/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:30:12,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:30:12,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:30:12,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:30:12,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:30:12,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:30:12,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:30:12,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:30:12,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:30:12,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:30:12,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:30:12,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:30:12,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:30:12,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:30:12,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:30:12,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:30:12,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:30:12,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:30:12,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:30:12,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:30:12,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:30:12,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:30:12,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:30:12,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:30:12,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:30:12,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:30:12,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:30:12,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:30:12,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:30:12,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:30:12,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:30:12,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:30:12,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:30:12,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:30:12,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:30:12,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:30:12,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:30:12,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:30:12,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:30:12,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:30:12,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:30:12,299 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 [2020-08-18 18:30:12,350 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:30:12,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:30:12,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:30:12,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:30:12,355 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:30:12,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:30:12,355 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:30:12,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:30:12,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:30:12,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:30:12,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:30:12,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:30:12,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:30:12,360 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:30:12,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:30:12,360 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:30:12,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:30:12,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:30:12,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:30:12,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:30:12,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:30:12,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:30:12,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:30:12,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:30:12,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:30:12,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:30:12,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:30:12,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:30:12,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:30:12,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:30:12,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:30:12,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:30:12,723 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:30:12,725 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:30:12,725 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:30:12,726 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c [2020-08-18 18:30:12,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eede1a4a0/15d65b5f0c524f4782236c637aa1496e/FLAG850c2d149 [2020-08-18 18:30:13,294 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:30:13,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c [2020-08-18 18:30:13,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eede1a4a0/15d65b5f0c524f4782236c637aa1496e/FLAG850c2d149 [2020-08-18 18:30:13,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eede1a4a0/15d65b5f0c524f4782236c637aa1496e [2020-08-18 18:30:13,641 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:30:13,643 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:30:13,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:30:13,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:30:13,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:30:13,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:30:13" (1/1) ... [2020-08-18 18:30:13,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43518757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:13, skipping insertion in model container [2020-08-18 18:30:13,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:30:13" (1/1) ... [2020-08-18 18:30:13,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:30:13,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:30:14,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:30:14,208 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:30:14,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:30:14,322 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:30:14,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:14 WrapperNode [2020-08-18 18:30:14,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:30:14,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:30:14,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:30:14,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:30:14,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:14" (1/1) ... [2020-08-18 18:30:14,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:14" (1/1) ... [2020-08-18 18:30:14,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:14" (1/1) ... [2020-08-18 18:30:14,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:14" (1/1) ... [2020-08-18 18:30:14,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:14" (1/1) ... [2020-08-18 18:30:14,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:14" (1/1) ... [2020-08-18 18:30:14,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:14" (1/1) ... [2020-08-18 18:30:14,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:30:14,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:30:14,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:30:14,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:30:14,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:14" (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 [2020-08-18 18:30:14,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:30:14,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:30:14,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 18:30:14,527 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 18:30:14,527 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 18:30:14,528 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 18:30:14,528 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 18:30:14,528 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:30:14,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 18:30:14,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 18:30:14,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 18:30:14,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 18:30:14,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 18:30:14,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 18:30:14,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 18:30:14,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 18:30:14,531 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 18:30:14,531 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 18:30:14,531 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 18:30:14,531 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 18:30:14,532 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 18:30:14,532 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 18:30:14,533 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 18:30:14,533 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 18:30:14,533 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 18:30:14,534 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 18:30:14,534 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 18:30:14,534 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 18:30:14,534 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 18:30:14,534 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 18:30:14,534 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 18:30:14,534 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 18:30:14,535 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 18:30:14,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 18:30:14,535 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 18:30:14,535 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 18:30:14,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 18:30:14,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 18:30:14,536 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 18:30:14,536 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 18:30:14,536 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 18:30:14,536 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 18:30:14,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 18:30:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:30:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:30:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 18:30:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 18:30:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 18:30:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 18:30:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 18:30:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 18:30:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 18:30:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 18:30:14,538 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 18:30:14,539 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 18:30:14,539 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 18:30:14,539 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 18:30:14,539 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 18:30:14,540 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 18:30:14,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:30:14,540 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 18:30:14,540 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 18:30:14,541 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 18:30:14,541 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 18:30:14,541 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 18:30:14,541 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:30:14,541 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:30:14,541 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 18:30:14,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:30:14,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:30:14,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:30:14,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:30:14,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 18:30:14,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:30:14,544 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 18:30:14,544 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 18:30:14,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:30:14,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 18:30:14,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 18:30:14,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:30:14,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 18:30:14,546 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 18:30:14,546 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 18:30:14,546 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 18:30:14,546 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 18:30:14,546 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 18:30:14,546 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 18:30:14,547 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 18:30:14,547 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 18:30:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 18:30:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 18:30:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 18:30:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 18:30:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 18:30:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 18:30:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 18:30:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 18:30:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:30:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:30:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:30:15,621 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:30:15,621 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:30:15,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:30:15 BoogieIcfgContainer [2020-08-18 18:30:15,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:30:15,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:30:15,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:30:15,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:30:15,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:30:13" (1/3) ... [2020-08-18 18:30:15,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f870bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:30:15, skipping insertion in model container [2020-08-18 18:30:15,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:30:14" (2/3) ... [2020-08-18 18:30:15,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f870bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:30:15, skipping insertion in model container [2020-08-18 18:30:15,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:30:15" (3/3) ... [2020-08-18 18:30:15,635 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product54.cil.c [2020-08-18 18:30:15,646 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:30:15,653 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:30:15,667 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:30:15,693 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:30:15,693 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:30:15,693 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:30:15,694 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:30:15,694 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:30:15,694 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:30:15,694 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:30:15,695 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:30:15,718 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states. [2020-08-18 18:30:15,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 18:30:15,728 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:15,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:30:15,730 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:15,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:15,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1445624956, now seen corresponding path program 1 times [2020-08-18 18:30:15,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:15,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503617188] [2020-08-18 18:30:15,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,515 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:16,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:30:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 18:30:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:16,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503617188] [2020-08-18 18:30:16,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:16,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:30:16,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477106405] [2020-08-18 18:30:16,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:30:16,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:16,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:30:16,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:30:16,661 INFO L87 Difference]: Start difference. First operand 195 states. Second operand 4 states. [2020-08-18 18:30:17,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:17,902 INFO L93 Difference]: Finished difference Result 338 states and 440 transitions. [2020-08-18 18:30:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:30:17,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 18:30:17,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:17,920 INFO L225 Difference]: With dead ends: 338 [2020-08-18 18:30:17,920 INFO L226 Difference]: Without dead ends: 187 [2020-08-18 18:30:17,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:30:17,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-08-18 18:30:18,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 152. [2020-08-18 18:30:18,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-18 18:30:18,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2020-08-18 18:30:18,040 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 51 [2020-08-18 18:30:18,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:18,040 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2020-08-18 18:30:18,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:30:18,041 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2020-08-18 18:30:18,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 18:30:18,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:18,045 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] [2020-08-18 18:30:18,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:30:18,045 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:18,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:18,046 INFO L82 PathProgramCache]: Analyzing trace with hash 313505704, now seen corresponding path program 1 times [2020-08-18 18:30:18,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:18,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374898836] [2020-08-18 18:30:18,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,426 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:18,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:30:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:30:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:18,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374898836] [2020-08-18 18:30:18,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:18,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:30:18,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563762272] [2020-08-18 18:30:18,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:30:18,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:18,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:30:18,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:30:18,491 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand 5 states. [2020-08-18 18:30:18,956 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:20,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:20,024 INFO L93 Difference]: Finished difference Result 279 states and 347 transitions. [2020-08-18 18:30:20,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:30:20,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 18:30:20,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:20,029 INFO L225 Difference]: With dead ends: 279 [2020-08-18 18:30:20,030 INFO L226 Difference]: Without dead ends: 177 [2020-08-18 18:30:20,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:30:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-18 18:30:20,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2020-08-18 18:30:20,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-18 18:30:20,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2020-08-18 18:30:20,077 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 52 [2020-08-18 18:30:20,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:20,078 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2020-08-18 18:30:20,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:30:20,078 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2020-08-18 18:30:20,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 18:30:20,080 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:20,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:30:20,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:30:20,081 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:20,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:20,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1935207340, now seen corresponding path program 1 times [2020-08-18 18:30:20,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:20,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72684286] [2020-08-18 18:30:20,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:20,394 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:20,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:20,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:20,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:20,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:20,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:20,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:20,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 18:30:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:20,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 18:30:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:20,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72684286] [2020-08-18 18:30:20,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:20,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:30:20,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81441960] [2020-08-18 18:30:20,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:30:20,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:20,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:30:20,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:30:20,495 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 9 states. [2020-08-18 18:30:20,894 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:21,185 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:21,430 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:21,686 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:23,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:23,204 INFO L93 Difference]: Finished difference Result 292 states and 366 transitions. [2020-08-18 18:30:23,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 18:30:23,205 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 18:30:23,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:23,208 INFO L225 Difference]: With dead ends: 292 [2020-08-18 18:30:23,209 INFO L226 Difference]: Without dead ends: 177 [2020-08-18 18:30:23,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:30:23,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-18 18:30:23,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2020-08-18 18:30:23,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-18 18:30:23,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 167 transitions. [2020-08-18 18:30:23,253 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 167 transitions. Word has length 57 [2020-08-18 18:30:23,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:23,253 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 167 transitions. [2020-08-18 18:30:23,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:30:23,254 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 167 transitions. [2020-08-18 18:30:23,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 18:30:23,257 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:23,257 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] [2020-08-18 18:30:23,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:30:23,257 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:23,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:23,258 INFO L82 PathProgramCache]: Analyzing trace with hash 979214064, now seen corresponding path program 1 times [2020-08-18 18:30:23,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:23,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315247524] [2020-08-18 18:30:23,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:23,538 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:23,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:23,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:23,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:23,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:23,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:23,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:23,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:30:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:23,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:23,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:23,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:23,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 18:30:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:23,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 18:30:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:23,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315247524] [2020-08-18 18:30:23,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:23,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 18:30:23,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93727281] [2020-08-18 18:30:23,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:30:23,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:23,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:30:23,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:30:23,673 INFO L87 Difference]: Start difference. First operand 143 states and 167 transitions. Second operand 7 states. [2020-08-18 18:30:24,001 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:25,294 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:26,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:26,170 INFO L93 Difference]: Finished difference Result 397 states and 501 transitions. [2020-08-18 18:30:26,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:30:26,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-08-18 18:30:26,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:26,174 INFO L225 Difference]: With dead ends: 397 [2020-08-18 18:30:26,175 INFO L226 Difference]: Without dead ends: 282 [2020-08-18 18:30:26,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 18:30:26,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-18 18:30:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 233. [2020-08-18 18:30:26,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-18 18:30:26,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 266 transitions. [2020-08-18 18:30:26,226 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 266 transitions. Word has length 75 [2020-08-18 18:30:26,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:26,227 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 266 transitions. [2020-08-18 18:30:26,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:30:26,227 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 266 transitions. [2020-08-18 18:30:26,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 18:30:26,230 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:26,230 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] [2020-08-18 18:30:26,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:30:26,231 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:26,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:26,231 INFO L82 PathProgramCache]: Analyzing trace with hash -919866488, now seen corresponding path program 1 times [2020-08-18 18:30:26,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:26,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306971975] [2020-08-18 18:30:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,563 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:26,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:30:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 18:30:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 18:30:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:26,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:26,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306971975] [2020-08-18 18:30:26,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:26,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:30:26,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545010958] [2020-08-18 18:30:26,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:30:26,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:26,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:30:26,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:30:26,723 INFO L87 Difference]: Start difference. First operand 233 states and 266 transitions. Second operand 9 states. [2020-08-18 18:30:27,145 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:28,452 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:28,773 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:29,016 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:29,247 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:30,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:30,684 INFO L93 Difference]: Finished difference Result 695 states and 864 transitions. [2020-08-18 18:30:30,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 18:30:30,685 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-08-18 18:30:30,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:30,689 INFO L225 Difference]: With dead ends: 695 [2020-08-18 18:30:30,689 INFO L226 Difference]: Without dead ends: 490 [2020-08-18 18:30:30,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 18:30:30,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-08-18 18:30:30,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 414. [2020-08-18 18:30:30,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-08-18 18:30:30,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 472 transitions. [2020-08-18 18:30:30,778 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 472 transitions. Word has length 89 [2020-08-18 18:30:30,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:30,779 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 472 transitions. [2020-08-18 18:30:30,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:30:30,779 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 472 transitions. [2020-08-18 18:30:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 18:30:30,781 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:30,781 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] [2020-08-18 18:30:30,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:30:30,782 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:30,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:30,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1008826772, now seen corresponding path program 1 times [2020-08-18 18:30:30,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:30,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416262806] [2020-08-18 18:30:30,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:31,056 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:31,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:31,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:31,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:31,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:31,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:31,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:31,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:30:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:31,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:30:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:31,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:31,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:31,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:31,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:31,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:31,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 18:30:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:31,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 18:30:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:31,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:31,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416262806] [2020-08-18 18:30:31,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:31,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 18:30:31,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12985209] [2020-08-18 18:30:31,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:30:31,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:31,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:30:31,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:30:31,199 INFO L87 Difference]: Start difference. First operand 414 states and 472 transitions. Second operand 10 states. [2020-08-18 18:30:31,581 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:32,775 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:32,996 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:33,224 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:33,486 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:34,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:34,781 INFO L93 Difference]: Finished difference Result 914 states and 1119 transitions. [2020-08-18 18:30:34,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 18:30:34,782 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-18 18:30:34,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:34,787 INFO L225 Difference]: With dead ends: 914 [2020-08-18 18:30:34,788 INFO L226 Difference]: Without dead ends: 528 [2020-08-18 18:30:34,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 18:30:34,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-08-18 18:30:34,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 413. [2020-08-18 18:30:34,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-08-18 18:30:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 469 transitions. [2020-08-18 18:30:34,902 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 469 transitions. Word has length 93 [2020-08-18 18:30:34,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:34,903 INFO L479 AbstractCegarLoop]: Abstraction has 413 states and 469 transitions. [2020-08-18 18:30:34,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:30:34,903 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 469 transitions. [2020-08-18 18:30:34,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 18:30:34,907 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:34,907 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] [2020-08-18 18:30:34,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:30:34,908 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:34,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:34,908 INFO L82 PathProgramCache]: Analyzing trace with hash 390870795, now seen corresponding path program 1 times [2020-08-18 18:30:34,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:34,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142229520] [2020-08-18 18:30:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:35,147 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:35,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:35,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:35,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:35,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:35,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:35,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:35,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:30:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:35,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:30:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:35,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:35,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:35,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:35,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:35,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:35,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 18:30:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:35,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 18:30:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:35,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142229520] [2020-08-18 18:30:35,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:35,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 18:30:35,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577354909] [2020-08-18 18:30:35,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:30:35,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:35,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:30:35,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:30:35,315 INFO L87 Difference]: Start difference. First operand 413 states and 469 transitions. Second operand 10 states. [2020-08-18 18:30:36,378 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:30:36,636 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:30:36,891 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:37,134 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:38,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:38,483 INFO L93 Difference]: Finished difference Result 917 states and 1130 transitions. [2020-08-18 18:30:38,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 18:30:38,483 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-18 18:30:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:38,488 INFO L225 Difference]: With dead ends: 917 [2020-08-18 18:30:38,489 INFO L226 Difference]: Without dead ends: 532 [2020-08-18 18:30:38,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:30:38,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-18 18:30:38,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 423. [2020-08-18 18:30:38,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-08-18 18:30:38,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 479 transitions. [2020-08-18 18:30:38,587 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 479 transitions. Word has length 94 [2020-08-18 18:30:38,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:38,587 INFO L479 AbstractCegarLoop]: Abstraction has 423 states and 479 transitions. [2020-08-18 18:30:38,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:30:38,588 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 479 transitions. [2020-08-18 18:30:38,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 18:30:38,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:38,592 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] [2020-08-18 18:30:38,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:30:38,592 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:38,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:38,592 INFO L82 PathProgramCache]: Analyzing trace with hash 318484237, now seen corresponding path program 1 times [2020-08-18 18:30:38,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:38,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918668004] [2020-08-18 18:30:38,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,878 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:38,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:30:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:30:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:38,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:39,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:39,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:39,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:39,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 18:30:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:39,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 18:30:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:39,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:39,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918668004] [2020-08-18 18:30:39,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:39,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 18:30:39,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591519844] [2020-08-18 18:30:39,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:30:39,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:39,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:30:39,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:30:39,088 INFO L87 Difference]: Start difference. First operand 423 states and 479 transitions. Second operand 12 states. [2020-08-18 18:30:39,665 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:39,923 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:40,182 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:40,913 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:41,173 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:41,424 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:42,945 INFO L93 Difference]: Finished difference Result 941 states and 1174 transitions. [2020-08-18 18:30:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:30:42,946 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-18 18:30:42,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:42,950 INFO L225 Difference]: With dead ends: 941 [2020-08-18 18:30:42,950 INFO L226 Difference]: Without dead ends: 546 [2020-08-18 18:30:42,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 18:30:42,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-08-18 18:30:43,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 431. [2020-08-18 18:30:43,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-08-18 18:30:43,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 487 transitions. [2020-08-18 18:30:43,037 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 487 transitions. Word has length 94 [2020-08-18 18:30:43,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:43,037 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 487 transitions. [2020-08-18 18:30:43,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:30:43,037 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 487 transitions. [2020-08-18 18:30:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 18:30:43,038 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:43,038 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] [2020-08-18 18:30:43,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:30:43,042 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:43,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:43,042 INFO L82 PathProgramCache]: Analyzing trace with hash 648249998, now seen corresponding path program 1 times [2020-08-18 18:30:43,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:43,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931881627] [2020-08-18 18:30:43,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:43,345 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:43,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:43,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:43,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:43,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:43,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:43,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:43,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:30:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:43,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:30:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:43,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:43,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:43,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:43,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:43,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:43,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 18:30:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:43,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 18:30:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:43,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931881627] [2020-08-18 18:30:43,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:43,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:30:43,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673271731] [2020-08-18 18:30:43,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:30:43,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:43,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:30:43,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:30:43,575 INFO L87 Difference]: Start difference. First operand 431 states and 487 transitions. Second operand 8 states. [2020-08-18 18:30:44,120 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:44,696 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:47,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:47,286 INFO L93 Difference]: Finished difference Result 1309 states and 1687 transitions. [2020-08-18 18:30:47,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 18:30:47,287 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-18 18:30:47,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:47,293 INFO L225 Difference]: With dead ends: 1309 [2020-08-18 18:30:47,294 INFO L226 Difference]: Without dead ends: 906 [2020-08-18 18:30:47,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-18 18:30:47,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-08-18 18:30:47,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 761. [2020-08-18 18:30:47,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2020-08-18 18:30:47,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 889 transitions. [2020-08-18 18:30:47,449 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 889 transitions. Word has length 94 [2020-08-18 18:30:47,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:47,449 INFO L479 AbstractCegarLoop]: Abstraction has 761 states and 889 transitions. [2020-08-18 18:30:47,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:30:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 889 transitions. [2020-08-18 18:30:47,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 18:30:47,451 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:47,451 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, 1, 1, 1] [2020-08-18 18:30:47,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:30:47,452 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:47,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:47,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1149612728, now seen corresponding path program 1 times [2020-08-18 18:30:47,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:47,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226289367] [2020-08-18 18:30:47,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,732 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:47,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:30:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:30:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 18:30:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 18:30:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 18:30:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:30:47,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226289367] [2020-08-18 18:30:47,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:30:47,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:30:47,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39683451] [2020-08-18 18:30:47,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:30:47,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:47,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:30:47,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:30:47,871 INFO L87 Difference]: Start difference. First operand 761 states and 889 transitions. Second operand 8 states. [2020-08-18 18:30:48,317 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:51,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:51,152 INFO L93 Difference]: Finished difference Result 1499 states and 1925 transitions. [2020-08-18 18:30:51,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 18:30:51,153 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-18 18:30:51,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:51,162 INFO L225 Difference]: With dead ends: 1499 [2020-08-18 18:30:51,162 INFO L226 Difference]: Without dead ends: 1496 [2020-08-18 18:30:51,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-18 18:30:51,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-08-18 18:30:51,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1269. [2020-08-18 18:30:51,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-08-18 18:30:51,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1498 transitions. [2020-08-18 18:30:51,392 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1498 transitions. Word has length 98 [2020-08-18 18:30:51,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:51,392 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1498 transitions. [2020-08-18 18:30:51,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:30:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1498 transitions. [2020-08-18 18:30:51,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-18 18:30:51,397 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:51,398 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 18:30:51,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:30:51,398 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:51,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:51,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1054262603, now seen corresponding path program 1 times [2020-08-18 18:30:51,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:51,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019842165] [2020-08-18 18:30:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,679 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:51,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:30:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:30:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 18:30:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 18:30:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:30:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 18:30:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-18 18:30:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-18 18:30:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-18 18:30:51,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019842165] [2020-08-18 18:30:51,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:30:51,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 18:30:51,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634394301] [2020-08-18 18:30:51,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 18:30:51,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:51,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 18:30:51,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-18 18:30:51,884 INFO L87 Difference]: Start difference. First operand 1269 states and 1498 transitions. Second operand 13 states. [2020-08-18 18:30:52,583 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:52,830 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:53,043 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:30:54,109 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:56,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:30:56,236 INFO L93 Difference]: Finished difference Result 2281 states and 2814 transitions. [2020-08-18 18:30:56,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 18:30:56,237 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-08-18 18:30:56,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:30:56,244 INFO L225 Difference]: With dead ends: 2281 [2020-08-18 18:30:56,245 INFO L226 Difference]: Without dead ends: 1182 [2020-08-18 18:30:56,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 18:30:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2020-08-18 18:30:56,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1046. [2020-08-18 18:30:56,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-08-18 18:30:56,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1220 transitions. [2020-08-18 18:30:56,483 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1220 transitions. Word has length 162 [2020-08-18 18:30:56,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:30:56,484 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1220 transitions. [2020-08-18 18:30:56,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 18:30:56,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1220 transitions. [2020-08-18 18:30:56,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-18 18:30:56,490 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:30:56,491 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, 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, 1, 1, 1, 1, 1, 1] [2020-08-18 18:30:56,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 18:30:56,491 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:30:56,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:30:56,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1747787381, now seen corresponding path program 1 times [2020-08-18 18:30:56,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:30:56,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326281230] [2020-08-18 18:30:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:30:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,789 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:30:56,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:30:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:30:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:30:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:30:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:30:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:30:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:30:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:30:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 18:30:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:30:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 18:30:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:30:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 18:30:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 18:30:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:56,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:57,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:57,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:30:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:57,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:57,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:30:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:57,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:30:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:57,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:30:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:57,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 18:30:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:57,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-18 18:30:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:30:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-18 18:30:57,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326281230] [2020-08-18 18:30:57,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:30:57,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 18:30:57,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341952745] [2020-08-18 18:30:57,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 18:30:57,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:30:57,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 18:30:57,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 18:30:57,123 INFO L87 Difference]: Start difference. First operand 1046 states and 1220 transitions. Second operand 19 states. [2020-08-18 18:30:57,836 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:30:58,181 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:58,439 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:58,683 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:30:59,421 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:31:00,748 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:31:01,124 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:31:02,567 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:31:02,817 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:31:03,101 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:31:03,353 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:31:03,601 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:31:03,840 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:31:04,132 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:31:04,419 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:31:05,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:31:05,825 INFO L93 Difference]: Finished difference Result 2018 states and 2444 transitions. [2020-08-18 18:31:05,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-18 18:31:05,826 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 175 [2020-08-18 18:31:05,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:31:05,827 INFO L225 Difference]: With dead ends: 2018 [2020-08-18 18:31:05,828 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 18:31:05,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=591, Invalid=2715, Unknown=0, NotChecked=0, Total=3306 [2020-08-18 18:31:05,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 18:31:05,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 18:31:05,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 18:31:05,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 18:31:05,835 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 175 [2020-08-18 18:31:05,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:31:05,835 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 18:31:05,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 18:31:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 18:31:05,835 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 18:31:05,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 18:31:05,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 18:31:06,418 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 199 [2020-08-18 18:31:06,748 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 29 [2020-08-18 18:31:07,334 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 30 [2020-08-18 18:31:07,496 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 30 [2020-08-18 18:31:07,718 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 31 [2020-08-18 18:31:08,035 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 31