/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:00:45,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:00:45,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:00:45,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:00:45,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:00:45,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:00:45,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:00:45,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:00:45,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:00:45,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:00:45,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:00:45,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:00:45,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:00:45,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:00:45,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:00:45,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:00:45,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:00:45,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:00:45,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:00:45,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:00:45,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:00:45,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:00:45,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:00:45,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:00:45,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:00:45,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:00:45,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:00:45,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:00:45,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:00:45,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:00:45,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:00:45,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:00:45,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:00:45,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:00:45,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:00:45,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:00:45,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:00:45,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:00:45,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:00:45,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:00:45,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:00:45,230 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:00:45,269 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:00:45,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:00:45,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:00:45,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:00:45,272 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:00:45,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:00:45,272 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:00:45,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:00:45,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:00:45,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:00:45,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:00:45,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:00:45,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:00:45,275 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:00:45,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:00:45,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:00:45,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:00:45,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:00:45,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:00:45,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:00:45,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:00:45,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:00:45,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:00:45,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:00:45,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:00:45,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:00:45,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:00:45,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:00:45,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:00:45,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:00:45,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:00:45,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:00:45,599 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:00:45,600 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:00:45,600 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:00:45,601 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product35.cil.c [2020-08-19 01:00:45,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39dde1fdc/8b18163f90364f939dcb2cc7cc93770c/FLAGbc6b5d3ff [2020-08-19 01:00:46,223 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:00:46,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product35.cil.c [2020-08-19 01:00:46,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39dde1fdc/8b18163f90364f939dcb2cc7cc93770c/FLAGbc6b5d3ff [2020-08-19 01:00:46,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39dde1fdc/8b18163f90364f939dcb2cc7cc93770c [2020-08-19 01:00:46,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:00:46,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:00:46,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:00:46,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:00:46,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:00:46,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:00:46" (1/1) ... [2020-08-19 01:00:46,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:00:46, skipping insertion in model container [2020-08-19 01:00:46,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:00:46" (1/1) ... [2020-08-19 01:00:46,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:00:46,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:00:46,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:00:47,011 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:00:47,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:00:47,139 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:00:47,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:00:47 WrapperNode [2020-08-19 01:00:47,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:00:47,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:00:47,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:00:47,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:00:47,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:00:47" (1/1) ... [2020-08-19 01:00:47,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:00:47" (1/1) ... [2020-08-19 01:00:47,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:00:47" (1/1) ... [2020-08-19 01:00:47,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:00:47" (1/1) ... [2020-08-19 01:00:47,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:00:47" (1/1) ... [2020-08-19 01:00:47,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:00:47" (1/1) ... [2020-08-19 01:00:47,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:00:47" (1/1) ... [2020-08-19 01:00:47,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:00:47,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:00:47,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:00:47,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:00:47,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:00:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:00:47,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:00:47,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:00:47,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:00:47,334 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:00:47,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 01:00:47,335 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:00:47,335 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:00:47,335 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:00:47,335 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:00:47,335 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:00:47,335 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:00:47,335 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:00:47,336 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:00:47,336 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:00:47,336 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 01:00:47,336 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:00:47,336 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:00:47,336 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:00:47,337 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:00:47,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:00:47,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:00:47,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:00:47,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:00:47,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:00:47,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:00:47,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:00:47,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:00:47,338 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:00:47,338 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:00:47,338 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:00:47,339 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:00:47,339 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:00:47,339 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:00:47,339 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:00:47,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:00:47,339 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:00:47,340 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:00:47,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:00:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:00:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:00:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:00:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:00:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:00:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 01:00:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:00:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:00:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:00:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:00:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:00:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:00:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 01:00:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:00:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:00:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:00:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:00:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:00:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:00:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:00:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:00:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:00:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:00:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:00:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:00:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:00:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:00:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:00:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:00:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:00:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:00:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:00:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:00:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:00:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:00:47,346 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:00:47,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:00:47,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:00:47,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:00:47,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:00:47,346 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:00:47,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:00:47,347 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:00:47,347 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:00:47,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:00:47,347 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:00:47,347 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:00:47,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:00:47,348 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:00:47,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:00:47,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:00:47,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:00:48,437 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:00:48,437 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:00:48,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:00:48 BoogieIcfgContainer [2020-08-19 01:00:48,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:00:48,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:00:48,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:00:48,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:00:48,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:00:46" (1/3) ... [2020-08-19 01:00:48,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375f53e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:00:48, skipping insertion in model container [2020-08-19 01:00:48,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:00:47" (2/3) ... [2020-08-19 01:00:48,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375f53e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:00:48, skipping insertion in model container [2020-08-19 01:00:48,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:00:48" (3/3) ... [2020-08-19 01:00:48,451 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product35.cil.c [2020-08-19 01:00:48,462 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:00:48,470 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:00:48,484 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:00:48,509 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:00:48,509 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:00:48,509 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:00:48,510 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:00:48,510 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:00:48,510 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:00:48,510 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:00:48,511 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:00:48,533 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-08-19 01:00:48,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 01:00:48,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:00:48,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:00:48,544 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:00:48,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:00:48,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1148002369, now seen corresponding path program 1 times [2020-08-19 01:00:48,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:00:48,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165736519] [2020-08-19 01:00:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:00:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:49,168 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:00:49,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:00:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:49,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:00:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:49,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:00:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:49,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:00:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:49,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:00:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:49,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:00:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:49,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:00:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:00:49,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165736519] [2020-08-19 01:00:49,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:00:49,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:00:49,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372494620] [2020-08-19 01:00:49,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:00:49,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:00:49,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:00:49,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:00:49,304 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 3 states. [2020-08-19 01:00:50,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:00:50,357 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2020-08-19 01:00:50,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:00:50,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 01:00:50,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:00:50,374 INFO L225 Difference]: With dead ends: 269 [2020-08-19 01:00:50,375 INFO L226 Difference]: Without dead ends: 146 [2020-08-19 01:00:50,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:00:50,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-19 01:00:50,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 114. [2020-08-19 01:00:50,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 01:00:50,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-19 01:00:50,465 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 46 [2020-08-19 01:00:50,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:00:50,466 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-19 01:00:50,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:00:50,466 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-19 01:00:50,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 01:00:50,470 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:00:50,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:00:50,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:00:50,471 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:00:50,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:00:50,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1455677075, now seen corresponding path program 1 times [2020-08-19 01:00:50,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:00:50,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249008192] [2020-08-19 01:00:50,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:00:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:50,820 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:00:50,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:00:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:50,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:00:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:50,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:00:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:50,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:00:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:50,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:00:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:50,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:00:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:50,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:00:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:50,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:00:50,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249008192] [2020-08-19 01:00:50,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:00:50,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:00:50,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806729131] [2020-08-19 01:00:50,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:00:50,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:00:50,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:00:50,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:00:50,898 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 4 states. [2020-08-19 01:00:51,323 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:00:52,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:00:52,013 INFO L93 Difference]: Finished difference Result 193 states and 235 transitions. [2020-08-19 01:00:52,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:00:52,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 01:00:52,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:00:52,021 INFO L225 Difference]: With dead ends: 193 [2020-08-19 01:00:52,021 INFO L226 Difference]: Without dead ends: 130 [2020-08-19 01:00:52,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:00:52,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-19 01:00:52,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 105. [2020-08-19 01:00:52,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-19 01:00:52,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-08-19 01:00:52,079 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 47 [2020-08-19 01:00:52,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:00:52,079 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-08-19 01:00:52,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:00:52,079 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-08-19 01:00:52,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 01:00:52,081 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:00:52,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:00:52,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:00:52,082 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:00:52,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:00:52,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1980509365, now seen corresponding path program 1 times [2020-08-19 01:00:52,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:00:52,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879295328] [2020-08-19 01:00:52,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:00:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:52,428 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:00:52,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:00:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:52,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:00:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:52,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:00:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:52,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:00:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:52,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:00:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:52,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:00:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:52,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:00:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:00:52,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879295328] [2020-08-19 01:00:52,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:00:52,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:00:52,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062444717] [2020-08-19 01:00:52,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:00:52,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:00:52,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:00:52,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:00:52,603 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 8 states. [2020-08-19 01:00:53,051 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:00:53,345 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:00:53,595 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:00:53,848 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:00:54,536 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:00:55,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:00:55,852 INFO L93 Difference]: Finished difference Result 363 states and 449 transitions. [2020-08-19 01:00:55,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:00:55,853 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 01:00:55,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:00:55,858 INFO L225 Difference]: With dead ends: 363 [2020-08-19 01:00:55,858 INFO L226 Difference]: Without dead ends: 282 [2020-08-19 01:00:55,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:00:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-19 01:00:55,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 216. [2020-08-19 01:00:55,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-19 01:00:55,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-08-19 01:00:55,963 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 51 [2020-08-19 01:00:55,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:00:55,963 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-08-19 01:00:55,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:00:55,963 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-08-19 01:00:55,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 01:00:55,966 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:00:55,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:00:55,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:00:55,966 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:00:55,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:00:55,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1381408640, now seen corresponding path program 1 times [2020-08-19 01:00:55,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:00:55,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252105223] [2020-08-19 01:00:55,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:00:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:56,272 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:00:56,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:00:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:56,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:00:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:56,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:00:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:56,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:00:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:56,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:00:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:56,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:00:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:56,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:00:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:56,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:00:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:00:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:00:56,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252105223] [2020-08-19 01:00:56,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:00:56,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:00:56,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035853791] [2020-08-19 01:00:56,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:00:56,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:00:56,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:00:56,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:00:56,403 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand 12 states. [2020-08-19 01:00:56,817 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:00:57,127 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:00:57,379 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:00:57,616 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:00:58,158 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:00:58,932 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:00:59,270 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:00:59,543 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:00:59,830 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:00,062 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:01:00,388 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:00,639 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:00,890 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:02,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:02,408 INFO L93 Difference]: Finished difference Result 861 states and 1198 transitions. [2020-08-19 01:01:02,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 01:01:02,409 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-19 01:01:02,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:02,416 INFO L225 Difference]: With dead ends: 861 [2020-08-19 01:01:02,416 INFO L226 Difference]: Without dead ends: 669 [2020-08-19 01:01:02,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 01:01:02,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-08-19 01:01:02,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 580. [2020-08-19 01:01:02,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-08-19 01:01:02,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-08-19 01:01:02,566 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 57 [2020-08-19 01:01:02,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:02,567 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-08-19 01:01:02,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:01:02,567 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-08-19 01:01:02,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 01:01:02,570 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:02,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:01:02,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:01:02,571 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:02,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:02,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1781576154, now seen corresponding path program 1 times [2020-08-19 01:01:02,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:02,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008390613] [2020-08-19 01:01:02,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:02,872 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:02,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:02,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:02,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:02,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:02,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:02,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:01:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:02,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:01:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:02,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:01:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:02,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 01:01:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:01:02,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008390613] [2020-08-19 01:01:02,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:01:02,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:01:02,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702678115] [2020-08-19 01:01:02,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:01:02,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:02,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:01:02,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:01:02,978 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 6 states. [2020-08-19 01:01:03,489 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:05,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:05,090 INFO L93 Difference]: Finished difference Result 1441 states and 1939 transitions. [2020-08-19 01:01:05,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 01:01:05,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 01:01:05,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:05,104 INFO L225 Difference]: With dead ends: 1441 [2020-08-19 01:01:05,105 INFO L226 Difference]: Without dead ends: 885 [2020-08-19 01:01:05,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:01:05,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-08-19 01:01:05,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 822. [2020-08-19 01:01:05,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-08-19 01:01:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1040 transitions. [2020-08-19 01:01:05,363 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1040 transitions. Word has length 61 [2020-08-19 01:01:05,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:05,363 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 1040 transitions. [2020-08-19 01:01:05,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:01:05,364 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1040 transitions. [2020-08-19 01:01:05,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 01:01:05,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:05,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:01:05,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:01:05,370 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:05,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:05,371 INFO L82 PathProgramCache]: Analyzing trace with hash -2005608044, now seen corresponding path program 1 times [2020-08-19 01:01:05,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:05,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095935342] [2020-08-19 01:01:05,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:05,691 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:05,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:05,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:05,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:05,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:05,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:05,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:01:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:05,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:01:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:05,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 01:01:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:05,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:05,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:05,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:01:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:05,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 01:01:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:05,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 01:01:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 01:01:05,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095935342] [2020-08-19 01:01:05,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:01:05,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:01:05,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038012834] [2020-08-19 01:01:05,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:01:05,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:05,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:01:05,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:01:05,843 INFO L87 Difference]: Start difference. First operand 822 states and 1040 transitions. Second operand 10 states. [2020-08-19 01:01:06,458 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 01:01:07,031 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:08,656 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:09,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:09,796 INFO L93 Difference]: Finished difference Result 1577 states and 2071 transitions. [2020-08-19 01:01:09,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 01:01:09,797 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 01:01:09,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:09,805 INFO L225 Difference]: With dead ends: 1577 [2020-08-19 01:01:09,806 INFO L226 Difference]: Without dead ends: 1008 [2020-08-19 01:01:09,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-19 01:01:09,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2020-08-19 01:01:09,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 929. [2020-08-19 01:01:09,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-08-19 01:01:10,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1152 transitions. [2020-08-19 01:01:10,006 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1152 transitions. Word has length 88 [2020-08-19 01:01:10,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:10,009 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1152 transitions. [2020-08-19 01:01:10,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:01:10,009 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1152 transitions. [2020-08-19 01:01:10,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-19 01:01:10,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:10,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:01:10,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:01:10,016 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:10,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:10,016 INFO L82 PathProgramCache]: Analyzing trace with hash -248690710, now seen corresponding path program 1 times [2020-08-19 01:01:10,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:10,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351466491] [2020-08-19 01:01:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,314 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:10,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:01:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:01:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 01:01:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 01:01:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 01:01:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 01:01:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 01:01:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 01:01:10,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351466491] [2020-08-19 01:01:10,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:01:10,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:01:10,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660752425] [2020-08-19 01:01:10,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:01:10,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:10,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:01:10,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:01:10,503 INFO L87 Difference]: Start difference. First operand 929 states and 1152 transitions. Second operand 12 states. [2020-08-19 01:01:11,023 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:11,272 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:11,508 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:12,120 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:12,398 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:12,613 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:13,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:13,671 INFO L93 Difference]: Finished difference Result 1933 states and 2512 transitions. [2020-08-19 01:01:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:01:13,672 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-19 01:01:13,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:13,680 INFO L225 Difference]: With dead ends: 1933 [2020-08-19 01:01:13,681 INFO L226 Difference]: Without dead ends: 1028 [2020-08-19 01:01:13,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:01:13,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2020-08-19 01:01:13,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 929. [2020-08-19 01:01:13,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-08-19 01:01:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1148 transitions. [2020-08-19 01:01:13,964 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1148 transitions. Word has length 109 [2020-08-19 01:01:13,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:13,966 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1148 transitions. [2020-08-19 01:01:13,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:01:13,966 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1148 transitions. [2020-08-19 01:01:13,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-19 01:01:13,969 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:13,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:01:13,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:01:13,970 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:13,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:13,970 INFO L82 PathProgramCache]: Analyzing trace with hash 168705896, now seen corresponding path program 1 times [2020-08-19 01:01:13,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:13,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902284646] [2020-08-19 01:01:13,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,273 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:14,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:01:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:01:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 01:01:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 01:01:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 01:01:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 01:01:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 01:01:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 01:01:14,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902284646] [2020-08-19 01:01:14,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:01:14,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:01:14,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205763763] [2020-08-19 01:01:14,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:01:14,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:14,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:01:14,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:01:14,454 INFO L87 Difference]: Start difference. First operand 929 states and 1148 transitions. Second operand 10 states. [2020-08-19 01:01:15,385 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:15,643 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:01:15,889 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:16,122 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:16,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:16,918 INFO L93 Difference]: Finished difference Result 1757 states and 2231 transitions. [2020-08-19 01:01:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:01:16,918 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2020-08-19 01:01:16,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:16,924 INFO L225 Difference]: With dead ends: 1757 [2020-08-19 01:01:16,925 INFO L226 Difference]: Without dead ends: 852 [2020-08-19 01:01:16,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:01:16,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-08-19 01:01:17,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 802. [2020-08-19 01:01:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 802 states. [2020-08-19 01:01:17,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 973 transitions. [2020-08-19 01:01:17,082 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 973 transitions. Word has length 109 [2020-08-19 01:01:17,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:17,083 INFO L479 AbstractCegarLoop]: Abstraction has 802 states and 973 transitions. [2020-08-19 01:01:17,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:01:17,083 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 973 transitions. [2020-08-19 01:01:17,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-19 01:01:17,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:17,086 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:01:17,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:01:17,086 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:17,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:17,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1129880655, now seen corresponding path program 1 times [2020-08-19 01:01:17,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:17,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736077502] [2020-08-19 01:01:17,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,379 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:17,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:01:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:01:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:01:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 01:01:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 01:01:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 01:01:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 01:01:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 01:01:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:01:17,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736077502] [2020-08-19 01:01:17,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:01:17,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:01:17,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882530564] [2020-08-19 01:01:17,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:01:17,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:17,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:01:17,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:01:17,598 INFO L87 Difference]: Start difference. First operand 802 states and 973 transitions. Second operand 12 states. [2020-08-19 01:01:18,174 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:18,973 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:01:19,231 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:19,447 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:19,687 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:19,930 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:20,277 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:20,807 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:21,082 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:21,315 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:22,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:22,747 INFO L93 Difference]: Finished difference Result 1952 states and 2520 transitions. [2020-08-19 01:01:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 01:01:22,750 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-08-19 01:01:22,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:22,758 INFO L225 Difference]: With dead ends: 1952 [2020-08-19 01:01:22,759 INFO L226 Difference]: Without dead ends: 1319 [2020-08-19 01:01:22,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-19 01:01:22,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-08-19 01:01:23,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1155. [2020-08-19 01:01:23,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-08-19 01:01:23,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1419 transitions. [2020-08-19 01:01:23,052 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1419 transitions. Word has length 113 [2020-08-19 01:01:23,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:23,053 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1419 transitions. [2020-08-19 01:01:23,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:01:23,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1419 transitions. [2020-08-19 01:01:23,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 01:01:23,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:23,061 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:01:23,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:01:23,062 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:23,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:23,063 INFO L82 PathProgramCache]: Analyzing trace with hash -2054287532, now seen corresponding path program 1 times [2020-08-19 01:01:23,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:23,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433824251] [2020-08-19 01:01:23,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,352 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:23,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:01:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:01:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:01:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 01:01:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 01:01:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:01:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 01:01:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 01:01:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 01:01:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-19 01:01:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-08-19 01:01:23,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433824251] [2020-08-19 01:01:23,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:01:23,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 01:01:23,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453354846] [2020-08-19 01:01:23,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:01:23,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:23,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:01:23,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:01:23,548 INFO L87 Difference]: Start difference. First operand 1155 states and 1419 transitions. Second operand 13 states. [2020-08-19 01:01:24,058 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:24,306 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:24,550 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:01:25,124 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:25,992 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:27,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:27,066 INFO L93 Difference]: Finished difference Result 1952 states and 2448 transitions. [2020-08-19 01:01:27,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-19 01:01:27,069 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 146 [2020-08-19 01:01:27,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:27,079 INFO L225 Difference]: With dead ends: 1952 [2020-08-19 01:01:27,080 INFO L226 Difference]: Without dead ends: 1017 [2020-08-19 01:01:27,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2020-08-19 01:01:27,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2020-08-19 01:01:27,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 739. [2020-08-19 01:01:27,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-08-19 01:01:27,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 854 transitions. [2020-08-19 01:01:27,240 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 854 transitions. Word has length 146 [2020-08-19 01:01:27,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:27,241 INFO L479 AbstractCegarLoop]: Abstraction has 739 states and 854 transitions. [2020-08-19 01:01:27,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:01:27,241 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 854 transitions. [2020-08-19 01:01:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 01:01:27,244 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:27,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:01:27,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:01:27,245 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:27,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:27,248 INFO L82 PathProgramCache]: Analyzing trace with hash -793208668, now seen corresponding path program 2 times [2020-08-19 01:01:27,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:27,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264820617] [2020-08-19 01:01:27,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,584 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:01:27,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:01:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:01:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:01:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:01:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:01:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:01:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:01:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 01:01:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 01:01:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:01:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:01:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:01:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 01:01:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-19 01:01:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-19 01:01:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:01:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-19 01:01:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-19 01:01:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:01:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 37 proven. 18 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-19 01:01:27,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264820617] [2020-08-19 01:01:27,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:01:27,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 01:01:27,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999505472] [2020-08-19 01:01:27,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 01:01:27,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:01:27,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 01:01:27,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:01:27,811 INFO L87 Difference]: Start difference. First operand 739 states and 854 transitions. Second operand 14 states. [2020-08-19 01:01:28,343 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:29,038 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:29,565 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:29,851 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:30,148 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:30,407 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:30,710 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:30,986 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:01:32,249 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:01:32,538 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:01:33,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:01:33,439 INFO L93 Difference]: Finished difference Result 1618 states and 2050 transitions. [2020-08-19 01:01:33,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 01:01:33,440 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 152 [2020-08-19 01:01:33,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:01:33,448 INFO L225 Difference]: With dead ends: 1618 [2020-08-19 01:01:33,448 INFO L226 Difference]: Without dead ends: 1125 [2020-08-19 01:01:33,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-19 01:01:33,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-19 01:01:33,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 728. [2020-08-19 01:01:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-08-19 01:01:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 848 transitions. [2020-08-19 01:01:33,653 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 848 transitions. Word has length 152 [2020-08-19 01:01:33,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:01:33,656 INFO L479 AbstractCegarLoop]: Abstraction has 728 states and 848 transitions. [2020-08-19 01:01:33,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 01:01:33,656 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 848 transitions. [2020-08-19 01:01:33,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-19 01:01:33,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:01:33,659 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:01:33,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:01:33,660 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:01:33,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:01:33,660 INFO L82 PathProgramCache]: Analyzing trace with hash -127576802, now seen corresponding path program 3 times [2020-08-19 01:01:33,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:01:33,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900176282] [2020-08-19 01:01:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:01:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:01:33,750 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:01:33,751 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:01:33,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:01:33,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:01:33 BoogieIcfgContainer [2020-08-19 01:01:33,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:01:33,801 INFO L168 Benchmark]: Toolchain (without parser) took 47305.25 ms. Allocated memory was 140.0 MB in the beginning and 788.5 MB in the end (delta: 648.5 MB). Free memory was 100.8 MB in the beginning and 645.0 MB in the end (delta: -544.2 MB). Peak memory consumption was 104.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:01:33,802 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 01:01:33,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.83 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 173.6 MB in the end (delta: -73.0 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:01:33,804 INFO L168 Benchmark]: Boogie Preprocessor took 128.07 ms. Allocated memory is still 203.4 MB. Free memory was 173.6 MB in the beginning and 169.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-19 01:01:33,807 INFO L168 Benchmark]: RCFGBuilder took 1172.39 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 169.5 MB in the beginning and 202.1 MB in the end (delta: -32.6 MB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:01:33,812 INFO L168 Benchmark]: TraceAbstraction took 45354.96 ms. Allocated memory was 237.0 MB in the beginning and 788.5 MB in the end (delta: 551.6 MB). Free memory was 200.7 MB in the beginning and 645.0 MB in the end (delta: -444.3 MB). Peak memory consumption was 107.2 MB. Max. memory is 7.1 GB. [2020-08-19 01:01:33,816 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 644.83 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 173.6 MB in the end (delta: -73.0 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.07 ms. Allocated memory is still 203.4 MB. Free memory was 173.6 MB in the beginning and 169.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1172.39 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 169.5 MB in the beginning and 202.1 MB in the end (delta: -32.6 MB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45354.96 ms. Allocated memory was 237.0 MB in the beginning and 788.5 MB in the end (delta: 551.6 MB). Free memory was 200.7 MB in the beginning and 645.0 MB in the end (delta: -444.3 MB). Peak memory consumption was 107.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 784]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L148] int pumpRunning = 0; [L149] int systemActive = 1; [L315] int cleanupTimeShifts = 4; [L583] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L824] int waterLevel = 1; [L825] int methaneLevelCritical = 0; [L391] int retValue_acc ; [L392] int tmp ; [L396] FCALL select_helpers() [L397] FCALL select_features() [L398] CALL, EXPR valid_product() [L815] int retValue_acc ; [L818] retValue_acc = 1 [L819] return (retValue_acc); [L398] RET, EXPR valid_product() [L398] tmp = valid_product() [L400] COND TRUE \read(tmp) [L402] FCALL setup() [L403] CALL runTest() [L382] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L842] COND TRUE waterLevel < 2 [L843] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L155] COND FALSE !(\read(pumpRunning)) [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND TRUE ! pumpRunning [L189] CALL, EXPR isHighWaterLevel() [L281] int retValue_acc ; [L282] int tmp ; [L283] int tmp___0 ; [L287] CALL, EXPR isHighWaterSensorDry() [L904] int retValue_acc ; [L907] COND FALSE !(waterLevel < 2) [L911] retValue_acc = 0 [L912] return (retValue_acc); [L287] RET, EXPR isHighWaterSensorDry() [L287] tmp = isHighWaterSensorDry() [L289] COND FALSE !(\read(tmp)) [L292] tmp___0 = 1 [L294] retValue_acc = tmp___0 [L295] return (retValue_acc); [L189] RET, EXPR isHighWaterLevel() [L189] tmp = isHighWaterLevel() [L191] COND TRUE \read(tmp) [L193] CALL activatePump() [L212] pumpRunning = 1 [L193] RET activatePump() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification4_spec__1() [L116] int tmp ; [L117] int tmp___0 ; [L121] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L121] RET, EXPR getWaterLevel() [L121] tmp = getWaterLevel() [L123] COND FALSE !(tmp == 0) [L170] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification4_spec__1() [L116] int tmp ; [L117] int tmp___0 ; [L121] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L121] RET, EXPR getWaterLevel() [L121] tmp = getWaterLevel() [L123] COND FALSE !(tmp == 0) [L170] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification4_spec__1() [L116] int tmp ; [L117] int tmp___0 ; [L121] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L121] RET, EXPR getWaterLevel() [L121] tmp = getWaterLevel() [L123] COND TRUE tmp == 0 [L125] CALL, EXPR isPumpRunning() [L236] int retValue_acc ; [L239] retValue_acc = pumpRunning [L240] return (retValue_acc); [L125] RET, EXPR isPumpRunning() [L125] tmp___0 = isPumpRunning() [L127] COND TRUE \read(tmp___0) [L129] CALL __automaton_fail() [L784] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.2s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 37.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1299 SDtfs, 3708 SDslu, 1935 SDs, 0 SdLazy, 8920 SolverSat, 2691 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 541 GetRequests, 343 SyntacticMatches, 11 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1155occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 1342 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 1127 NumberOfCodeBlocks, 1127 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 968 ConstructedInterpolants, 0 QuantifiedInterpolants, 365007 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 214/252 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...