/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/verifythis/elimination_max_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 19:22:01,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 19:22:01,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 19:22:01,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 19:22:01,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 19:22:01,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 19:22:01,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 19:22:01,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 19:22:01,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 19:22:01,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 19:22:01,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 19:22:01,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 19:22:01,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 19:22:01,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 19:22:01,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 19:22:01,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 19:22:01,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 19:22:01,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 19:22:01,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 19:22:01,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 19:22:01,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 19:22:01,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 19:22:01,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 19:22:01,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 19:22:01,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 19:22:01,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 19:22:01,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 19:22:01,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 19:22:01,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 19:22:01,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 19:22:01,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 19:22:01,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 19:22:01,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 19:22:01,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 19:22:01,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 19:22:01,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 19:22:01,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 19:22:01,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 19:22:01,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 19:22:01,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 19:22:01,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 19:22:01,595 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 19:22:01,643 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 19:22:01,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 19:22:01,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 19:22:01,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 19:22:01,648 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 19:22:01,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 19:22:01,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 19:22:01,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 19:22:01,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 19:22:01,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 19:22:01,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 19:22:01,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 19:22:01,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 19:22:01,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 19:22:01,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 19:22:01,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 19:22:01,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 19:22:01,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:22:01,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 19:22:01,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 19:22:01,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 19:22:01,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 19:22:01,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 19:22:01,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 19:22:01,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 19:22:01,656 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 19:22:02,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 19:22:02,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 19:22:02,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 19:22:02,097 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 19:22:02,101 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 19:22:02,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/elimination_max_rec.c [2021-01-06 19:22:02,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cddbf4db9/f2dbb8b1d0bf48e5968bd97769c8e629/FLAGa8a3bcf6c [2021-01-06 19:22:02,830 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 19:22:02,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max_rec.c [2021-01-06 19:22:02,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cddbf4db9/f2dbb8b1d0bf48e5968bd97769c8e629/FLAGa8a3bcf6c [2021-01-06 19:22:03,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cddbf4db9/f2dbb8b1d0bf48e5968bd97769c8e629 [2021-01-06 19:22:03,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 19:22:03,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 19:22:03,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 19:22:03,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 19:22:03,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 19:22:03,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:22:03" (1/1) ... [2021-01-06 19:22:03,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b33875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:03, skipping insertion in model container [2021-01-06 19:22:03,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:22:03" (1/1) ... [2021-01-06 19:22:03,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 19:22:03,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 19:22:03,443 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2021-01-06 19:22:03,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:22:03,479 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 19:22:03,494 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2021-01-06 19:22:03,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:22:03,521 INFO L208 MainTranslator]: Completed translation [2021-01-06 19:22:03,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:03 WrapperNode [2021-01-06 19:22:03,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 19:22:03,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 19:22:03,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 19:22:03,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 19:22:03,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:03" (1/1) ... [2021-01-06 19:22:03,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:03" (1/1) ... [2021-01-06 19:22:03,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 19:22:03,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 19:22:03,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 19:22:03,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 19:22:03,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:03" (1/1) ... [2021-01-06 19:22:03,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:03" (1/1) ... [2021-01-06 19:22:03,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:03" (1/1) ... [2021-01-06 19:22:03,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:03" (1/1) ... [2021-01-06 19:22:03,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:03" (1/1) ... [2021-01-06 19:22:03,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:03" (1/1) ... [2021-01-06 19:22:03,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:03" (1/1) ... [2021-01-06 19:22:03,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 19:22:03,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 19:22:03,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 19:22:03,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 19:22:03,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 19:22:03,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 19:22:03,798 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-01-06 19:22:03,798 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-01-06 19:22:03,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 19:22:03,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-06 19:22:03,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 19:22:03,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 19:22:03,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 19:22:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 19:22:04,254 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 19:22:04,254 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-01-06 19:22:04,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:22:04 BoogieIcfgContainer [2021-01-06 19:22:04,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 19:22:04,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 19:22:04,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 19:22:04,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 19:22:04,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 07:22:03" (1/3) ... [2021-01-06 19:22:04,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1e0ed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:22:04, skipping insertion in model container [2021-01-06 19:22:04,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:22:03" (2/3) ... [2021-01-06 19:22:04,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1e0ed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:22:04, skipping insertion in model container [2021-01-06 19:22:04,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:22:04" (3/3) ... [2021-01-06 19:22:04,273 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2021-01-06 19:22:04,285 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 19:22:04,290 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 19:22:04,310 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 19:22:04,360 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 19:22:04,360 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 19:22:04,361 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 19:22:04,361 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 19:22:04,361 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 19:22:04,361 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 19:22:04,362 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 19:22:04,362 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 19:22:04,385 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2021-01-06 19:22:04,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 19:22:04,392 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:04,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:22:04,394 INFO L429 AbstractCegarLoop]: === Iteration 1 === [checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:04,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:04,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1228012135, now seen corresponding path program 1 times [2021-01-06 19:22:04,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:04,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889566130] [2021-01-06 19:22:04,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:04,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889566130] [2021-01-06 19:22:04,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:04,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 19:22:04,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447063376] [2021-01-06 19:22:04,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 19:22:04,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:04,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 19:22:04,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 19:22:04,707 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2021-01-06 19:22:04,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:04,734 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2021-01-06 19:22:04,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 19:22:04,736 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 19:22:04,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:04,746 INFO L225 Difference]: With dead ends: 51 [2021-01-06 19:22:04,746 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 19:22:04,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 19:22:04,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 19:22:04,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-01-06 19:22:04,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 19:22:04,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-01-06 19:22:04,795 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 10 [2021-01-06 19:22:04,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:04,796 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-01-06 19:22:04,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 19:22:04,796 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-01-06 19:22:04,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 19:22:04,797 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:04,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:22:04,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 19:22:04,798 INFO L429 AbstractCegarLoop]: === Iteration 2 === [checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:04,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:04,799 INFO L82 PathProgramCache]: Analyzing trace with hash -2037358761, now seen corresponding path program 1 times [2021-01-06 19:22:04,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:04,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861710877] [2021-01-06 19:22:04,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:04,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861710877] [2021-01-06 19:22:04,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:22:04,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:22:04,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524621928] [2021-01-06 19:22:04,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:22:04,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:04,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:22:04,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:22:04,979 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2021-01-06 19:22:05,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:05,115 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2021-01-06 19:22:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 19:22:05,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 19:22:05,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:05,119 INFO L225 Difference]: With dead ends: 54 [2021-01-06 19:22:05,119 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 19:22:05,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:22:05,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 19:22:05,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 37. [2021-01-06 19:22:05,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 19:22:05,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2021-01-06 19:22:05,135 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 10 [2021-01-06 19:22:05,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:05,135 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2021-01-06 19:22:05,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:22:05,136 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2021-01-06 19:22:05,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 19:22:05,137 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:05,137 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:22:05,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 19:22:05,138 INFO L429 AbstractCegarLoop]: === Iteration 3 === [checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:05,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:05,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1470600778, now seen corresponding path program 1 times [2021-01-06 19:22:05,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:05,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523082051] [2021-01-06 19:22:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:05,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523082051] [2021-01-06 19:22:05,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012252327] [2021-01-06 19:22:05,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:22:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:05,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 19:22:05,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:22:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:05,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:22:05,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-01-06 19:22:05,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721140071] [2021-01-06 19:22:05,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 19:22:05,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:05,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 19:22:05,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-01-06 19:22:05,787 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 10 states. [2021-01-06 19:22:06,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:06,174 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2021-01-06 19:22:06,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 19:22:06,175 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2021-01-06 19:22:06,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:06,176 INFO L225 Difference]: With dead ends: 52 [2021-01-06 19:22:06,177 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 19:22:06,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-01-06 19:22:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 19:22:06,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 21. [2021-01-06 19:22:06,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-01-06 19:22:06,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-01-06 19:22:06,186 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2021-01-06 19:22:06,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:06,186 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-01-06 19:22:06,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 19:22:06,187 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-01-06 19:22:06,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 19:22:06,187 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:22:06,188 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:22:06,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 19:22:06,402 INFO L429 AbstractCegarLoop]: === Iteration 4 === [checkErr1ASSERT_VIOLATIONERROR_FUNCTION, checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:22:06,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:22:06,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1849931057, now seen corresponding path program 1 times [2021-01-06 19:22:06,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:22:06,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970447081] [2021-01-06 19:22:06,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:22:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:06,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-01-06 19:22:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:06,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970447081] [2021-01-06 19:22:06,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953283147] [2021-01-06 19:22:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:22:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:22:06,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 19:22:06,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:22:06,671 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-01-06 19:22:06,675 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 19:22:06,678 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 19:22:06,679 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 19:22:06,680 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2021-01-06 19:22:08,885 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 19:22:08,892 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 19:22:08,897 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 19:22:08,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:22:08,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:22:08,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 13 [2021-01-06 19:22:08,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276948045] [2021-01-06 19:22:08,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 19:22:08,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:22:08,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 19:22:08,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=116, Unknown=1, NotChecked=0, Total=156 [2021-01-06 19:22:08,922 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 13 states. [2021-01-06 19:22:11,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:22:11,130 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-01-06 19:22:11,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 19:22:11,135 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2021-01-06 19:22:11,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:22:11,135 INFO L225 Difference]: With dead ends: 23 [2021-01-06 19:22:11,136 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 19:22:11,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=64, Invalid=175, Unknown=1, NotChecked=0, Total=240 [2021-01-06 19:22:11,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 19:22:11,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 19:22:11,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 19:22:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 19:22:11,138 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-01-06 19:22:11,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:22:11,138 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 19:22:11,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 19:22:11,138 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 19:22:11,139 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 19:22:11,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:22:11,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 19:22:11,511 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 19:22:11,511 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 19:22:11,512 INFO L189 CegarLoopUtils]: For program point L-1-1(line -1) no Hoare annotation was computed. [2021-01-06 19:22:11,512 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 19:22:11,512 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 19:22:11,512 INFO L192 CegarLoopUtils]: At program point L49(lines 41 50) the Hoare annotation is: true [2021-01-06 19:22:11,512 INFO L185 CegarLoopUtils]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc17.base|)) (= (select |#memory_int| ULTIMATE.start_main_~a~0.base) .cse0))) [2021-01-06 19:22:11,512 INFO L189 CegarLoopUtils]: For program point L46-1(line 46) no Hoare annotation was computed. [2021-01-06 19:22:11,513 INFO L189 CegarLoopUtils]: For program point L8(line 8) no Hoare annotation was computed. [2021-01-06 19:22:11,513 INFO L189 CegarLoopUtils]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-01-06 19:22:11,513 INFO L192 CegarLoopUtils]: At program point checkENTRY(lines 16 39) the Hoare annotation is: true [2021-01-06 19:22:11,513 INFO L189 CegarLoopUtils]: For program point L25(lines 25 26) no Hoare annotation was computed. [2021-01-06 19:22:11,513 INFO L189 CegarLoopUtils]: For program point checkErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-01-06 19:22:11,513 INFO L185 CegarLoopUtils]: At program point L25-2(lines 25 26) the Hoare annotation is: (let ((.cse1 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (and (let ((.cse0 (= check___VERIFIER_assert_~cond 1))) (or (and .cse0 (= |check_#in~x| 0)) (and .cse0 (<= 1 check_~x)))) (<= 0 check_~x) (<= (+ check_~y 1) check_~n) (= (select |#memory_int| check_~a.base) .cse1)) (not (<= 0 |check_#in~x|)) (not (= (select |#memory_int| |check_#in~a.base|) .cse1)))) [2021-01-06 19:22:11,514 INFO L189 CegarLoopUtils]: For program point L17(line 17) no Hoare annotation was computed. [2021-01-06 19:22:11,514 INFO L189 CegarLoopUtils]: For program point L11(line 11) no Hoare annotation was computed. [2021-01-06 19:22:11,514 INFO L189 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-01-06 19:22:11,514 INFO L189 CegarLoopUtils]: For program point L11-3(line 11) no Hoare annotation was computed. [2021-01-06 19:22:11,514 INFO L189 CegarLoopUtils]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-01-06 19:22:11,514 INFO L189 CegarLoopUtils]: For program point L11-4(line 11) no Hoare annotation was computed. [2021-01-06 19:22:11,514 INFO L189 CegarLoopUtils]: For program point checkFINAL(lines 16 39) no Hoare annotation was computed. [2021-01-06 19:22:11,515 INFO L189 CegarLoopUtils]: For program point L28(line 28) no Hoare annotation was computed. [2021-01-06 19:22:11,515 INFO L189 CegarLoopUtils]: For program point checkErr1ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-01-06 19:22:11,515 INFO L189 CegarLoopUtils]: For program point checkEXIT(lines 16 39) no Hoare annotation was computed. [2021-01-06 19:22:11,515 INFO L189 CegarLoopUtils]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-01-06 19:22:11,515 INFO L189 CegarLoopUtils]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2021-01-06 19:22:11,515 INFO L189 CegarLoopUtils]: For program point L8(line 8) no Hoare annotation was computed. [2021-01-06 19:22:11,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 07:22:11 BoogieIcfgContainer [2021-01-06 19:22:11,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 19:22:11,527 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 19:22:11,527 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 19:22:11,527 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 19:22:11,528 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:22:04" (3/4) ... [2021-01-06 19:22:11,531 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 19:22:11,538 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2021-01-06 19:22:11,544 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-01-06 19:22:11,544 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-01-06 19:22:11,545 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-01-06 19:22:11,545 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 19:22:11,596 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/verifythis/elimination_max_rec.c-witness.graphml [2021-01-06 19:22:11,596 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 19:22:11,598 INFO L168 Benchmark]: Toolchain (without parser) took 8377.01 ms. Allocated memory was 163.6 MB in the beginning and 216.0 MB in the end (delta: 52.4 MB). Free memory was 138.3 MB in the beginning and 98.4 MB in the end (delta: 40.0 MB). Peak memory consumption was 93.9 MB. Max. memory is 8.0 GB. [2021-01-06 19:22:11,599 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory was 136.7 MB in the beginning and 136.6 MB in the end (delta: 102.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 19:22:11,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.89 ms. Allocated memory is still 163.6 MB. Free memory was 138.0 MB in the beginning and 128.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 19:22:11,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.02 ms. Allocated memory is still 163.6 MB. Free memory was 128.1 MB in the beginning and 126.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 19:22:11,600 INFO L168 Benchmark]: Boogie Preprocessor took 54.19 ms. Allocated memory is still 163.6 MB. Free memory was 126.2 MB in the beginning and 125.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 19:22:11,601 INFO L168 Benchmark]: RCFGBuilder took 600.01 ms. Allocated memory is still 163.6 MB. Free memory was 125.2 MB in the beginning and 108.6 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-01-06 19:22:11,602 INFO L168 Benchmark]: TraceAbstraction took 7265.40 ms. Allocated memory was 163.6 MB in the beginning and 216.0 MB in the end (delta: 52.4 MB). Free memory was 108.1 MB in the beginning and 101.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 60.3 MB. Max. memory is 8.0 GB. [2021-01-06 19:22:11,602 INFO L168 Benchmark]: Witness Printer took 69.85 ms. Allocated memory is still 216.0 MB. Free memory was 101.5 MB in the beginning and 98.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 19:22:11,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory was 136.7 MB in the beginning and 136.6 MB in the end (delta: 102.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 296.89 ms. Allocated memory is still 163.6 MB. Free memory was 138.0 MB in the beginning and 128.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 75.02 ms. Allocated memory is still 163.6 MB. Free memory was 128.1 MB in the beginning and 126.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.19 ms. Allocated memory is still 163.6 MB. Free memory was 126.2 MB in the beginning and 125.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 600.01 ms. Allocated memory is still 163.6 MB. Free memory was 125.2 MB in the beginning and 108.6 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7265.40 ms. Allocated memory was 163.6 MB in the beginning and 216.0 MB in the end (delta: 52.4 MB). Free memory was 108.1 MB in the beginning and 101.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 60.3 MB. Max. memory is 8.0 GB. * Witness Printer took 69.85 ms. Allocated memory is still 216.0 MB. Free memory was 101.5 MB in the beginning and 98.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 106 SDtfs, 205 SDslu, 178 SDs, 0 SdLazy, 200 SolverSat, 80 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=2, 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, 4 MinimizatonAttempts, 44 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 63 HoareAnnotationTreeSize, 10 FomulaSimplifications, 56 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 144 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 88 ConstructedInterpolants, 4 QuantifiedInterpolants, 7478 SizeOfPredicates, 29 NumberOfNonLiveVariables, 286 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 2/10 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...