/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:09:29,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:09:29,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:09:29,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:09:29,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:09:29,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:09:29,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:09:29,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:09:29,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:09:29,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:09:29,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:09:29,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:09:29,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:09:29,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:09:29,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:09:29,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:09:29,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:09:29,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:09:29,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:09:29,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:09:29,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:09:29,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:09:29,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:09:29,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:09:29,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:09:29,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:09:29,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:09:29,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:09:29,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:09:29,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:09:29,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:09:29,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:09:29,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:09:29,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:09:29,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:09:29,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:09:29,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:09:29,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:09:29,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:09:29,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:09:29,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:09:29,421 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 13:09:29,451 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:09:29,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:09:29,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:09:29,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:09:29,457 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:09:29,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:09:29,458 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:09:29,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:09:29,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:09:29,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:09:29,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:09:29,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:09:29,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:09:29,459 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:09:29,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:09:29,459 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:09:29,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:09:29,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:09:29,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:09:29,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:09:29,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:09:29,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:09:29,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:09:29,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:09:29,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:09:29,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:09:29,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:09:29,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:09:29,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:09:29,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-21 13:09:29,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:09:29,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:09:29,840 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:09:29,844 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:09:29,845 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:09:29,846 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-21 13:09:29,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/593f53f08/ab4a5d8bb240402e9377c84cc8a8e5ad/FLAGc22f8de9e [2020-08-21 13:09:30,423 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:09:30,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-21 13:09:30,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/593f53f08/ab4a5d8bb240402e9377c84cc8a8e5ad/FLAGc22f8de9e [2020-08-21 13:09:30,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/593f53f08/ab4a5d8bb240402e9377c84cc8a8e5ad [2020-08-21 13:09:30,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:09:30,704 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:09:30,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:09:30,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:09:30,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:09:30,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:09:30" (1/1) ... [2020-08-21 13:09:30,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c86cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:30, skipping insertion in model container [2020-08-21 13:09:30,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:09:30" (1/1) ... [2020-08-21 13:09:30,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:09:30,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:09:31,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:09:31,204 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:09:31,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:09:31,379 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:09:31,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:31 WrapperNode [2020-08-21 13:09:31,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:09:31,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:09:31,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:09:31,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:09:31,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:31" (1/1) ... [2020-08-21 13:09:31,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:31" (1/1) ... [2020-08-21 13:09:31,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:31" (1/1) ... [2020-08-21 13:09:31,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:31" (1/1) ... [2020-08-21 13:09:31,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:31" (1/1) ... [2020-08-21 13:09:31,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:31" (1/1) ... [2020-08-21 13:09:31,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:31" (1/1) ... [2020-08-21 13:09:31,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:09:31,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:09:31,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:09:31,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:09:31,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:31" (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 13:09:31,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:09:31,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:09:31,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:09:31,528 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:09:31,529 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:09:31,529 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:09:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:09:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:09:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:09:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:09:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 13:09:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:09:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:09:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:09:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:09:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:09:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:09:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 13:09:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:09:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:09:31,534 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:09:31,534 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:09:31,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:09:31,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:09:31,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:09:31,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:09:31,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:09:31,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:09:31,537 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:09:31,537 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:09:31,537 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:09:31,537 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:09:31,538 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 13:09:31,538 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:09:31,538 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:09:31,538 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:09:31,538 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:09:31,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:09:31,539 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:09:31,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:09:31,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 13:09:31,539 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 13:09:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:09:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:09:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:09:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:09:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:09:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:09:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:09:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:09:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:09:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:09:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 13:09:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:09:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:09:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:09:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:09:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:09:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:09:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:09:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:09:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:09:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:09:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:09:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:09:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:09:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:09:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 13:09:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:09:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:09:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:09:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:09:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:09:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:09:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:09:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:09:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:09:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:09:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:09:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:09:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:09:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:09:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:09:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:09:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:09:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 13:09:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:09:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:09:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:09:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:09:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:09:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:09:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 13:09:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 13:09:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:09:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:09:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:09:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:09:32,573 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:09:32,573 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:09:32,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:09:32 BoogieIcfgContainer [2020-08-21 13:09:32,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:09:32,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:09:32,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:09:32,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:09:32,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:09:30" (1/3) ... [2020-08-21 13:09:32,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54044f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:09:32, skipping insertion in model container [2020-08-21 13:09:32,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:31" (2/3) ... [2020-08-21 13:09:32,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54044f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:09:32, skipping insertion in model container [2020-08-21 13:09:32,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:09:32" (3/3) ... [2020-08-21 13:09:32,588 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-08-21 13:09:32,599 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:09:32,607 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:09:32,621 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:09:32,647 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:09:32,647 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:09:32,647 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:09:32,647 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:09:32,648 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:09:32,648 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:09:32,648 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:09:32,648 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:09:32,671 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-21 13:09:32,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 13:09:32,683 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:09:32,685 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 13:09:32,685 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:09:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:09:32,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1727770094, now seen corresponding path program 1 times [2020-08-21 13:09:32,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:09:32,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573644599] [2020-08-21 13:09:32,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:09:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:33,380 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:09:33,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:09:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:33,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:09:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:33,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:09:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:33,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:09:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:33,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:09:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:33,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:09:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:33,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:09:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:33,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:09:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:33,461 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 13:09:33,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573644599] [2020-08-21 13:09:33,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:09:33,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:09:33,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603408225] [2020-08-21 13:09:33,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:09:33,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:09:33,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:09:33,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:09:33,490 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-08-21 13:09:34,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:09:34,818 INFO L93 Difference]: Finished difference Result 350 states and 455 transitions. [2020-08-21 13:09:34,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:09:34,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 13:09:34,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:09:34,850 INFO L225 Difference]: With dead ends: 350 [2020-08-21 13:09:34,850 INFO L226 Difference]: Without dead ends: 188 [2020-08-21 13:09:34,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:09:34,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-21 13:09:34,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-21 13:09:34,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-21 13:09:34,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2020-08-21 13:09:34,964 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 52 [2020-08-21 13:09:34,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:09:34,964 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2020-08-21 13:09:34,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:09:34,965 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2020-08-21 13:09:34,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 13:09:34,968 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:09:34,969 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 13:09:34,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:09:34,969 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:09:34,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:09:34,970 INFO L82 PathProgramCache]: Analyzing trace with hash -23295260, now seen corresponding path program 1 times [2020-08-21 13:09:34,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:09:34,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910217203] [2020-08-21 13:09:34,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:09:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:35,302 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:09:35,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:09:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:35,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:09:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:35,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:09:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:35,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:09:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:35,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:09:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:35,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:09:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:35,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:09:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:35,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:09:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:35,346 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 13:09:35,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910217203] [2020-08-21 13:09:35,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:09:35,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:09:35,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978239439] [2020-08-21 13:09:35,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:09:35,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:09:35,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:09:35,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:09:35,350 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2020-08-21 13:09:35,744 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:09:36,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:09:36,805 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-21 13:09:36,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:09:36,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 13:09:36,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:09:36,813 INFO L225 Difference]: With dead ends: 279 [2020-08-21 13:09:36,814 INFO L226 Difference]: Without dead ends: 172 [2020-08-21 13:09:36,817 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 13:09:36,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-21 13:09:36,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-21 13:09:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-21 13:09:36,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-08-21 13:09:36,866 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 53 [2020-08-21 13:09:36,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:09:36,867 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-08-21 13:09:36,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:09:36,867 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-08-21 13:09:36,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 13:09:36,870 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:09:36,870 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 13:09:36,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:09:36,870 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:09:36,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:09:36,871 INFO L82 PathProgramCache]: Analyzing trace with hash 646991369, now seen corresponding path program 1 times [2020-08-21 13:09:36,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:09:36,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881085239] [2020-08-21 13:09:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:09:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:37,194 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:09:37,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:09:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:37,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:09:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:37,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:09:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:37,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:09:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:37,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:09:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:37,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:09:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:37,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:09:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:37,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 13:09:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:37,302 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 13:09:37,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881085239] [2020-08-21 13:09:37,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:09:37,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:09:37,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095005338] [2020-08-21 13:09:37,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:09:37,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:09:37,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:09:37,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:09:37,309 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2020-08-21 13:09:37,620 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:09:37,910 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:09:38,154 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:09:38,400 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:09:39,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:09:39,871 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2020-08-21 13:09:39,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 13:09:39,873 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 13:09:39,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:09:39,876 INFO L225 Difference]: With dead ends: 292 [2020-08-21 13:09:39,877 INFO L226 Difference]: Without dead ends: 172 [2020-08-21 13:09:39,878 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 13:09:39,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-21 13:09:39,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-21 13:09:39,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-21 13:09:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-21 13:09:39,920 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 58 [2020-08-21 13:09:39,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:09:39,920 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-21 13:09:39,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:09:39,921 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-21 13:09:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-21 13:09:39,924 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:09:39,924 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] [2020-08-21 13:09:39,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:09:39,924 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:09:39,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:09:39,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1077665999, now seen corresponding path program 1 times [2020-08-21 13:09:39,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:09:39,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064846007] [2020-08-21 13:09:39,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:09:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:40,199 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:09:40,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:09:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:40,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:09:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:40,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:09:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:40,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:09:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:40,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:09:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:40,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:09:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:40,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:09:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:40,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:09:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:40,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:09:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:40,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:09:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:40,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 13:09:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:40,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 13:09:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:40,378 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 13:09:40,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064846007] [2020-08-21 13:09:40,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:09:40,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:09:40,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058612587] [2020-08-21 13:09:40,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:09:40,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:09:40,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:09:40,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:09:40,382 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2020-08-21 13:09:40,679 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:09:41,962 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:09:42,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:09:42,806 INFO L93 Difference]: Finished difference Result 407 states and 503 transitions. [2020-08-21 13:09:42,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:09:42,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-08-21 13:09:42,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:09:42,811 INFO L225 Difference]: With dead ends: 407 [2020-08-21 13:09:42,812 INFO L226 Difference]: Without dead ends: 287 [2020-08-21 13:09:42,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:09:42,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-21 13:09:42,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2020-08-21 13:09:42,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-21 13:09:42,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2020-08-21 13:09:42,866 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 76 [2020-08-21 13:09:42,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:09:42,867 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2020-08-21 13:09:42,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:09:42,867 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2020-08-21 13:09:42,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 13:09:42,868 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:09:42,869 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, 1, 1, 1, 1, 1, 1] [2020-08-21 13:09:42,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:09:42,869 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:09:42,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:09:42,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1489636928, now seen corresponding path program 1 times [2020-08-21 13:09:42,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:09:42,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904816998] [2020-08-21 13:09:42,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:09:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,175 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:09:43,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:09:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:09:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:09:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:09:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:09:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:09:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:09:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:09:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:09:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:09:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:09:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 13:09:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 13:09:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 13:09:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,349 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 13:09:43,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904816998] [2020-08-21 13:09:43,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:09:43,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:09:43,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279092778] [2020-08-21 13:09:43,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:09:43,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:09:43,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:09:43,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:09:43,353 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand 8 states. [2020-08-21 13:09:43,724 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:09:45,182 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:09:45,488 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:09:45,743 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:09:45,999 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:09:46,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:09:46,935 INFO L93 Difference]: Finished difference Result 641 states and 791 transitions. [2020-08-21 13:09:46,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 13:09:46,936 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-21 13:09:46,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:09:46,939 INFO L225 Difference]: With dead ends: 641 [2020-08-21 13:09:46,939 INFO L226 Difference]: Without dead ends: 421 [2020-08-21 13:09:46,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 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 13:09:46,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-08-21 13:09:47,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 378. [2020-08-21 13:09:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-08-21 13:09:47,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 436 transitions. [2020-08-21 13:09:47,020 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 436 transitions. Word has length 90 [2020-08-21 13:09:47,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:09:47,020 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 436 transitions. [2020-08-21 13:09:47,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:09:47,021 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 436 transitions. [2020-08-21 13:09:47,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 13:09:47,023 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:09:47,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:09:47,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:09:47,023 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:09:47,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:09:47,024 INFO L82 PathProgramCache]: Analyzing trace with hash -467189990, now seen corresponding path program 1 times [2020-08-21 13:09:47,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:09:47,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898570594] [2020-08-21 13:09:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:09:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:47,278 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:09:47,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:09:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:47,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:09:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:47,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:09:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:47,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:09:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:47,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:09:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:47,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:09:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:47,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:09:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:47,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:09:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:47,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:09:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:47,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:09:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:47,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:09:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:47,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:09:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:47,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 13:09:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:47,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 13:09:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:47,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 13:09:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:47,420 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 13:09:47,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898570594] [2020-08-21 13:09:47,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:09:47,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:09:47,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809433751] [2020-08-21 13:09:47,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:09:47,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:09:47,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:09:47,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:09:47,423 INFO L87 Difference]: Start difference. First operand 378 states and 436 transitions. Second operand 9 states. [2020-08-21 13:09:47,833 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:09:48,367 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:09:50,069 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:09:52,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:09:52,273 INFO L93 Difference]: Finished difference Result 980 states and 1245 transitions. [2020-08-21 13:09:52,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 13:09:52,274 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-21 13:09:52,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:09:52,281 INFO L225 Difference]: With dead ends: 980 [2020-08-21 13:09:52,281 INFO L226 Difference]: Without dead ends: 749 [2020-08-21 13:09:52,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-21 13:09:52,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-21 13:09:52,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2020-08-21 13:09:52,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-21 13:09:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 813 transitions. [2020-08-21 13:09:52,426 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 813 transitions. Word has length 94 [2020-08-21 13:09:52,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:09:52,426 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 813 transitions. [2020-08-21 13:09:52,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:09:52,427 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 813 transitions. [2020-08-21 13:09:52,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 13:09:52,428 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:09:52,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:09:52,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:09:52,429 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:09:52,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:09:52,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1892117019, now seen corresponding path program 1 times [2020-08-21 13:09:52,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:09:52,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204489190] [2020-08-21 13:09:52,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:09:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,664 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:09:52,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:09:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:09:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:09:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:09:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:09:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:09:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:09:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:09:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:09:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:09:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:09:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:09:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 13:09:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 13:09:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 13:09:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,829 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 13:09:52,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204489190] [2020-08-21 13:09:52,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:09:52,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:09:52,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495555511] [2020-08-21 13:09:52,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:09:52,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:09:52,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:09:52,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:09:52,832 INFO L87 Difference]: Start difference. First operand 678 states and 813 transitions. Second operand 8 states. [2020-08-21 13:09:53,645 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:09:53,881 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:09:54,115 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:09:55,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:09:55,369 INFO L93 Difference]: Finished difference Result 1250 states and 1552 transitions. [2020-08-21 13:09:55,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 13:09:55,370 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-21 13:09:55,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:09:55,378 INFO L225 Difference]: With dead ends: 1250 [2020-08-21 13:09:55,378 INFO L226 Difference]: Without dead ends: 723 [2020-08-21 13:09:55,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:09:55,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-08-21 13:09:55,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2020-08-21 13:09:55,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-21 13:09:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 812 transitions. [2020-08-21 13:09:55,524 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 812 transitions. Word has length 94 [2020-08-21 13:09:55,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:09:55,525 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 812 transitions. [2020-08-21 13:09:55,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:09:55,525 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 812 transitions. [2020-08-21 13:09:55,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 13:09:55,528 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:09:55,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:09:55,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:09:55,529 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:09:55,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:09:55,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1743318755, now seen corresponding path program 1 times [2020-08-21 13:09:55,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:09:55,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036930438] [2020-08-21 13:09:55,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:09:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:55,822 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:09:55,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:09:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:55,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:09:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:55,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:09:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:55,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:09:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:55,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:09:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:55,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:09:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:55,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:09:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:55,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:09:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:55,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:09:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:55,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:09:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:55,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:09:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:55,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:09:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 13:09:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:55,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 13:09:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:55,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 13:09:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:56,001 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 13:09:56,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036930438] [2020-08-21 13:09:56,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:09:56,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:09:56,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725407756] [2020-08-21 13:09:56,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:09:56,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:09:56,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:09:56,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:09:56,003 INFO L87 Difference]: Start difference. First operand 678 states and 812 transitions. Second operand 12 states. [2020-08-21 13:09:56,430 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:09:56,668 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:09:56,883 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:09:57,577 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:09:57,823 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:09:58,088 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:09:58,329 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:09:59,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:09:59,568 INFO L93 Difference]: Finished difference Result 1343 states and 1658 transitions. [2020-08-21 13:09:59,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 13:09:59,569 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-21 13:09:59,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:09:59,575 INFO L225 Difference]: With dead ends: 1343 [2020-08-21 13:09:59,576 INFO L226 Difference]: Without dead ends: 689 [2020-08-21 13:09:59,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 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 13:09:59,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-08-21 13:09:59,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 649. [2020-08-21 13:09:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 13:09:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 772 transitions. [2020-08-21 13:09:59,732 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 772 transitions. Word has length 94 [2020-08-21 13:09:59,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:09:59,732 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 772 transitions. [2020-08-21 13:09:59,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:09:59,732 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 772 transitions. [2020-08-21 13:09:59,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-21 13:09:59,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:09:59,736 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:09:59,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:09:59,736 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:09:59,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:09:59,737 INFO L82 PathProgramCache]: Analyzing trace with hash -794227168, now seen corresponding path program 1 times [2020-08-21 13:09:59,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:09:59,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294686207] [2020-08-21 13:09:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:09:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:00,080 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:10:00,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:10:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:00,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:10:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:00,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:10:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:00,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:10:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:00,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:10:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:00,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:10:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:00,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:10:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:00,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:00,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:00,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:00,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:10:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:00,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:10:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:00,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 13:10:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:00,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 13:10:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:00,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 13:10:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:00,290 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 13:10:00,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294686207] [2020-08-21 13:10:00,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:10:00,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 13:10:00,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394354351] [2020-08-21 13:10:00,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 13:10:00,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:10:00,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 13:10:00,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:10:00,294 INFO L87 Difference]: Start difference. First operand 649 states and 772 transitions. Second operand 13 states. [2020-08-21 13:10:01,165 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:10:01,517 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:10:01,745 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:10:02,809 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:10:03,434 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:10:03,761 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:10:04,050 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:10:04,772 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:10:05,095 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:10:05,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:10:05,750 INFO L93 Difference]: Finished difference Result 1307 states and 1571 transitions. [2020-08-21 13:10:05,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 13:10:05,751 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-08-21 13:10:05,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:10:05,756 INFO L225 Difference]: With dead ends: 1307 [2020-08-21 13:10:05,756 INFO L226 Difference]: Without dead ends: 682 [2020-08-21 13:10:05,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-21 13:10:05,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-21 13:10:05,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2020-08-21 13:10:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 13:10:05,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 756 transitions. [2020-08-21 13:10:05,945 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 756 transitions. Word has length 95 [2020-08-21 13:10:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:10:05,948 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 756 transitions. [2020-08-21 13:10:05,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 13:10:05,949 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 756 transitions. [2020-08-21 13:10:05,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-21 13:10:05,954 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:10:05,957 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:10:05,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:10:05,958 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:10:05,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:10:05,958 INFO L82 PathProgramCache]: Analyzing trace with hash -252196105, now seen corresponding path program 1 times [2020-08-21 13:10:05,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:10:05,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888696992] [2020-08-21 13:10:05,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:10:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,276 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:10:06,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:10:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:10:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:10:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:10:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:10:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:10:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:10:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:10:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 13:10:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:10:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 13:10:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 13:10:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:10:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:10:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 13:10:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-21 13:10:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-21 13:10:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-21 13:10:06,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888696992] [2020-08-21 13:10:06,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:10:06,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 13:10:06,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346005718] [2020-08-21 13:10:06,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:10:06,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:10:06,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:10:06,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:10:06,474 INFO L87 Difference]: Start difference. First operand 649 states and 756 transitions. Second operand 10 states. [2020-08-21 13:10:07,274 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:10:07,507 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:10:07,739 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:10:07,961 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:10:08,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:10:08,964 INFO L93 Difference]: Finished difference Result 1216 states and 1446 transitions. [2020-08-21 13:10:08,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:10:08,965 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2020-08-21 13:10:08,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:10:08,969 INFO L225 Difference]: With dead ends: 1216 [2020-08-21 13:10:08,969 INFO L226 Difference]: Without dead ends: 670 [2020-08-21 13:10:08,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:10:08,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-21 13:10:09,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 649. [2020-08-21 13:10:09,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 13:10:09,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 754 transitions. [2020-08-21 13:10:09,082 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 754 transitions. Word has length 139 [2020-08-21 13:10:09,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:10:09,083 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 754 transitions. [2020-08-21 13:10:09,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:10:09,083 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 754 transitions. [2020-08-21 13:10:09,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-21 13:10:09,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:10:09,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:10:09,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:10:09,086 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:10:09,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:10:09,087 INFO L82 PathProgramCache]: Analyzing trace with hash 2084196405, now seen corresponding path program 1 times [2020-08-21 13:10:09,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:10:09,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473354719] [2020-08-21 13:10:09,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:10:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,463 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:10:09,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:10:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:10:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:10:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:10:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:10:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:10:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:10:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:10:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 13:10:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:10:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 13:10:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 13:10:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:10:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:10:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 13:10:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-21 13:10:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-21 13:10:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:09,700 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-21 13:10:09,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473354719] [2020-08-21 13:10:09,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:10:09,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 13:10:09,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602226112] [2020-08-21 13:10:09,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:10:09,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:10:09,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:10:09,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:10:09,705 INFO L87 Difference]: Start difference. First operand 649 states and 754 transitions. Second operand 12 states. [2020-08-21 13:10:10,262 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:10:10,508 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:10:10,737 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:10:11,414 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:10:11,690 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:10:11,929 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:10:13,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:10:13,104 INFO L93 Difference]: Finished difference Result 1124 states and 1336 transitions. [2020-08-21 13:10:13,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:10:13,104 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-08-21 13:10:13,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:10:13,108 INFO L225 Difference]: With dead ends: 1124 [2020-08-21 13:10:13,109 INFO L226 Difference]: Without dead ends: 573 [2020-08-21 13:10:13,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:10:13,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-21 13:10:13,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 552. [2020-08-21 13:10:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-21 13:10:13,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 639 transitions. [2020-08-21 13:10:13,220 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 639 transitions. Word has length 139 [2020-08-21 13:10:13,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:10:13,220 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 639 transitions. [2020-08-21 13:10:13,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:10:13,220 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 639 transitions. [2020-08-21 13:10:13,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-21 13:10:13,222 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:10:13,222 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:13,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 13:10:13,223 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:10:13,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:10:13,223 INFO L82 PathProgramCache]: Analyzing trace with hash 2081124794, now seen corresponding path program 1 times [2020-08-21 13:10:13,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:10:13,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154992141] [2020-08-21 13:10:13,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:10:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,483 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:10:13,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:10:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:10:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:10:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:10:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:10:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:10:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:10:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:10:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:10:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 13:10:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:10:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 13:10:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 13:10:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:10:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:10:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 13:10:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 13:10:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 13:10:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-21 13:10:13,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154992141] [2020-08-21 13:10:13,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:10:13,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 13:10:13,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551522812] [2020-08-21 13:10:13,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:10:13,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:10:13,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:10:13,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:10:13,734 INFO L87 Difference]: Start difference. First operand 552 states and 639 transitions. Second operand 11 states. [2020-08-21 13:10:14,328 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:10:14,978 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:10:15,980 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:10:16,506 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-21 13:10:17,001 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-21 13:10:17,241 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:10:18,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:10:18,922 INFO L93 Difference]: Finished difference Result 1637 states and 1961 transitions. [2020-08-21 13:10:18,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 13:10:18,922 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-08-21 13:10:18,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:10:18,929 INFO L225 Difference]: With dead ends: 1637 [2020-08-21 13:10:18,929 INFO L226 Difference]: Without dead ends: 1109 [2020-08-21 13:10:18,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-21 13:10:18,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-08-21 13:10:19,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1077. [2020-08-21 13:10:19,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-08-21 13:10:19,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1232 transitions. [2020-08-21 13:10:19,173 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1232 transitions. Word has length 143 [2020-08-21 13:10:19,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:10:19,175 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1232 transitions. [2020-08-21 13:10:19,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:10:19,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1232 transitions. [2020-08-21 13:10:19,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-21 13:10:19,179 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:10:19,180 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:10:19,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 13:10:19,180 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:10:19,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:10:19,181 INFO L82 PathProgramCache]: Analyzing trace with hash -708969378, now seen corresponding path program 1 times [2020-08-21 13:10:19,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:10:19,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927004926] [2020-08-21 13:10:19,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:10:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,513 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:10:19,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:10:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:10:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:10:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:10:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:10:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:10:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:10:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:10:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:10:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:10:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 13:10:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:10:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 13:10:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 13:10:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:10:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:10:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 13:10:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-21 13:10:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 13:10:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 13:10:19,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927004926] [2020-08-21 13:10:19,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:10:19,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 13:10:19,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132300201] [2020-08-21 13:10:19,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 13:10:19,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:10:19,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 13:10:19,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:10:19,722 INFO L87 Difference]: Start difference. First operand 1077 states and 1232 transitions. Second operand 15 states. [2020-08-21 13:10:20,298 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:10:20,528 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:10:20,761 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:10:21,351 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:10:22,488 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:10:22,817 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:10:23,101 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:10:23,364 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:10:25,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:10:25,411 INFO L93 Difference]: Finished difference Result 2187 states and 2605 transitions. [2020-08-21 13:10:25,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 13:10:25,417 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-21 13:10:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:10:25,424 INFO L225 Difference]: With dead ends: 2187 [2020-08-21 13:10:25,424 INFO L226 Difference]: Without dead ends: 1134 [2020-08-21 13:10:25,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2020-08-21 13:10:25,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-08-21 13:10:25,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1011. [2020-08-21 13:10:25,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-08-21 13:10:25,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1153 transitions. [2020-08-21 13:10:25,608 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1153 transitions. Word has length 147 [2020-08-21 13:10:25,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:10:25,609 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1153 transitions. [2020-08-21 13:10:25,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 13:10:25,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1153 transitions. [2020-08-21 13:10:25,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-21 13:10:25,611 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:10:25,612 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:10:25,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 13:10:25,612 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:10:25,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:10:25,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1161992490, now seen corresponding path program 1 times [2020-08-21 13:10:25,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:10:25,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386240146] [2020-08-21 13:10:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:10:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:25,918 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:10:25,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:10:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:25,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:10:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:25,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:10:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:25,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:10:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:25,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:10:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:25,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:10:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:25,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:10:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:25,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:10:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:10:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 13:10:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:10:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:10:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 13:10:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 13:10:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:10:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:10:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:10:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 13:10:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 13:10:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 13:10:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:10:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-21 13:10:26,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386240146] [2020-08-21 13:10:26,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:10:26,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 13:10:26,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624374613] [2020-08-21 13:10:26,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 13:10:26,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:10:26,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 13:10:26,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:10:26,172 INFO L87 Difference]: Start difference. First operand 1011 states and 1153 transitions. Second operand 15 states. [2020-08-21 13:10:26,565 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:10:27,246 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:10:28,412 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:10:28,745 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189