:26,752 INFO L226 Difference]: Without dead ends: 1606 [2020-08-27 21:43:26,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-08-27 21:43:26,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2020-08-27 21:43:27,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1507. [2020-08-27 21:43:27,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2020-08-27 21:43:27,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2004 transitions. [2020-08-27 21:43:27,154 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2004 transitions. Word has length 94 [2020-08-27 21:43:27,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:43:27,155 INFO L479 AbstractCegarLoop]: Abstraction has 1507 states and 2004 transitions. [2020-08-27 21:43:27,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:43:27,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2004 transitions. [2020-08-27 21:43:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-08-27 21:43:27,160 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:43:27,161 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2020-08-27 21:43:27,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:43:27,162 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:43:27,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:43:27,162 INFO L82 PathProgramCache]: Analyzing trace with hash -509299228, now seen corresponding path program 1 times [2020-08-27 21:43:27,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:43:27,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702471878] [2020-08-27 21:43:27,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:43:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:27,742 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-27 21:43:27,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:43:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:27,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:43:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:27,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:43:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:27,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:27,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:43:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:27,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 21:43:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:27,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:43:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:27,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-27 21:43:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:27,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-27 21:43:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:27,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:43:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:27,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 21:43:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:27,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-27 21:43:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:27,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 21:43:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:28,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-27 21:43:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:28,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:28,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:28,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-27 21:43:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:28,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-27 21:43:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:28,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-27 21:43:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:28,136 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-08-27 21:43:28,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702471878] [2020-08-27 21:43:28,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:43:28,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-27 21:43:28,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643791088] [2020-08-27 21:43:28,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:43:28,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:43:28,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:43:28,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:43:28,141 INFO L87 Difference]: Start difference. First operand 1507 states and 2004 transitions. Second operand 12 states. [2020-08-27 21:43:29,228 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-08-27 21:43:30,327 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-27 21:43:34,280 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-27 21:43:38,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:43:38,790 INFO L93 Difference]: Finished difference Result 2888 states and 4054 transitions. [2020-08-27 21:43:38,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-27 21:43:38,791 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 122 [2020-08-27 21:43:38,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:43:38,804 INFO L225 Difference]: With dead ends: 2888 [2020-08-27 21:43:38,805 INFO L226 Difference]: Without dead ends: 1787 [2020-08-27 21:43:38,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=314, Invalid=1018, Unknown=0, NotChecked=0, Total=1332 [2020-08-27 21:43:38,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2020-08-27 21:43:39,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1658. [2020-08-27 21:43:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-08-27 21:43:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2197 transitions. [2020-08-27 21:43:39,255 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2197 transitions. Word has length 122 [2020-08-27 21:43:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:43:39,255 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2197 transitions. [2020-08-27 21:43:39,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:43:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2197 transitions. [2020-08-27 21:43:39,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-27 21:43:39,261 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:43:39,262 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:43:39,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:43:39,262 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:43:39,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:43:39,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1104863335, now seen corresponding path program 1 times [2020-08-27 21:43:39,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:43:39,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111125959] [2020-08-27 21:43:39,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:43:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,693 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-27 21:43:39,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:43:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:43:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:43:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:43:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-27 21:43:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:43:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-27 21:43:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-27 21:43:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:43:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 21:43:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-27 21:43:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-27 21:43:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:43:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:43:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 21:43:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-27 21:43:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-27 21:43:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:43:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-27 21:43:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:39,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-27 21:43:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:43:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-08-27 21:43:40,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111125959] [2020-08-27 21:43:40,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:43:40,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-27 21:43:40,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932162982] [2020-08-27 21:43:40,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 21:43:40,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:43:40,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 21:43:40,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:43:40,021 INFO L87 Difference]: Start difference. First operand 1658 states and 2197 transitions. Second operand 11 states. [2020-08-27 21:43:42,702 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-27 21:43:43,073 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 211