/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/mapsum5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:22:52,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:22:52,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:22:52,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:22:52,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:22:52,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:22:52,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:22:52,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:22:52,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:22:52,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:22:52,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:22:52,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:22:52,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:22:52,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:22:52,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:22:52,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:22:52,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:22:52,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:22:52,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:22:52,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:22:52,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:22:52,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:22:52,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:22:52,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:22:52,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:22:52,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:22:52,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:22:52,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:22:52,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:22:52,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:22:52,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:22:52,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:22:52,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:22:52,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:22:52,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:22:52,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:22:52,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:22:52,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:22:52,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:22:52,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:22:52,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:22:52,480 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 [2020-10-29 03:22:52,522 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:22:52,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:22:52,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:22:52,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:22:52,526 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:22:52,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:22:52,528 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:22:52,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:22:52,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:22:52,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:22:52,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:22:52,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:22:52,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:22:52,529 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:22:52,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:22:52,530 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:22:52,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:22:52,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:22:52,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:22:52,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:22:52,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:22:52,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:22:52,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:22:52,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:22:52,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:22:52,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:22:52,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:22:52,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:22:52,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:22:52,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:22:52,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:22:53,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:22:53,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:22:53,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:22:53,028 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:22:53,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum5.i [2020-10-29 03:22:53,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/827ccb5c0/26de70e817ab48c794f9b4eccaad9d15/FLAG0dc25e281 [2020-10-29 03:22:53,839 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:22:53,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapsum5.i [2020-10-29 03:22:53,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/827ccb5c0/26de70e817ab48c794f9b4eccaad9d15/FLAG0dc25e281 [2020-10-29 03:22:54,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/827ccb5c0/26de70e817ab48c794f9b4eccaad9d15 [2020-10-29 03:22:54,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:22:54,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:22:54,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:22:54,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:22:54,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:22:54,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:22:54" (1/1) ... [2020-10-29 03:22:54,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57907db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:54, skipping insertion in model container [2020-10-29 03:22:54,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:22:54" (1/1) ... [2020-10-29 03:22:54,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:22:54,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:22:54,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:22:54,416 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:22:54,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:22:54,459 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:22:54,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:54 WrapperNode [2020-10-29 03:22:54,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:22:54,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:22:54,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:22:54,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:22:54,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:54" (1/1) ... [2020-10-29 03:22:54,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:54" (1/1) ... [2020-10-29 03:22:54,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:54" (1/1) ... [2020-10-29 03:22:54,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:54" (1/1) ... [2020-10-29 03:22:54,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:54" (1/1) ... [2020-10-29 03:22:54,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:54" (1/1) ... [2020-10-29 03:22:54,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:54" (1/1) ... [2020-10-29 03:22:54,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:22:54,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:22:54,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:22:54,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:22:54,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:54" (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 [2020-10-29 03:22:54,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:22:54,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:22:54,604 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:22:54,604 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2020-10-29 03:22:54,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:22:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:22:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:22:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:22:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:22:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:22:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:22:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:22:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2020-10-29 03:22:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:22:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:22:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:22:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:22:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:22:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:22:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:22:55,099 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:22:55,099 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:22:55,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:22:55 BoogieIcfgContainer [2020-10-29 03:22:55,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:22:55,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:22:55,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:22:55,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:22:55,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:22:54" (1/3) ... [2020-10-29 03:22:55,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bb319d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:22:55, skipping insertion in model container [2020-10-29 03:22:55,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:22:54" (2/3) ... [2020-10-29 03:22:55,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bb319d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:22:55, skipping insertion in model container [2020-10-29 03:22:55,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:22:55" (3/3) ... [2020-10-29 03:22:55,113 INFO L111 eAbstractionObserver]: Analyzing ICFG mapsum5.i [2020-10-29 03:22:55,128 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:22:55,133 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:22:55,152 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:22:55,186 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:22:55,187 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:22:55,187 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:22:55,187 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:22:55,187 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:22:55,187 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:22:55,187 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:22:55,188 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:22:55,223 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-29 03:22:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 03:22:55,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:55,231 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:55,232 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:55,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:55,239 INFO L82 PathProgramCache]: Analyzing trace with hash -62284816, now seen corresponding path program 1 times [2020-10-29 03:22:55,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:55,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494874636] [2020-10-29 03:22:55,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:55,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:55,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:55,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:55,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:55,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:56,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:57,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:57,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 03:22:57,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:22:57,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2284 [2020-10-29 03:22:57,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:57,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:57,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:22:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:22:57,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 03:22:57,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:22:57,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:57,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:57,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:57,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:57,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:57,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:22:57,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:57,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:57,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:57,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:57,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:57,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:22:57,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 03:22:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:57,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:57,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:57,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:57,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:22:57,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:57,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 03:22:57,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:57,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:22:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:22:57,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:22:57,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 03:22:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:57,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:57,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:57,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:57,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:22:57,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:57,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:22:57,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:57,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:57,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:22:57,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:22:57,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:22:57,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:22:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:57,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:57,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:57,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:57,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:22:57,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:57,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:22:57,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:57,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:57,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:57,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 03:22:57,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:57,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:22:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:22:57,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494874636] [2020-10-29 03:22:57,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:22:57,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:22:57,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130209294] [2020-10-29 03:22:57,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:22:57,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:57,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:22:57,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:22:57,941 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 5 states. [2020-10-29 03:22:58,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:58,340 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-10-29 03:22:58,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:22:58,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-29 03:22:58,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:58,355 INFO L225 Difference]: With dead ends: 69 [2020-10-29 03:22:58,356 INFO L226 Difference]: Without dead ends: 30 [2020-10-29 03:22:58,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:22:58,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-29 03:22:58,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-29 03:22:58,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-29 03:22:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-29 03:22:58,434 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 35 [2020-10-29 03:22:58,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:58,434 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-29 03:22:58,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:22:58,435 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-29 03:22:58,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 03:22:58,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:58,439 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:22:58,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:22:58,440 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:58,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:58,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1622310456, now seen corresponding path program 1 times [2020-10-29 03:22:58,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:58,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214196817] [2020-10-29 03:22:58,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:58,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:58,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:58,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:58,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:59,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:59,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:59,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:01,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 03:23:01,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:23:01,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2658 [2020-10-29 03:23:01,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:01,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:23:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:23:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:23:01,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:01,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:01,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:01,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:01,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:01,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:23:01,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:01,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:01,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:01,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:01,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:01,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:01,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 03:23:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:01,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:01,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:23:01,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:01,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 03:23:01,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:01,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:23:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:23:01,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:01,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 03:23:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:01,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:01,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:23:01,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:01,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 03:23:01,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:01,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:23:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:23:01,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:01,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 03:23:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:01,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:01,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:23:01,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:01,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:23:01,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:01,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:23:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:01,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:23:01,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:01,344 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:23:01,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214196817] [2020-10-29 03:23:01,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:23:01,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 03:23:01,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100326805] [2020-10-29 03:23:01,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:23:01,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:01,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:23:01,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:23:01,353 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-10-29 03:23:01,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:01,748 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-29 03:23:01,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:23:01,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-29 03:23:01,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:01,751 INFO L225 Difference]: With dead ends: 52 [2020-10-29 03:23:01,751 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 03:23:01,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:23:01,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 03:23:01,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-29 03:23:01,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 03:23:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-29 03:23:01,761 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2020-10-29 03:23:01,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:01,762 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-29 03:23:01,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:23:01,762 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-29 03:23:01,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 03:23:01,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:01,764 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:01,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:23:01,764 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:01,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:01,765 INFO L82 PathProgramCache]: Analyzing trace with hash -274705114, now seen corresponding path program 1 times [2020-10-29 03:23:01,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:01,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881841596] [2020-10-29 03:23:01,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:01,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:01,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:02,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:02,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:03,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:06,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:06,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:23:06,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:23:06,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:23:06,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:06,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:23:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:23:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:23:06,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:06,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:06,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:06,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:06,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:06,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:06,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:23:06,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:06,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:06,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:06,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:06,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:06,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:06,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 03:23:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:06,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:06,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:06,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:06,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:23:06,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:06,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 03:23:06,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:06,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:06,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:23:06,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:06,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 03:23:06,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:06,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 03:23:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:06,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:06,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:06,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:23:06,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:06,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 03:23:06,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:06,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:06,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:23:06,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:06,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 03:23:06,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:06,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:23:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:06,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:07,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:07,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:23:07,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 03:23:07,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:07,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:23:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:23:07,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:07,053 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 03:23:07,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881841596] [2020-10-29 03:23:07,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:07,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:23:07,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753657046] [2020-10-29 03:23:07,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:23:07,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:07,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:23:07,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:23:07,056 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-29 03:23:07,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:07,497 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-29 03:23:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:23:07,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-10-29 03:23:07,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:07,499 INFO L225 Difference]: With dead ends: 55 [2020-10-29 03:23:07,500 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 03:23:07,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:23:07,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 03:23:07,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-29 03:23:07,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:23:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-29 03:23:07,509 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 43 [2020-10-29 03:23:07,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:07,509 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-29 03:23:07,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:23:07,510 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-29 03:23:07,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 03:23:07,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:07,511 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:07,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:23:07,512 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:07,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:07,513 INFO L82 PathProgramCache]: Analyzing trace with hash -309794300, now seen corresponding path program 2 times [2020-10-29 03:23:07,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:07,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935069991] [2020-10-29 03:23:07,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:07,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:07,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:08,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:09,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:10,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:12,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:12,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:23:12,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:23:12,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:23:12,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:12,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:23:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:23:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 03:23:12,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1