/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-examples/standard_sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:46:05,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:46:05,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:46:05,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:46:05,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:46:05,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:46:05,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:46:05,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:46:05,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:46:05,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:46:05,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:46:05,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:46:05,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:46:05,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:46:05,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:46:05,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:46:05,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:46:05,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:46:05,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:46:05,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:46:05,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:46:05,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:46:05,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:46:05,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:46:05,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:46:05,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:46:05,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:46:05,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:46:05,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:46:05,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:46:05,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:46:05,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:46:05,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:46:05,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:46:05,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:46:05,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:46:05,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:46:05,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:46:05,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:46:05,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:46:05,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:46:05,608 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 03:46:05,661 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:46:05,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:46:05,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:46:05,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:46:05,666 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:46:05,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:46:05,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:46:05,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:46:05,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:46:05,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:46:05,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:46:05,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:46:05,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:46:05,669 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:46:05,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:46:05,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:46:05,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:46:05,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:46:05,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:46:05,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:46:05,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:46:05,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:46:05,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:46:05,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:46:05,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:46:05,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:46:05,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:46:05,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:46:05,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:46:05,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:46:06,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:46:06,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:46:06,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:46:06,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:46:06,204 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:46:06,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_sentinel-2.i [2020-10-29 03:46:06,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dcb35100/24e0eba360f64dc1b54ad8038f2fe632/FLAG58e2af723 [2020-10-29 03:46:06,981 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:46:06,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_sentinel-2.i [2020-10-29 03:46:06,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dcb35100/24e0eba360f64dc1b54ad8038f2fe632/FLAG58e2af723 [2020-10-29 03:46:07,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dcb35100/24e0eba360f64dc1b54ad8038f2fe632 [2020-10-29 03:46:07,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:46:07,359 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:46:07,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:46:07,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:46:07,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:46:07,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:46:07" (1/1) ... [2020-10-29 03:46:07,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309f56d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:07, skipping insertion in model container [2020-10-29 03:46:07,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:46:07" (1/1) ... [2020-10-29 03:46:07,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:46:07,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:46:07,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:46:07,589 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:46:07,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:46:07,624 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:46:07,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:07 WrapperNode [2020-10-29 03:46:07,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:46:07,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:46:07,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:46:07,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:46:07,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:07" (1/1) ... [2020-10-29 03:46:07,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:07" (1/1) ... [2020-10-29 03:46:07,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:07" (1/1) ... [2020-10-29 03:46:07,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:07" (1/1) ... [2020-10-29 03:46:07,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:07" (1/1) ... [2020-10-29 03:46:07,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:07" (1/1) ... [2020-10-29 03:46:07,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:07" (1/1) ... [2020-10-29 03:46:07,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:46:07,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:46:07,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:46:07,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:46:07,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:07" (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 03:46:07,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:46:07,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:46:07,755 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:46:07,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:46:07,755 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:46:07,755 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:46:07,755 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:46:07,755 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:46:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:46:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:46:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:46:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:46:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:46:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:46:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:46:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:46:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:46:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:46:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:46:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:46:08,268 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:46:08,268 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 03:46:08,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:46:08 BoogieIcfgContainer [2020-10-29 03:46:08,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:46:08,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:46:08,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:46:08,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:46:08,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:46:07" (1/3) ... [2020-10-29 03:46:08,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d80b94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:46:08, skipping insertion in model container [2020-10-29 03:46:08,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:07" (2/3) ... [2020-10-29 03:46:08,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d80b94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:46:08, skipping insertion in model container [2020-10-29 03:46:08,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:46:08" (3/3) ... [2020-10-29 03:46:08,295 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_sentinel-2.i [2020-10-29 03:46:08,310 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:46:08,316 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:46:08,333 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:46:08,382 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:46:08,383 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:46:08,383 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:46:08,383 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:46:08,383 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:46:08,383 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:46:08,383 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:46:08,384 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:46:08,413 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-29 03:46:08,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 03:46:08,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:08,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:08,424 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:08,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:08,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1039837916, now seen corresponding path program 1 times [2020-10-29 03:46:08,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:08,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910661233] [2020-10-29 03:46:08,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:08,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:08,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:08,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:09,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:09,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 03:46:09,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:46:09,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-29 03:46:09,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:09,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:09,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:46:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:46:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:46:09,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:46:09,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:09,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:09,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:09,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:09,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:09,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:46:09,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:09,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:09,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:09,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:09,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:09,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:46:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:46:09,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910661233] [2020-10-29 03:46:09,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:46:09,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 03:46:09,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902413561] [2020-10-29 03:46:09,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:46:09,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:09,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:46:09,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:46:09,367 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 6 states. [2020-10-29 03:46:09,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:09,598 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2020-10-29 03:46:09,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:46:09,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-29 03:46:09,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:09,609 INFO L225 Difference]: With dead ends: 55 [2020-10-29 03:46:09,609 INFO L226 Difference]: Without dead ends: 20 [2020-10-29 03:46:09,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:46:09,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-29 03:46:09,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-29 03:46:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-29 03:46:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-29 03:46:09,658 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2020-10-29 03:46:09,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:09,659 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-29 03:46:09,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:46:09,659 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-29 03:46:09,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 03:46:09,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:09,661 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:09,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:46:09,661 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:09,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:09,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1663019583, now seen corresponding path program 1 times [2020-10-29 03:46:09,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:09,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611118310] [2020-10-29 03:46:09,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:09,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:09,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:10,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:46:10,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:46:10,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-29 03:46:10,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:10,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:10,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:46:10,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:46:10,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:46:10,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:46:10,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:10,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:10,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:10,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:10,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:46:10,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:10,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:10,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:10,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:10,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:10,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:46:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:46:10,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611118310] [2020-10-29 03:46:10,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:10,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:46:10,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554359546] [2020-10-29 03:46:10,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:46:10,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:10,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:46:10,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:46:10,315 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2020-10-29 03:46:10,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:10,478 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-10-29 03:46:10,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:46:10,479 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-10-29 03:46:10,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:10,480 INFO L225 Difference]: With dead ends: 29 [2020-10-29 03:46:10,480 INFO L226 Difference]: Without dead ends: 22 [2020-10-29 03:46:10,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:46:10,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-29 03:46:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-29 03:46:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-29 03:46:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-10-29 03:46:10,489 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 18 [2020-10-29 03:46:10,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:10,489 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-10-29 03:46:10,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:46:10,490 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-10-29 03:46:10,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 03:46:10,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:10,491 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:10,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:46:10,492 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:10,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:10,493 INFO L82 PathProgramCache]: Analyzing trace with hash 933690116, now seen corresponding path program 2 times [2020-10-29 03:46:10,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:10,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443296535] [2020-10-29 03:46:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:10,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:10,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:46:10,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:46:10,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 03:46:10,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:10,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:10,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:46:10,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 03:46:10,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:46:10,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:46:10,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:10,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:10,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:10,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:10,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:46:10,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:10,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:10,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:10,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:10,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:10,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:46:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:46:10,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443296535] [2020-10-29 03:46:10,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:10,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:46:10,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053091312] [2020-10-29 03:46:10,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:46:10,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:10,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:46:10,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:46:10,965 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 10 states. [2020-10-29 03:46:11,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:11,082 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-10-29 03:46:11,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:46:11,082 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-29 03:46:11,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:11,083 INFO L225 Difference]: With dead ends: 22 [2020-10-29 03:46:11,083 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 03:46:11,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:46:11,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 03:46:11,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 03:46:11,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 03:46:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 03:46:11,085 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-29 03:46:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:11,086 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 03:46:11,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:46:11,086 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 03:46:11,086 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 03:46:11,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:46:11,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 03:46:11,184 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-29 03:46:11,185 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-29 03:46:11,185 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-29 03:46:11,185 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-29 03:46:11,185 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-29 03:46:11,186 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 03:46:11,186 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-29 03:46:11,186 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 03:46:11,186 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 03:46:11,186 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 03:46:11,187 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 03:46:11,187 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 03:46:11,187 INFO L274 CegarLoopResult]: For program point L25(lines 25 32) no Hoare annotation was computed. [2020-10-29 03:46:11,187 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 15 34) no Hoare annotation was computed. [2020-10-29 03:46:11,187 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 15 34) no Hoare annotation was computed. [2020-10-29 03:46:11,187 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 15 34) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-29 03:46:11,188 INFO L274 CegarLoopResult]: For program point L28-1(lines 28 30) no Hoare annotation was computed. [2020-10-29 03:46:11,188 INFO L270 CegarLoopResult]: At program point L28-3(lines 28 30) the Hoare annotation is: (and (<= main_~i~1 main_~pos~0) (= (select (select |#memory_int| |main_~#a~0.base|) (+ (* main_~pos~0 4) |main_~#a~0.offset|)) main_~marker~0)) [2020-10-29 03:46:11,188 INFO L270 CegarLoopResult]: At program point L28-4(lines 28 30) the Hoare annotation is: (<= main_~i~1 main_~pos~0) [2020-10-29 03:46:11,188 INFO L274 CegarLoopResult]: For program point L20-2(lines 20 23) no Hoare annotation was computed. [2020-10-29 03:46:11,188 INFO L277 CegarLoopResult]: At program point L20-3(lines 20 23) the Hoare annotation is: true [2020-10-29 03:46:11,189 INFO L274 CegarLoopResult]: For program point L20-4(lines 15 34) no Hoare annotation was computed. [2020-10-29 03:46:11,189 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 14) the Hoare annotation is: true [2020-10-29 03:46:11,189 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-10-29 03:46:11,189 INFO L270 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-29 03:46:11,189 INFO L274 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-10-29 03:46:11,190 INFO L274 CegarLoopResult]: For program point L14-4(line 14) no Hoare annotation was computed. [2020-10-29 03:46:11,190 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 14) no Hoare annotation was computed. [2020-10-29 03:46:11,205 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-29 03:46:11,210 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-29 03:46:11,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 03:46:11 BoogieIcfgContainer [2020-10-29 03:46:11,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 03:46:11,216 INFO L168 Benchmark]: Toolchain (without parser) took 3861.22 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 130.9 MB in the beginning and 98.4 MB in the end (delta: 32.5 MB). Peak memory consumption was 64.8 MB. Max. memory is 8.0 GB. [2020-10-29 03:46:11,217 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 156.2 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 03:46:11,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.83 ms. Allocated memory is still 156.2 MB. Free memory was 130.3 MB in the beginning and 120.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 03:46:11,219 INFO L168 Benchmark]: Boogie Preprocessor took 40.79 ms. Allocated memory is still 156.2 MB. Free memory was 120.8 MB in the beginning and 119.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 03:46:11,220 INFO L168 Benchmark]: RCFGBuilder took 603.21 ms. Allocated memory is still 156.2 MB. Free memory was 119.2 MB in the beginning and 104.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-29 03:46:11,221 INFO L168 Benchmark]: TraceAbstraction took 2938.22 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 104.5 MB in the beginning and 98.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 38.5 MB. Max. memory is 8.0 GB. [2020-10-29 03:46:11,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 156.2 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 261.83 ms. Allocated memory is still 156.2 MB. Free memory was 130.3 MB in the beginning and 120.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.79 ms. Allocated memory is still 156.2 MB. Free memory was 120.8 MB in the beginning and 119.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 603.21 ms. Allocated memory is still 156.2 MB. Free memory was 119.2 MB in the beginning and 104.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2938.22 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 104.5 MB in the beginning and 98.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 38.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant [2020-10-29 03:46:11,235 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-29 03:46:11,235 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: i <= pos && unknown-#memory_int-unknown[a][pos * 4 + a] == marker - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 29 SDslu, 157 SDs, 0 SdLazy, 161 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 18 PreInvPairs, 22 NumberOfFragments, 58 HoareAnnotationTreeSize, 18 FomulaSimplifications, 53 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 50 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 4450 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...