/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:24:52,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:24:52,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:24:52,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:24:52,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:24:52,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:24:52,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:24:52,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:24:52,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:24:52,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:24:52,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:24:52,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:24:52,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:24:52,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:24:52,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:24:52,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:24:52,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:24:52,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:24:52,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:24:52,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:24:52,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:24:52,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:24:52,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:24:52,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:24:52,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:24:52,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:24:52,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:24:52,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:24:52,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:24:52,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:24:52,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:24:52,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:24:52,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:24:52,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:24:52,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:24:52,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:24:52,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:24:52,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:24:52,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:24:52,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:24:52,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:24:52,287 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 10:24:52,332 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:24:52,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:24:52,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:24:52,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:24:52,336 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:24:52,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:24:52,336 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:24:52,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:24:52,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:24:52,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:24:52,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:24:52,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:24:52,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:24:52,339 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:24:52,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:24:52,339 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:24:52,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:24:52,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:24:52,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:24:52,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:24:52,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:24:52,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:24:52,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:24:52,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:24:52,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:24:52,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:24:52,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:24:52,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:24:52,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:24:52,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 10:24:52,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:24:52,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:24:52,723 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:24:52,725 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:24:52,725 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:24:52,726 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2020-08-18 10:24:52,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd80e369c/a3fdaa1ca7e843a98830f3b50804f806/FLAG5d6bc1e45 [2020-08-18 10:24:53,286 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:24:53,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2020-08-18 10:24:53,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd80e369c/a3fdaa1ca7e843a98830f3b50804f806/FLAG5d6bc1e45 [2020-08-18 10:24:53,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd80e369c/a3fdaa1ca7e843a98830f3b50804f806 [2020-08-18 10:24:53,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:24:53,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:24:53,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:24:53,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:24:53,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:24:53,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:24:53" (1/1) ... [2020-08-18 10:24:53,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11153ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:53, skipping insertion in model container [2020-08-18 10:24:53,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:24:53" (1/1) ... [2020-08-18 10:24:53,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:24:53,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:24:54,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:24:54,187 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:24:54,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:24:54,310 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:24:54,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:54 WrapperNode [2020-08-18 10:24:54,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:24:54,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:24:54,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:24:54,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:24:54,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:54" (1/1) ... [2020-08-18 10:24:54,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:54" (1/1) ... [2020-08-18 10:24:54,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:54" (1/1) ... [2020-08-18 10:24:54,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:54" (1/1) ... [2020-08-18 10:24:54,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:54" (1/1) ... [2020-08-18 10:24:54,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:54" (1/1) ... [2020-08-18 10:24:54,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:54" (1/1) ... [2020-08-18 10:24:54,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:24:54,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:24:54,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:24:54,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:24:54,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:54" (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 10:24:54,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:24:54,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:24:54,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:24:54,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:24:54,496 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:24:54,497 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:24:54,497 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:24:54,497 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:24:54,497 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:24:54,497 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:24:54,497 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:24:54,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 10:24:54,498 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:24:54,498 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:24:54,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:24:54,498 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:24:54,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:24:54,499 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:24:54,499 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:24:54,499 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:24:54,499 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:24:54,499 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:24:54,499 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:24:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:24:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:24:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:24:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:24:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 10:24:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:24:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:24:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:24:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:24:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:24:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 10:24:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:24:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:24:54,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:24:54,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:24:54,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:24:54,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:24:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:24:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:24:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:24:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:24:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:24:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:24:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:24:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:24:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:24:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:24:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:24:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 10:24:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:24:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:24:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:24:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:24:54,505 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:24:54,505 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:24:54,505 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:24:54,505 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:24:54,505 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:24:54,505 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:24:54,506 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:24:54,506 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:24:54,506 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:24:54,506 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:24:54,506 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:24:54,506 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 10:24:54,506 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:24:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:24:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:24:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:24:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 10:24:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:24:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:24:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:24:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:24:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:24:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:24:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:24:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:24:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:24:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:24:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:24:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:24:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:24:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:24:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:24:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:24:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:24:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:24:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:24:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:24:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:24:55,586 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:24:55,587 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:24:55,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:24:55 BoogieIcfgContainer [2020-08-18 10:24:55,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:24:55,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:24:55,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:24:55,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:24:55,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:24:53" (1/3) ... [2020-08-18 10:24:55,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55117e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:24:55, skipping insertion in model container [2020-08-18 10:24:55,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:54" (2/3) ... [2020-08-18 10:24:55,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55117e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:24:55, skipping insertion in model container [2020-08-18 10:24:55,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:24:55" (3/3) ... [2020-08-18 10:24:55,601 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product49.cil.c [2020-08-18 10:24:55,610 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:24:55,618 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:24:55,630 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:24:55,653 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:24:55,653 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:24:55,653 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:24:55,654 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:24:55,654 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:24:55,654 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:24:55,654 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:24:55,654 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:24:55,677 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-18 10:24:55,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 10:24:55,688 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:55,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:55,689 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:55,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:55,696 INFO L82 PathProgramCache]: Analyzing trace with hash 916136138, now seen corresponding path program 1 times [2020-08-18 10:24:55,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:55,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301704172] [2020-08-18 10:24:55,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,474 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:56,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:24:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:24:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:56,613 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 10:24:56,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301704172] [2020-08-18 10:24:56,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:56,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:24:56,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026965058] [2020-08-18 10:24:56,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:24:56,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:56,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:24:56,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:24:56,644 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 3 states. [2020-08-18 10:24:57,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:57,758 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2020-08-18 10:24:57,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:24:57,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 10:24:57,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:57,775 INFO L225 Difference]: With dead ends: 297 [2020-08-18 10:24:57,775 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 10:24:57,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:24:57,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 10:24:57,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-18 10:24:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-18 10:24:57,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-08-18 10:24:57,873 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 46 [2020-08-18 10:24:57,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:57,874 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-08-18 10:24:57,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:24:57,874 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-08-18 10:24:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 10:24:57,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:57,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:57,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:24:57,878 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:57,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:57,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1104947330, now seen corresponding path program 1 times [2020-08-18 10:24:57,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:57,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426740679] [2020-08-18 10:24:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,260 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:58,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:24:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:24:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:58,322 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 10:24:58,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426740679] [2020-08-18 10:24:58,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:58,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:24:58,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72038873] [2020-08-18 10:24:58,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:24:58,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:58,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:24:58,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:24:58,328 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 4 states. [2020-08-18 10:24:58,784 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:59,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:59,549 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2020-08-18 10:24:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:24:59,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 10:24:59,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:59,555 INFO L225 Difference]: With dead ends: 230 [2020-08-18 10:24:59,555 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 10:24:59,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:24:59,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 10:24:59,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-18 10:24:59,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 10:24:59,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-08-18 10:24:59,605 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 47 [2020-08-18 10:24:59,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:59,606 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-08-18 10:24:59,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:24:59,606 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-08-18 10:24:59,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 10:24:59,608 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:59,608 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 10:24:59,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:24:59,609 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:59,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:59,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1852359913, now seen corresponding path program 1 times [2020-08-18 10:24:59,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:59,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831449169] [2020-08-18 10:24:59,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:59,924 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:59,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:59,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:59,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:59,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:59,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:59,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:24:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:59,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:24:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:00,000 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 10:25:00,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831449169] [2020-08-18 10:25:00,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:25:00,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:25:00,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046052979] [2020-08-18 10:25:00,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:25:00,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:00,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:25:00,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:25:00,003 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 8 states. [2020-08-18 10:25:00,423 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:00,740 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:00,973 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:01,217 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:02,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:02,350 INFO L93 Difference]: Finished difference Result 239 states and 293 transitions. [2020-08-18 10:25:02,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 10:25:02,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 10:25:02,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:02,354 INFO L225 Difference]: With dead ends: 239 [2020-08-18 10:25:02,355 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 10:25:02,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:25:02,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 10:25:02,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-18 10:25:02,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 10:25:02,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-08-18 10:25:02,388 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 51 [2020-08-18 10:25:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:02,388 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-08-18 10:25:02,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:25:02,388 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-08-18 10:25:02,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 10:25:02,390 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:02,390 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] [2020-08-18 10:25:02,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:25:02,391 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:02,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:02,391 INFO L82 PathProgramCache]: Analyzing trace with hash 458129541, now seen corresponding path program 1 times [2020-08-18 10:25:02,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:02,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708531454] [2020-08-18 10:25:02,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:02,682 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:02,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:02,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:02,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:02,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:02,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:02,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:25:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:02,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:02,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:02,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:25:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:02,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 10:25:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:02,761 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 10:25:02,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708531454] [2020-08-18 10:25:02,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:25:02,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:25:02,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864548466] [2020-08-18 10:25:02,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:25:02,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:02,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:25:02,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:25:02,763 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 6 states. [2020-08-18 10:25:03,146 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:04,246 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:04,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:04,897 INFO L93 Difference]: Finished difference Result 331 states and 409 transitions. [2020-08-18 10:25:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:25:04,898 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-18 10:25:04,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:04,901 INFO L225 Difference]: With dead ends: 331 [2020-08-18 10:25:04,901 INFO L226 Difference]: Without dead ends: 236 [2020-08-18 10:25:04,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:25:04,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-08-18 10:25:04,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2020-08-18 10:25:04,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-18 10:25:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2020-08-18 10:25:04,949 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 64 [2020-08-18 10:25:04,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:04,950 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2020-08-18 10:25:04,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:25:04,950 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2020-08-18 10:25:04,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 10:25:04,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:04,952 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] [2020-08-18 10:25:04,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:25:04,952 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:04,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:04,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1170867649, now seen corresponding path program 1 times [2020-08-18 10:25:04,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:04,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642101658] [2020-08-18 10:25:04,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,249 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:05,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:25:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 10:25:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:25:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,351 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 10:25:05,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642101658] [2020-08-18 10:25:05,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:25:05,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:25:05,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066636858] [2020-08-18 10:25:05,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:25:05,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:05,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:25:05,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:25:05,354 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand 12 states. [2020-08-18 10:25:05,858 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:06,183 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:06,460 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:06,719 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:07,312 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:08,183 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:08,469 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:08,741 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:08,993 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:09,281 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:09,561 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:10,896 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:11,258 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:11,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:11,905 INFO L93 Difference]: Finished difference Result 677 states and 879 transitions. [2020-08-18 10:25:11,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 10:25:11,906 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-08-18 10:25:11,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:11,912 INFO L225 Difference]: With dead ends: 677 [2020-08-18 10:25:11,912 INFO L226 Difference]: Without dead ends: 506 [2020-08-18 10:25:11,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 10:25:11,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-18 10:25:12,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 448. [2020-08-18 10:25:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-08-18 10:25:12,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 529 transitions. [2020-08-18 10:25:12,031 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 529 transitions. Word has length 78 [2020-08-18 10:25:12,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:12,031 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 529 transitions. [2020-08-18 10:25:12,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:25:12,032 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 529 transitions. [2020-08-18 10:25:12,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-18 10:25:12,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:12,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:25:12,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:25:12,037 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:12,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:12,037 INFO L82 PathProgramCache]: Analyzing trace with hash 524664374, now seen corresponding path program 1 times [2020-08-18 10:25:12,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:12,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334418314] [2020-08-18 10:25:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,302 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:12,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:25:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 10:25:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 10:25:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 10:25:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 10:25:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 10:25:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-18 10:25:12,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334418314] [2020-08-18 10:25:12,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:12,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 10:25:12,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070678295] [2020-08-18 10:25:12,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 10:25:12,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:12,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 10:25:12,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:25:12,582 INFO L87 Difference]: Start difference. First operand 448 states and 529 transitions. Second operand 13 states. [2020-08-18 10:25:13,147 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:13,769 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:14,257 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:14,514 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:25:14,807 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:15,066 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:15,298 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:15,552 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:25:15,841 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:16,099 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:17,662 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:17,889 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:18,145 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:18,378 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:18,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:18,877 INFO L93 Difference]: Finished difference Result 904 states and 1154 transitions. [2020-08-18 10:25:18,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 10:25:18,878 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 136 [2020-08-18 10:25:18,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:18,883 INFO L225 Difference]: With dead ends: 904 [2020-08-18 10:25:18,883 INFO L226 Difference]: Without dead ends: 480 [2020-08-18 10:25:18,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 10:25:18,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-08-18 10:25:18,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 418. [2020-08-18 10:25:18,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-08-18 10:25:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 497 transitions. [2020-08-18 10:25:18,982 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 497 transitions. Word has length 136 [2020-08-18 10:25:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:18,982 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 497 transitions. [2020-08-18 10:25:18,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 10:25:18,983 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 497 transitions. [2020-08-18 10:25:18,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 10:25:18,985 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:18,986 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:18,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:25:18,986 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:18,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:18,987 INFO L82 PathProgramCache]: Analyzing trace with hash -532032326, now seen corresponding path program 1 times [2020-08-18 10:25:18,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:18,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106104386] [2020-08-18 10:25:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,236 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:19,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:25:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 10:25:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 10:25:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 10:25:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 10:25:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 10:25:19,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106104386] [2020-08-18 10:25:19,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:19,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:25:19,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513123] [2020-08-18 10:25:19,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:25:19,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:19,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:25:19,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:25:19,430 INFO L87 Difference]: Start difference. First operand 418 states and 497 transitions. Second operand 12 states. [2020-08-18 10:25:20,107 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:20,340 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:20,552 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:21,080 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:21,312 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:21,529 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:22,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:22,400 INFO L93 Difference]: Finished difference Result 761 states and 937 transitions. [2020-08-18 10:25:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:25:22,401 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-18 10:25:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:22,406 INFO L225 Difference]: With dead ends: 761 [2020-08-18 10:25:22,406 INFO L226 Difference]: Without dead ends: 367 [2020-08-18 10:25:22,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:25:22,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-08-18 10:25:22,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 343. [2020-08-18 10:25:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-18 10:25:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 405 transitions. [2020-08-18 10:25:22,471 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 405 transitions. Word has length 128 [2020-08-18 10:25:22,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:22,472 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 405 transitions. [2020-08-18 10:25:22,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:25:22,472 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 405 transitions. [2020-08-18 10:25:22,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 10:25:22,474 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:22,474 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:22,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:25:22,475 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:22,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:22,475 INFO L82 PathProgramCache]: Analyzing trace with hash 759278389, now seen corresponding path program 1 times [2020-08-18 10:25:22,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:22,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191333196] [2020-08-18 10:25:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,728 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:22,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:25:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 10:25:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 10:25:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 10:25:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 10:25:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 10:25:22,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191333196] [2020-08-18 10:25:22,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:22,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 10:25:22,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215629773] [2020-08-18 10:25:22,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:25:22,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:22,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:25:22,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:25:22,883 INFO L87 Difference]: Start difference. First operand 343 states and 405 transitions. Second operand 10 states. [2020-08-18 10:25:24,155 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:24,390 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:25:24,621 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:24,854 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:25,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:25,183 INFO L93 Difference]: Finished difference Result 632 states and 772 transitions. [2020-08-18 10:25:25,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:25:25,184 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-18 10:25:25,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:25,188 INFO L225 Difference]: With dead ends: 632 [2020-08-18 10:25:25,188 INFO L226 Difference]: Without dead ends: 372 [2020-08-18 10:25:25,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:25:25,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-08-18 10:25:25,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 348. [2020-08-18 10:25:25,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-08-18 10:25:25,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 410 transitions. [2020-08-18 10:25:25,265 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 410 transitions. Word has length 132 [2020-08-18 10:25:25,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:25,265 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 410 transitions. [2020-08-18 10:25:25,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:25:25,265 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 410 transitions. [2020-08-18 10:25:25,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 10:25:25,267 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:25,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:25,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:25:25,268 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:25,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:25,268 INFO L82 PathProgramCache]: Analyzing trace with hash 249805299, now seen corresponding path program 1 times [2020-08-18 10:25:25,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:25,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470310970] [2020-08-18 10:25:25,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,524 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:25,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:25:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 10:25:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 10:25:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 10:25:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 10:25:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,677 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 10:25:25,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470310970] [2020-08-18 10:25:25,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:25,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 10:25:25,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580656775] [2020-08-18 10:25:25,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:25:25,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:25,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:25:25,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:25:25,680 INFO L87 Difference]: Start difference. First operand 348 states and 410 transitions. Second operand 10 states. [2020-08-18 10:25:26,229 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:27,538 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:27,781 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:28,011 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:28,235 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:28,490 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:28,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:28,749 INFO L93 Difference]: Finished difference Result 379 states and 458 transitions. [2020-08-18 10:25:28,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 10:25:28,750 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-18 10:25:28,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:28,754 INFO L225 Difference]: With dead ends: 379 [2020-08-18 10:25:28,754 INFO L226 Difference]: Without dead ends: 376 [2020-08-18 10:25:28,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 10:25:28,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-08-18 10:25:28,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 348. [2020-08-18 10:25:28,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-08-18 10:25:28,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 409 transitions. [2020-08-18 10:25:28,811 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 409 transitions. Word has length 132 [2020-08-18 10:25:28,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:28,811 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 409 transitions. [2020-08-18 10:25:28,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:25:28,812 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 409 transitions. [2020-08-18 10:25:28,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-18 10:25:28,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:28,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:25:28,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:25:28,814 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:28,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:28,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1295460868, now seen corresponding path program 1 times [2020-08-18 10:25:28,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:28,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103256583] [2020-08-18 10:25:28,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,126 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:29,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:25:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 10:25:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 10:25:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 10:25:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 10:25:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:29,315 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 10:25:29,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103256583] [2020-08-18 10:25:29,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:29,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:25:29,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518786629] [2020-08-18 10:25:29,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:25:29,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:29,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:25:29,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:25:29,318 INFO L87 Difference]: Start difference. First operand 348 states and 409 transitions. Second operand 12 states. [2020-08-18 10:25:30,079 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:30,722 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:31,479 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:31,760 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:32,002 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:32,234 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:32,489 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:32,720 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:33,735 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:34,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:34,423 INFO L93 Difference]: Finished difference Result 832 states and 1064 transitions. [2020-08-18 10:25:34,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 10:25:34,423 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-18 10:25:34,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:34,427 INFO L225 Difference]: With dead ends: 832 [2020-08-18 10:25:34,429 INFO L226 Difference]: Without dead ends: 567 [2020-08-18 10:25:34,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-18 10:25:34,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-08-18 10:25:34,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 483. [2020-08-18 10:25:34,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-08-18 10:25:34,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 575 transitions. [2020-08-18 10:25:34,523 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 575 transitions. Word has length 136 [2020-08-18 10:25:34,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:34,524 INFO L479 AbstractCegarLoop]: Abstraction has 483 states and 575 transitions. [2020-08-18 10:25:34,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:25:34,524 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 575 transitions. [2020-08-18 10:25:34,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-18 10:25:34,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:34,527 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-08-18 10:25:34,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:25:34,527 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:34,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:34,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1491934830, now seen corresponding path program 2 times [2020-08-18 10:25:34,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:34,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827093629] [2020-08-18 10:25:34,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:34,896 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:34,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:34,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:34,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:34,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:34,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:34,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:34,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:25:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:34,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:34,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 10:25:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:25:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 10:25:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-18 10:25:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-18 10:25:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-18 10:25:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-18 10:25:35,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827093629] [2020-08-18 10:25:35,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:35,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 10:25:35,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467933760] [2020-08-18 10:25:35,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 10:25:35,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:35,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 10:25:35,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:25:35,347 INFO L87 Difference]: Start difference. First operand 483 states and 575 transitions. Second operand 13 states. [2020-08-18 10:25:36,767 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:37,031 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:38,580 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:25:38,817 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:39,044 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:39,466 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-18 10:25:40,913 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-18 10:25:41,188 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 10:25:41,482 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:25:41,737 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:25:42,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:42,586 INFO L93 Difference]: Finished difference Result 1322 states and 1661 transitions. [2020-08-18 10:25:42,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 10:25:42,592 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 189 [2020-08-18 10:25:42,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:42,598 INFO L225 Difference]: With dead ends: 1322 [2020-08-18 10:25:42,598 INFO L226 Difference]: Without dead ends: 920 [2020-08-18 10:25:42,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 10:25:42,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-08-18 10:25:42,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 789. [2020-08-18 10:25:42,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-08-18 10:25:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 924 transitions. [2020-08-18 10:25:42,740 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 924 transitions. Word has length 189 [2020-08-18 10:25:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:42,741 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 924 transitions. [2020-08-18 10:25:42,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 10:25:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 924 transitions. [2020-08-18 10:25:42,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-18 10:25:42,744 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:42,744 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-08-18 10:25:42,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 10:25:42,745 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:42,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:42,745 INFO L82 PathProgramCache]: Analyzing trace with hash 384547988, now seen corresponding path program 1 times [2020-08-18 10:25:42,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:42,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429727858] [2020-08-18 10:25:42,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:42,986 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:42,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:25:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 10:25:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:25:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 10:25:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-18 10:25:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-18 10:25:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-18 10:25:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-08-18 10:25:43,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429727858] [2020-08-18 10:25:43,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:43,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 10:25:43,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425038106] [2020-08-18 10:25:43,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 10:25:43,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:43,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 10:25:43,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:25:43,195 INFO L87 Difference]: Start difference. First operand 789 states and 924 transitions. Second operand 13 states. [2020-08-18 10:25:44,273 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:44,528 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:44,766 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:45,960 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:46,195 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:46,451 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:46,679 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:46,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:46,962 INFO L93 Difference]: Finished difference Result 1041 states and 1226 transitions. [2020-08-18 10:25:46,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 10:25:46,962 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 189 [2020-08-18 10:25:46,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:46,963 INFO L225 Difference]: With dead ends: 1041 [2020-08-18 10:25:46,963 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 10:25:46,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 10:25:46,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 10:25:46,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 10:25:46,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 10:25:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 10:25:46,967 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 189 [2020-08-18 10:25:46,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:46,967 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 10:25:46,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 10:25:46,967 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 10:25:46,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 10:25:46,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 10:25:46,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 10:25:48,395 WARN L193 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 246 [2020-08-18 10:25:49,309 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 248