/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:58:53,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:58:53,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:58:53,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:58:53,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:58:53,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:58:53,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:58:53,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:58:53,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:58:53,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:58:53,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:58:53,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:58:53,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:58:53,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:58:53,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:58:53,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:58:53,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:58:53,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:58:53,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:58:53,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:58:53,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:58:53,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:58:53,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:58:53,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:58:53,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:58:53,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:58:53,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:58:53,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:58:53,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:58:53,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:58:53,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:58:53,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:58:53,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:58:53,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:58:53,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:58:53,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:58:53,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:58:53,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:58:53,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:58:53,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:58:53,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:58:53,233 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 [2020-08-21 17:58:53,257 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:58:53,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:58:53,258 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:58:53,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:58:53,259 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:58:53,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:58:53,259 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:58:53,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:58:53,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:58:53,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:58:53,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:58:53,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:58:53,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:58:53,260 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:58:53,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:58:53,261 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:58:53,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:58:53,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:58:53,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:58:53,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:58:53,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:58:53,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:58:53,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:58:53,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:58:53,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:58:53,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:58:53,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:58:53,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:58:53,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:58:53,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 17:58:53,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:58:53,599 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:58:53,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:58:53,604 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:58:53,605 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:58:53,605 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-21 17:58:53,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df9286203/27ae917609274994bf56f3e8e6cad5a0/FLAGc1c6c91ee [2020-08-21 17:58:54,158 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:58:54,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-21 17:58:54,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df9286203/27ae917609274994bf56f3e8e6cad5a0/FLAGc1c6c91ee [2020-08-21 17:58:54,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df9286203/27ae917609274994bf56f3e8e6cad5a0 [2020-08-21 17:58:54,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:58:54,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:58:54,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:58:54,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:58:54,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:58:54,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:58:54" (1/1) ... [2020-08-21 17:58:54,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750e1b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:54, skipping insertion in model container [2020-08-21 17:58:54,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:58:54" (1/1) ... [2020-08-21 17:58:54,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:58:54,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:58:55,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:58:55,059 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:58:55,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:58:55,188 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:58:55,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:55 WrapperNode [2020-08-21 17:58:55,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:58:55,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:58:55,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:58:55,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:58:55,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:55" (1/1) ... [2020-08-21 17:58:55,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:55" (1/1) ... [2020-08-21 17:58:55,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:55" (1/1) ... [2020-08-21 17:58:55,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:55" (1/1) ... [2020-08-21 17:58:55,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:55" (1/1) ... [2020-08-21 17:58:55,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:55" (1/1) ... [2020-08-21 17:58:55,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:55" (1/1) ... [2020-08-21 17:58:55,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:58:55,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:58:55,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:58:55,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:58:55,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:55" (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 [2020-08-21 17:58:55,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:58:55,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:58:55,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:58:55,375 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:58:55,375 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:58:55,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:58:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:58:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:58:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:58:55,377 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:58:55,377 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:58:55,378 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:58:55,378 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 17:58:55,378 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:58:55,378 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:58:55,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:58:55,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:58:55,380 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:58:55,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:58:55,380 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 17:58:55,380 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:58:55,380 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:58:55,380 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:58:55,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:58:55,381 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:58:55,381 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:58:55,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:58:55,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:58:55,382 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:58:55,382 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:58:55,382 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:58:55,383 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:58:55,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:58:55,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:58:55,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:58:55,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:58:55,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:58:55,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:58:55,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 17:58:55,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:58:55,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:58:55,384 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:58:55,384 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:58:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:58:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:58:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:58:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:58:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:58:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:58:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:58:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:58:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:58:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:58:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:58:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:58:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 17:58:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:58:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:58:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:58:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:58:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:58:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:58:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:58:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 17:58:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:58:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:58:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:58:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 17:58:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:58:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:58:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:58:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:58:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:58:55,391 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:58:55,391 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:58:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:58:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:58:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:58:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:58:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:58:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:58:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:58:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:58:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:58:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:58:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:58:55,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:58:55,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:58:55,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:58:55,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:58:55,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:58:55,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:58:56,513 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:58:56,513 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:58:56,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:58:56 BoogieIcfgContainer [2020-08-21 17:58:56,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:58:56,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:58:56,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:58:56,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:58:56,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:58:54" (1/3) ... [2020-08-21 17:58:56,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4c9cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:58:56, skipping insertion in model container [2020-08-21 17:58:56,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:55" (2/3) ... [2020-08-21 17:58:56,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4c9cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:58:56, skipping insertion in model container [2020-08-21 17:58:56,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:58:56" (3/3) ... [2020-08-21 17:58:56,533 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2020-08-21 17:58:56,544 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:58:56,554 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:58:56,568 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:58:56,593 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:58:56,593 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:58:56,593 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:58:56,594 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:58:56,594 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:58:56,594 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:58:56,594 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:58:56,595 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:58:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-21 17:58:56,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 17:58:56,631 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:56,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:58:56,633 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:56,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:56,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2020-08-21 17:58:56,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:56,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518590943] [2020-08-21 17:58:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:57,315 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:58:57,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:57,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:57,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:57,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:57,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:57,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:58:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:57,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:58:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:57,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:58:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:57,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:58:57,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518590943] [2020-08-21 17:58:57,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:58:57,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:58:57,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087357080] [2020-08-21 17:58:57,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:58:57,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:57,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:58:57,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:58:57,471 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-21 17:58:58,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:58:58,639 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-08-21 17:58:58,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:58:58,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 17:58:58,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:58:58,657 INFO L225 Difference]: With dead ends: 296 [2020-08-21 17:58:58,657 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 17:58:58,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:58:58,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 17:58:58,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-21 17:58:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-21 17:58:58,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2020-08-21 17:58:58,757 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2020-08-21 17:58:58,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:58:58,758 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2020-08-21 17:58:58,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:58:58,758 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2020-08-21 17:58:58,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 17:58:58,762 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:58:58,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:58:58,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:58:58,763 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:58:58,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:58:58,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2020-08-21 17:58:58,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:58:58,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628067505] [2020-08-21 17:58:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:58:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:59,076 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:58:59,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:58:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:59,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:58:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:59,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:58:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:59,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:58:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:59,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:58:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:59,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:58:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:59,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:58:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:59,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:58:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:58:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:58:59,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628067505] [2020-08-21 17:58:59,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:58:59,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:58:59,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503657600] [2020-08-21 17:58:59,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:58:59,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:58:59,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:58:59,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:58:59,127 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2020-08-21 17:58:59,564 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:59:00,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:59:00,330 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2020-08-21 17:59:00,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:59:00,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 17:59:00,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:59:00,336 INFO L225 Difference]: With dead ends: 225 [2020-08-21 17:59:00,337 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 17:59:00,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:59:00,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 17:59:00,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-21 17:59:00,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 17:59:00,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-21 17:59:00,375 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2020-08-21 17:59:00,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:59:00,376 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-21 17:59:00,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:59:00,376 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-21 17:59:00,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 17:59:00,378 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:59:00,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:59:00,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:59:00,379 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:59:00,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:59:00,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2020-08-21 17:59:00,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:59:00,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127887055] [2020-08-21 17:59:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:59:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,681 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:59:00,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:59:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:59:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:59:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:59:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:59:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:59:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:59:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 17:59:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:59:00,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127887055] [2020-08-21 17:59:00,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:59:00,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:59:00,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420417637] [2020-08-21 17:59:00,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:59:00,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:59:00,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:59:00,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:59:00,814 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2020-08-21 17:59:01,191 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:59:01,491 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:01,728 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:01,966 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:03,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:59:03,095 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-21 17:59:03,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 17:59:03,101 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 17:59:03,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:59:03,104 INFO L225 Difference]: With dead ends: 238 [2020-08-21 17:59:03,104 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 17:59:03,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:59:03,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 17:59:03,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-21 17:59:03,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 17:59:03,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2020-08-21 17:59:03,141 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2020-08-21 17:59:03,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:59:03,142 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2020-08-21 17:59:03,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:59:03,142 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2020-08-21 17:59:03,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 17:59:03,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:59:03,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:59:03,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:59:03,145 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:59:03,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:59:03,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2020-08-21 17:59:03,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:59:03,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770210024] [2020-08-21 17:59:03,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:59:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:03,473 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:59:03,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:59:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:03,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:59:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:03,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:59:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:03,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:59:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:03,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:59:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:03,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:59:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:03,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:59:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:03,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 17:59:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:03,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 17:59:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:03,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 17:59:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:59:03,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770210024] [2020-08-21 17:59:03,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:59:03,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:59:03,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86203938] [2020-08-21 17:59:03,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:59:03,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:59:03,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:59:03,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:59:03,556 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2020-08-21 17:59:03,887 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:59:05,050 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:59:05,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:59:05,669 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2020-08-21 17:59:05,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:59:05,674 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-08-21 17:59:05,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:59:05,677 INFO L225 Difference]: With dead ends: 338 [2020-08-21 17:59:05,678 INFO L226 Difference]: Without dead ends: 244 [2020-08-21 17:59:05,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:59:05,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-21 17:59:05,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-21 17:59:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-21 17:59:05,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2020-08-21 17:59:05,738 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2020-08-21 17:59:05,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:59:05,739 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2020-08-21 17:59:05,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:59:05,739 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2020-08-21 17:59:05,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-08-21 17:59:05,741 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:59:05,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:59:05,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:59:05,742 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:59:05,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:59:05,742 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2020-08-21 17:59:05,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:59:05,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704750554] [2020-08-21 17:59:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:59:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:06,072 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:59:06,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:59:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:06,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:59:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:06,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:59:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:06,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:59:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:06,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:59:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:06,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:59:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:06,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:59:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:06,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:59:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:06,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:59:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:06,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 17:59:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:06,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 17:59:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:06,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 17:59:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:06,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:59:06,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704750554] [2020-08-21 17:59:06,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:59:06,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:59:06,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921084395] [2020-08-21 17:59:06,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:59:06,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:59:06,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:59:06,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:59:06,163 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2020-08-21 17:59:06,561 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:59:07,906 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:08,183 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:08,426 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:08,668 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:59:09,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:59:09,318 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2020-08-21 17:59:09,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 17:59:09,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-08-21 17:59:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:59:09,326 INFO L225 Difference]: With dead ends: 555 [2020-08-21 17:59:09,327 INFO L226 Difference]: Without dead ends: 378 [2020-08-21 17:59:09,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:59:09,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-08-21 17:59:09,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2020-08-21 17:59:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-21 17:59:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2020-08-21 17:59:09,400 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2020-08-21 17:59:09,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:59:09,400 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2020-08-21 17:59:09,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:59:09,401 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2020-08-21 17:59:09,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 17:59:09,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:59:09,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:59:09,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:59:09,403 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:59:09,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:59:09,404 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2020-08-21 17:59:09,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:59:09,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695405163] [2020-08-21 17:59:09,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:59:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,679 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:59:09,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:59:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:59:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:59:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:59:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:59:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:59:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:59:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:59:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:59:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:59:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 17:59:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 17:59:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 17:59:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:59:09,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695405163] [2020-08-21 17:59:09,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:59:09,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:59:09,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450800981] [2020-08-21 17:59:09,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:59:09,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:59:09,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:59:09,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:59:09,810 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 9 states. [2020-08-21 17:59:10,169 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:59:10,711 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:59:12,249 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:59:13,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:59:13,776 INFO L93 Difference]: Finished difference Result 815 states and 1039 transitions. [2020-08-21 17:59:13,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 17:59:13,777 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-21 17:59:13,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:59:13,783 INFO L225 Difference]: With dead ends: 815 [2020-08-21 17:59:13,783 INFO L226 Difference]: Without dead ends: 627 [2020-08-21 17:59:13,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-21 17:59:13,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-08-21 17:59:13,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 556. [2020-08-21 17:59:13,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-21 17:59:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 666 transitions. [2020-08-21 17:59:13,894 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 666 transitions. Word has length 84 [2020-08-21 17:59:13,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:59:13,895 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 666 transitions. [2020-08-21 17:59:13,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:59:13,895 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 666 transitions. [2020-08-21 17:59:13,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 17:59:13,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:59:13,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:59:13,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:59:13,898 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:59:13,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:59:13,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2020-08-21 17:59:13,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:59:13,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712101539] [2020-08-21 17:59:13,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:59:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:14,149 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:59:14,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:59:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:14,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:59:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:14,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:59:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:14,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:59:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:14,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:59:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:14,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:59:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:14,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:59:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:14,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:59:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:14,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:59:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:14,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:59:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:14,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 17:59:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 17:59:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:14,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 17:59:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:59:14,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712101539] [2020-08-21 17:59:14,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:59:14,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:59:14,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192874275] [2020-08-21 17:59:14,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:59:14,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:59:14,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:59:14,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:59:14,290 INFO L87 Difference]: Start difference. First operand 556 states and 666 transitions. Second operand 8 states. [2020-08-21 17:59:15,116 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:15,351 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:15,610 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:16,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:59:16,405 INFO L93 Difference]: Finished difference Result 1006 states and 1249 transitions. [2020-08-21 17:59:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:59:16,405 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-21 17:59:16,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:59:16,410 INFO L225 Difference]: With dead ends: 1006 [2020-08-21 17:59:16,410 INFO L226 Difference]: Without dead ends: 601 [2020-08-21 17:59:16,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:59:16,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-08-21 17:59:16,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 556. [2020-08-21 17:59:16,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-21 17:59:16,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 665 transitions. [2020-08-21 17:59:16,546 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 665 transitions. Word has length 84 [2020-08-21 17:59:16,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:59:16,546 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 665 transitions. [2020-08-21 17:59:16,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:59:16,546 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 665 transitions. [2020-08-21 17:59:16,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 17:59:16,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:59:16,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:59:16,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:59:16,549 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:59:16,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:59:16,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2020-08-21 17:59:16,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:59:16,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596743713] [2020-08-21 17:59:16,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:59:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:16,792 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:59:16,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:59:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:16,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:59:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:16,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:59:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:16,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:59:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:16,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:59:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:16,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:59:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:16,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:59:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:16,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:59:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:16,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:59:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:16,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:59:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:16,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 17:59:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:16,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 17:59:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:16,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 17:59:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:59:16,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596743713] [2020-08-21 17:59:16,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:59:16,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 17:59:16,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794120137] [2020-08-21 17:59:16,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:59:16,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:59:16,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:59:16,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:59:16,933 INFO L87 Difference]: Start difference. First operand 556 states and 665 transitions. Second operand 12 states. [2020-08-21 17:59:17,467 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:17,696 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:59:17,912 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:59:18,570 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:59:18,839 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:59:19,113 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:59:19,352 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:59:20,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:59:20,333 INFO L93 Difference]: Finished difference Result 1144 states and 1416 transitions. [2020-08-21 17:59:20,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 17:59:20,334 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-21 17:59:20,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:59:20,338 INFO L225 Difference]: With dead ends: 1144 [2020-08-21 17:59:20,338 INFO L226 Difference]: Without dead ends: 612 [2020-08-21 17:59:20,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-21 17:59:20,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-08-21 17:59:20,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 563. [2020-08-21 17:59:20,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-08-21 17:59:20,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 672 transitions. [2020-08-21 17:59:20,444 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 672 transitions. Word has length 84 [2020-08-21 17:59:20,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:59:20,444 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 672 transitions. [2020-08-21 17:59:20,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:59:20,444 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 672 transitions. [2020-08-21 17:59:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-21 17:59:20,446 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:59:20,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:59:20,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:59:20,447 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:59:20,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:59:20,447 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2020-08-21 17:59:20,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:59:20,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455259118] [2020-08-21 17:59:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:59:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:20,772 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:59:20,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:59:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:20,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:59:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:20,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:59:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:20,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:59:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:59:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:20,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:59:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:20,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:59:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:20,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:59:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:20,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:59:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:20,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:59:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:20,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:59:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:20,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:59:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:21,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 17:59:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:21,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 17:59:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:21,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 17:59:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 17:59:21,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455259118] [2020-08-21 17:59:21,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:59:21,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 17:59:21,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911071162] [2020-08-21 17:59:21,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:59:21,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:59:21,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:59:21,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:59:21,065 INFO L87 Difference]: Start difference. First operand 563 states and 672 transitions. Second operand 12 states. [2020-08-21 17:59:21,647 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:59:22,362 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:59:23,161 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:59:23,471 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:59:23,768 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:59:24,010 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:59:24,290 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:59:24,543 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:59:25,010 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-21 17:59:25,268 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:59:25,584 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:59:25,888 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 17:59:28,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:59:28,027 INFO L93 Difference]: Finished difference Result 1664 states and 2066 transitions. [2020-08-21 17:59:28,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 17:59:28,028 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-21 17:59:28,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:59:28,037 INFO L225 Difference]: With dead ends: 1664 [2020-08-21 17:59:28,037 INFO L226 Difference]: Without dead ends: 1125 [2020-08-21 17:59:28,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-21 17:59:28,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-21 17:59:28,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2020-08-21 17:59:28,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-08-21 17:59:28,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1253 transitions. [2020-08-21 17:59:28,326 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1253 transitions. Word has length 96 [2020-08-21 17:59:28,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:59:28,328 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1253 transitions. [2020-08-21 17:59:28,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:59:28,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1253 transitions. [2020-08-21 17:59:28,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-21 17:59:28,331 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:59:28,331 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:59:28,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:59:28,332 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:59:28,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:59:28,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2020-08-21 17:59:28,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:59:28,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029233272] [2020-08-21 17:59:28,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:59:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,638 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:59:28,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:59:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:59:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:59:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:59:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:59:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:59:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:59:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:59:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:59:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:59:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:59:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:59:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:59:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 17:59:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 17:59:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 17:59:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 17:59:28,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029233272] [2020-08-21 17:59:28,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:59:28,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 17:59:28,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645580843] [2020-08-21 17:59:28,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 17:59:28,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:59:28,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 17:59:28,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:59:28,838 INFO L87 Difference]: Start difference. First operand 1062 states and 1253 transitions. Second operand 14 states. [2020-08-21 17:59:29,458 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:29,697 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:59:29,917 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:59:30,503 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:59:31,313 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:59:31,636 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:32,191 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:32,447 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:59:32,705 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:59:34,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:59:34,620 INFO L93 Difference]: Finished difference Result 2205 states and 2747 transitions. [2020-08-21 17:59:34,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 17:59:34,621 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-08-21 17:59:34,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:59:34,628 INFO L225 Difference]: With dead ends: 2205 [2020-08-21 17:59:34,628 INFO L226 Difference]: Without dead ends: 1167 [2020-08-21 17:59:34,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 17:59:34,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-08-21 17:59:34,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 978. [2020-08-21 17:59:34,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-08-21 17:59:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1149 transitions. [2020-08-21 17:59:34,795 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1149 transitions. Word has length 100 [2020-08-21 17:59:34,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:59:34,795 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1149 transitions. [2020-08-21 17:59:34,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 17:59:34,796 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1149 transitions. [2020-08-21 17:59:34,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-21 17:59:34,798 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:59:34,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:59:34,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:59:34,798 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:59:34,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:59:34,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1799494055, now seen corresponding path program 1 times [2020-08-21 17:59:34,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:59:34,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645984778] [2020-08-21 17:59:34,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:59:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,080 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:59:35,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:59:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:59:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:59:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:59:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:59:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:59:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:59:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:59:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:59:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:59:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:59:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:59:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:59:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 17:59:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 17:59:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 17:59:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:35,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:59:35,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645984778] [2020-08-21 17:59:35,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:59:35,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 17:59:35,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991857939] [2020-08-21 17:59:35,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 17:59:35,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:59:35,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 17:59:35,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:59:35,227 INFO L87 Difference]: Start difference. First operand 978 states and 1149 transitions. Second operand 13 states. [2020-08-21 17:59:35,864 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:36,128 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:59:36,339 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:59:37,436 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:59:37,930 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:38,260 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:59:38,547 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:59:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:59:39,312 INFO L93 Difference]: Finished difference Result 1688 states and 1988 transitions. [2020-08-21 17:59:39,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 17:59:39,313 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-08-21 17:59:39,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:59:39,314 INFO L225 Difference]: With dead ends: 1688 [2020-08-21 17:59:39,314 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 17:59:39,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-21 17:59:39,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 17:59:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 17:59:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 17:59:39,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 17:59:39,320 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2020-08-21 17:59:39,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:59:39,320 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 17:59:39,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 17:59:39,321 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 17:59:39,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 17:59:39,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 17:59:39,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 17:59:40,300 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-21 17:59:42,453 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-21 17:59:42,827 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-21 17:59:43,126 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-21 17:59:43,619 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-21 17:59:44,623 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-21 17:59:45,758 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-21 17:59:45,922 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-21 17:59:46,373 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 40 [2020-08-21 17:59:46,542 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-08-21 17:59:46,800 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-21 17:59:46,965 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-21 17:59:48,068 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-21 17:59:48,244 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-21 17:59:49,029 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-21 17:59:49,312 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 27 [2020-08-21 17:59:49,882 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2020-08-21 17:59:50,792 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2020-08-21 17:59:51,990 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 168 DAG size of output: 30 [2020-08-21 17:59:52,198 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:59:52,314 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2020-08-21 17:59:52,493 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-21 17:59:52,693 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 26 [2020-08-21 17:59:52,857 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1