/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:26:17,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:26:17,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:26:17,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:26:17,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:26:17,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:26:17,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:26:17,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:26:17,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:26:17,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:26:17,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:26:17,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:26:17,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:26:17,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:26:17,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:26:17,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:26:17,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:26:17,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:26:17,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:26:17,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:26:17,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:26:17,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:26:17,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:26:17,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:26:17,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:26:17,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:26:17,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:26:17,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:26:17,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:26:17,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:26:17,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:26:17,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:26:17,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:26:17,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:26:17,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:26:17,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:26:17,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:26:17,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:26:17,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:26:17,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:26:17,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:26:17,268 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 [2020-08-22 00:26:17,311 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:26:17,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:26:17,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:26:17,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:26:17,314 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:26:17,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:26:17,315 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:26:17,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:26:17,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:26:17,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:26:17,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:26:17,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:26:17,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:26:17,317 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:26:17,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:26:17,318 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:26:17,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:26:17,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:26:17,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:26:17,319 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:26:17,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:26:17,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:26:17,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:26:17,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:26:17,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:26:17,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:26:17,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:26:17,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:26:17,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:26:17,320 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:26:17,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:26:17,621 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:26:17,624 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:26:17,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:26:17,626 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:26:17,627 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-22 00:26:17,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24b0a28a3/48f2562661524147a4305f8b08dd8c28/FLAG443ececb0 [2020-08-22 00:26:18,285 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:26:18,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-22 00:26:18,305 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24b0a28a3/48f2562661524147a4305f8b08dd8c28/FLAG443ececb0 [2020-08-22 00:26:18,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24b0a28a3/48f2562661524147a4305f8b08dd8c28 [2020-08-22 00:26:18,608 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:26:18,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:26:18,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:26:18,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:26:18,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:26:18,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:26:18" (1/1) ... [2020-08-22 00:26:18,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e0a100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:18, skipping insertion in model container [2020-08-22 00:26:18,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:26:18" (1/1) ... [2020-08-22 00:26:18,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:26:18,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:26:19,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:26:19,129 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:26:19,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:26:19,254 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:26:19,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:19 WrapperNode [2020-08-22 00:26:19,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:26:19,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:26:19,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:26:19,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:26:19,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:19" (1/1) ... [2020-08-22 00:26:19,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:19" (1/1) ... [2020-08-22 00:26:19,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:19" (1/1) ... [2020-08-22 00:26:19,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:19" (1/1) ... [2020-08-22 00:26:19,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:19" (1/1) ... [2020-08-22 00:26:19,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:19" (1/1) ... [2020-08-22 00:26:19,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:19" (1/1) ... [2020-08-22 00:26:19,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:26:19,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:26:19,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:26:19,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:26:19,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:19" (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 [2020-08-22 00:26:19,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:26:19,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:26:19,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 00:26:19,427 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 00:26:19,427 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 00:26:19,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 00:26:19,428 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 00:26:19,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:26:19,428 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 00:26:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 00:26:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 00:26:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 00:26:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 00:26:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 00:26:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 00:26:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 00:26:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 00:26:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 00:26:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 00:26:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 00:26:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 00:26:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 00:26:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 00:26:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 00:26:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 00:26:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 00:26:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 00:26:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 00:26:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 00:26:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 00:26:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 00:26:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 00:26:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 00:26:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 00:26:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 00:26:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 00:26:19,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 00:26:19,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 00:26:19,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 00:26:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:26:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:26:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 00:26:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 00:26:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 00:26:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 00:26:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 00:26:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 00:26:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 00:26:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 00:26:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 00:26:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 00:26:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 00:26:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 00:26:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 00:26:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:26:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 00:26:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 00:26:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 00:26:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 00:26:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 00:26:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 00:26:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 00:26:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 00:26:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 00:26:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 00:26:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 00:26:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 00:26:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 00:26:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 00:26:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:26:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 00:26:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 00:26:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 00:26:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 00:26:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:26:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 00:26:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 00:26:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:26:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:26:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:26:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:26:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 00:26:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:26:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 00:26:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 00:26:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:26:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 00:26:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 00:26:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 00:26:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:26:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 00:26:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:26:20,587 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:26:20,588 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 00:26:20,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:26:20 BoogieIcfgContainer [2020-08-22 00:26:20,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:26:20,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:26:20,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:26:20,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:26:20,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:26:18" (1/3) ... [2020-08-22 00:26:20,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404b566b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:26:20, skipping insertion in model container [2020-08-22 00:26:20,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:19" (2/3) ... [2020-08-22 00:26:20,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404b566b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:26:20, skipping insertion in model container [2020-08-22 00:26:20,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:26:20" (3/3) ... [2020-08-22 00:26:20,602 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2020-08-22 00:26:20,613 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:26:20,622 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:26:20,637 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:26:20,663 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:26:20,663 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:26:20,664 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:26:20,664 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:26:20,664 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:26:20,664 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:26:20,664 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:26:20,665 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:26:20,691 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-22 00:26:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 00:26:20,702 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:20,703 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] [2020-08-22 00:26:20,703 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:20,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:20,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2020-08-22 00:26:20,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:20,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375245650] [2020-08-22 00:26:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:21,374 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:21,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:21,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:21,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:21,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:21,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:21,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:26:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:21,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:26:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:21,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:26:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:26:21,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375245650] [2020-08-22 00:26:21,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:21,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 00:26:21,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012187993] [2020-08-22 00:26:21,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 00:26:21,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:21,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 00:26:21,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:26:21,537 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-22 00:26:22,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:22,662 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-08-22 00:26:22,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:26:22,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 00:26:22,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:22,680 INFO L225 Difference]: With dead ends: 296 [2020-08-22 00:26:22,680 INFO L226 Difference]: Without dead ends: 160 [2020-08-22 00:26:22,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:26:22,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-22 00:26:22,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-22 00:26:22,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-22 00:26:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2020-08-22 00:26:22,807 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2020-08-22 00:26:22,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:22,808 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2020-08-22 00:26:22,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 00:26:22,808 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2020-08-22 00:26:22,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 00:26:22,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:22,814 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] [2020-08-22 00:26:22,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:26:22,815 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:22,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:22,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2020-08-22 00:26:22,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:22,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038852368] [2020-08-22 00:26:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:23,163 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:23,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:23,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:23,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:23,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:23,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:23,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:26:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:23,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 00:26:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:23,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:26:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:26:23,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038852368] [2020-08-22 00:26:23,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:23,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:26:23,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524975047] [2020-08-22 00:26:23,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:26:23,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:23,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:26:23,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:26:23,240 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2020-08-22 00:26:23,631 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:26:24,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:24,418 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2020-08-22 00:26:24,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:26:24,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 00:26:24,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:24,421 INFO L225 Difference]: With dead ends: 225 [2020-08-22 00:26:24,422 INFO L226 Difference]: Without dead ends: 144 [2020-08-22 00:26:24,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:26:24,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-22 00:26:24,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-22 00:26:24,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-22 00:26:24,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-22 00:26:24,474 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2020-08-22 00:26:24,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:24,475 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-22 00:26:24,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:26:24,475 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-22 00:26:24,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 00:26:24,482 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:24,482 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] [2020-08-22 00:26:24,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:26:24,482 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:24,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:24,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2020-08-22 00:26:24,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:24,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290396544] [2020-08-22 00:26:24,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:24,849 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:24,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:24,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:24,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:24,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:24,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:24,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:26:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:24,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:26:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:24,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 00:26:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:26:24,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290396544] [2020-08-22 00:26:24,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:24,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:26:24,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127887055] [2020-08-22 00:26:24,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:26:24,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:24,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:26:24,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:26:24,988 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2020-08-22 00:26:25,344 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:25,644 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:25,879 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:26,140 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:27,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:27,293 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-22 00:26:27,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 00:26:27,297 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 00:26:27,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:27,300 INFO L225 Difference]: With dead ends: 238 [2020-08-22 00:26:27,300 INFO L226 Difference]: Without dead ends: 144 [2020-08-22 00:26:27,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:26:27,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-22 00:26:27,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-22 00:26:27,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-22 00:26:27,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2020-08-22 00:26:27,334 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2020-08-22 00:26:27,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:27,335 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2020-08-22 00:26:27,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:26:27,335 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2020-08-22 00:26:27,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 00:26:27,336 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:27,337 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] [2020-08-22 00:26:27,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:26:27,337 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:27,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:27,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2020-08-22 00:26:27,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:27,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278023920] [2020-08-22 00:26:27,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:27,654 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:27,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:27,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:27,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:27,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:27,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 00:26:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:27,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:26:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:27,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 00:26:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:27,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 00:26:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:27,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 00:26:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:26:27,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278023920] [2020-08-22 00:26:27,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:27,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:26:27,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87929334] [2020-08-22 00:26:27,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:26:27,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:27,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:26:27,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:26:27,735 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2020-08-22 00:26:28,073 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:29,230 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:26:29,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:29,891 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2020-08-22 00:26:29,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 00:26:29,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-08-22 00:26:29,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:29,896 INFO L225 Difference]: With dead ends: 338 [2020-08-22 00:26:29,896 INFO L226 Difference]: Without dead ends: 244 [2020-08-22 00:26:29,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:26:29,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-22 00:26:29,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-22 00:26:29,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-22 00:26:29,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2020-08-22 00:26:29,951 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2020-08-22 00:26:29,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:29,952 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2020-08-22 00:26:29,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:26:29,952 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2020-08-22 00:26:29,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-08-22 00:26:29,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:29,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:26:29,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:26:29,954 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:29,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:29,955 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2020-08-22 00:26:29,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:29,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715515168] [2020-08-22 00:26:29,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:30,234 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:30,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:30,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:30,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:30,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:30,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 00:26:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:30,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:26:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:30,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:26:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:30,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:26:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:30,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 00:26:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:30,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 00:26:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:30,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-22 00:26:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:30,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:26:30,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715515168] [2020-08-22 00:26:30,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:30,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:26:30,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064103640] [2020-08-22 00:26:30,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:26:30,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:30,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:26:30,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:26:30,336 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2020-08-22 00:26:30,700 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:32,125 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:32,379 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:32,624 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:32,887 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:33,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:33,542 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2020-08-22 00:26:33,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:26:33,546 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-08-22 00:26:33,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:33,551 INFO L225 Difference]: With dead ends: 555 [2020-08-22 00:26:33,552 INFO L226 Difference]: Without dead ends: 378 [2020-08-22 00:26:33,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:26:33,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-08-22 00:26:33,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2020-08-22 00:26:33,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-22 00:26:33,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2020-08-22 00:26:33,624 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2020-08-22 00:26:33,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:33,624 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2020-08-22 00:26:33,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:26:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2020-08-22 00:26:33,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 00:26:33,626 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:33,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:26:33,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:26:33,627 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:33,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:33,627 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2020-08-22 00:26:33,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:33,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815258571] [2020-08-22 00:26:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:33,893 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:33,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:33,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:33,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:33,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:33,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:26:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:33,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:26:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:33,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:26:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:33,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:26:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:33,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:26:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:33,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 00:26:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:33,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 00:26:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:33,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 00:26:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:33,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:26:33,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815258571] [2020-08-22 00:26:33,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:34,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:26:34,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606296664] [2020-08-22 00:26:34,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:26:34,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:34,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:26:34,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:26:34,001 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 9 states. [2020-08-22 00:26:34,383 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:34,928 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:36,473 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:37,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:37,948 INFO L93 Difference]: Finished difference Result 815 states and 1039 transitions. [2020-08-22 00:26:37,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 00:26:37,949 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-22 00:26:37,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:37,956 INFO L225 Difference]: With dead ends: 815 [2020-08-22 00:26:37,956 INFO L226 Difference]: Without dead ends: 627 [2020-08-22 00:26:37,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-22 00:26:37,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-08-22 00:26:38,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 556. [2020-08-22 00:26:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-22 00:26:38,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 666 transitions. [2020-08-22 00:26:38,103 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 666 transitions. Word has length 84 [2020-08-22 00:26:38,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:38,104 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 666 transitions. [2020-08-22 00:26:38,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:26:38,104 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 666 transitions. [2020-08-22 00:26:38,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 00:26:38,106 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:38,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:26:38,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:26:38,107 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:38,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:38,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2020-08-22 00:26:38,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:38,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971945128] [2020-08-22 00:26:38,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:38,384 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:38,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:38,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:38,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:38,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:38,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:38,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:26:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:38,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:26:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:38,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:26:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:38,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:26:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:38,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:26:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:38,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 00:26:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:38,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 00:26:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:38,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 00:26:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:38,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:26:38,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971945128] [2020-08-22 00:26:38,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:38,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:26:38,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028679753] [2020-08-22 00:26:38,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:26:38,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:38,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:26:38,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:26:38,512 INFO L87 Difference]: Start difference. First operand 556 states and 666 transitions. Second operand 8 states. [2020-08-22 00:26:39,353 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:39,595 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:39,845 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:40,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:40,694 INFO L93 Difference]: Finished difference Result 1006 states and 1249 transitions. [2020-08-22 00:26:40,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 00:26:40,694 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-22 00:26:40,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:40,698 INFO L225 Difference]: With dead ends: 1006 [2020-08-22 00:26:40,699 INFO L226 Difference]: Without dead ends: 601 [2020-08-22 00:26:40,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:26:40,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-08-22 00:26:40,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 556. [2020-08-22 00:26:40,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-22 00:26:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 665 transitions. [2020-08-22 00:26:40,793 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 665 transitions. Word has length 84 [2020-08-22 00:26:40,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:40,794 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 665 transitions. [2020-08-22 00:26:40,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:26:40,794 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 665 transitions. [2020-08-22 00:26:40,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 00:26:40,795 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:40,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:26:40,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:26:40,796 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:40,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:40,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2020-08-22 00:26:40,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:40,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297396309] [2020-08-22 00:26:40,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:41,039 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:41,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:41,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:41,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:41,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:41,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:41,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:26:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:41,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:26:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:41,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:26:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:41,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:26:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:41,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:26:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:41,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 00:26:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:41,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 00:26:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:41,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 00:26:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:41,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:26:41,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297396309] [2020-08-22 00:26:41,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:41,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 00:26:41,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311858319] [2020-08-22 00:26:41,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:26:41,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:41,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:26:41,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:26:41,183 INFO L87 Difference]: Start difference. First operand 556 states and 665 transitions. Second operand 12 states. [2020-08-22 00:26:41,730 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:41,999 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:26:42,219 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:26:42,885 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:26:43,117 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:26:43,395 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:26:43,637 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:26:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:44,625 INFO L93 Difference]: Finished difference Result 1144 states and 1416 transitions. [2020-08-22 00:26:44,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 00:26:44,626 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-22 00:26:44,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:44,630 INFO L225 Difference]: With dead ends: 1144 [2020-08-22 00:26:44,631 INFO L226 Difference]: Without dead ends: 612 [2020-08-22 00:26:44,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-22 00:26:44,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-08-22 00:26:44,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 563. [2020-08-22 00:26:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-08-22 00:26:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 672 transitions. [2020-08-22 00:26:44,716 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 672 transitions. Word has length 84 [2020-08-22 00:26:44,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:44,717 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 672 transitions. [2020-08-22 00:26:44,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:26:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 672 transitions. [2020-08-22 00:26:44,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-22 00:26:44,719 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:44,719 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 00:26:44,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:26:44,720 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:44,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:44,720 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2020-08-22 00:26:44,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:44,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566963325] [2020-08-22 00:26:44,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:45,020 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:45,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:45,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:45,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:45,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:45,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:45,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:26:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:45,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:26:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:45,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:26:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:45,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:26:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:45,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:26:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:45,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:26:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:45,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:26:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:45,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 00:26:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:45,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 00:26:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:45,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 00:26:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 00:26:45,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566963325] [2020-08-22 00:26:45,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:26:45,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 00:26:45,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78922789] [2020-08-22 00:26:45,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:26:45,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:45,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:26:45,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:26:45,340 INFO L87 Difference]: Start difference. First operand 563 states and 672 transitions. Second operand 12 states. [2020-08-22 00:26:46,111 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:46,965 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:26:47,767 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:26:48,072 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:26:48,346 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:26:48,591 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:26:48,867 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:26:49,136 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:26:49,593 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-22 00:26:49,852 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:26:50,147 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:26:50,453 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 00:26:52,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:52,497 INFO L93 Difference]: Finished difference Result 1664 states and 2066 transitions. [2020-08-22 00:26:52,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 00:26:52,498 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-22 00:26:52,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:52,505 INFO L225 Difference]: With dead ends: 1664 [2020-08-22 00:26:52,505 INFO L226 Difference]: Without dead ends: 1125 [2020-08-22 00:26:52,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-22 00:26:52,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-22 00:26:52,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2020-08-22 00:26:52,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-08-22 00:26:52,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1253 transitions. [2020-08-22 00:26:52,709 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1253 transitions. Word has length 96 [2020-08-22 00:26:52,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:52,709 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1253 transitions. [2020-08-22 00:26:52,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:26:52,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1253 transitions. [2020-08-22 00:26:52,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-22 00:26:52,713 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:52,713 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 00:26:52,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:26:52,713 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:52,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:52,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2020-08-22 00:26:52,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:52,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914417827] [2020-08-22 00:26:52,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,035 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:53,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:26:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 00:26:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:26:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:26:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:26:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:26:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:26:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:26:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 00:26:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 00:26:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 00:26:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 00:26:53,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914417827] [2020-08-22 00:26:53,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:53,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 00:26:53,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548143895] [2020-08-22 00:26:53,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 00:26:53,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:53,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 00:26:53,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:26:53,254 INFO L87 Difference]: Start difference. First operand 1062 states and 1253 transitions. Second operand 14 states. [2020-08-22 00:26:54,169 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:54,413 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:26:54,634 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:26:55,207 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:55,953 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:56,277 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:56,879 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:57,150 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:26:57,409 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:26:59,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:59,170 INFO L93 Difference]: Finished difference Result 2205 states and 2747 transitions. [2020-08-22 00:26:59,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 00:26:59,171 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-08-22 00:26:59,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:59,180 INFO L225 Difference]: With dead ends: 2205 [2020-08-22 00:26:59,181 INFO L226 Difference]: Without dead ends: 1167 [2020-08-22 00:26:59,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 00:26:59,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-08-22 00:26:59,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 978. [2020-08-22 00:26:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-08-22 00:26:59,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1149 transitions. [2020-08-22 00:26:59,359 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1149 transitions. Word has length 100 [2020-08-22 00:26:59,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:59,360 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1149 transitions. [2020-08-22 00:26:59,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 00:26:59,360 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1149 transitions. [2020-08-22 00:26:59,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-22 00:26:59,363 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:59,363 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 00:26:59,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:26:59,364 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:59,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:59,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1799494055, now seen corresponding path program 1 times [2020-08-22 00:26:59,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:59,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908986591] [2020-08-22 00:26:59,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,687 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:59,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:26:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:26:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:26:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:26:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:26:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:26:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:26:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 00:26:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 00:26:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 00:26:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:26:59,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908986591] [2020-08-22 00:26:59,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:59,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 00:26:59,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843961127] [2020-08-22 00:26:59,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 00:26:59,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:59,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 00:26:59,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:26:59,863 INFO L87 Difference]: Start difference. First operand 978 states and 1149 transitions. Second operand 13 states. [2020-08-22 00:27:00,627 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:27:00,864 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:27:01,092 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:27:02,243 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:27:02,759 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:27:03,091 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:27:03,375 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:27:04,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:27:04,180 INFO L93 Difference]: Finished difference Result 1688 states and 1988 transitions. [2020-08-22 00:27:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 00:27:04,181 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-08-22 00:27:04,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:27:04,182 INFO L225 Difference]: With dead ends: 1688 [2020-08-22 00:27:04,182 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 00:27:04,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-22 00:27:04,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 00:27:04,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 00:27:04,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 00:27:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 00:27:04,189 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2020-08-22 00:27:04,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:27:04,189 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 00:27:04,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 00:27:04,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 00:27:04,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 00:27:04,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 00:27:04,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 00:27:05,287 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-22 00:27:07,771 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-22 00:27:08,184 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-22 00:27:08,509 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-22 00:27:09,023 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-22 00:27:10,076 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-22 00:27:11,190 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-22 00:27:11,355 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-22 00:27:11,793 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 40 [2020-08-22 00:27:11,956 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-08-22 00:27:12,218 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-22 00:27:12,381 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-22 00:27:13,521 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-22 00:27:13,683 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-22 00:27:14,472 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-22 00:27:14,768 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 27 [2020-08-22 00:27:15,374 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2020-08-22 00:27:16,208 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33