/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 23:20:53,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 23:20:53,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 23:20:53,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 23:20:53,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 23:20:53,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 23:20:53,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 23:20:53,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 23:20:53,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 23:20:53,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 23:20:53,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 23:20:53,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 23:20:53,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 23:20:53,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 23:20:53,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 23:20:53,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 23:20:53,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 23:20:53,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 23:20:53,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 23:20:53,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 23:20:53,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 23:20:53,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 23:20:53,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 23:20:53,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 23:20:53,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 23:20:53,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 23:20:53,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 23:20:53,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 23:20:53,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 23:20:53,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 23:20:53,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 23:20:53,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 23:20:53,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 23:20:53,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 23:20:53,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 23:20:53,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 23:20:53,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 23:20:53,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 23:20:53,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 23:20:53,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 23:20:53,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 23:20:53,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-27 23:20:53,598 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 23:20:53,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 23:20:53,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 23:20:53,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 23:20:53,601 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 23:20:53,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 23:20:53,602 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 23:20:53,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 23:20:53,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 23:20:53,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 23:20:53,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 23:20:53,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 23:20:53,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 23:20:53,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 23:20:53,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 23:20:53,603 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 23:20:53,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 23:20:53,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 23:20:53,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 23:20:53,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 23:20:53,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 23:20:53,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 23:20:53,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 23:20:53,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 23:20:53,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 23:20:53,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 23:20:53,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 23:20:53,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 23:20:53,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 23:20:53,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-27 23:20:54,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 23:20:54,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 23:20:54,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 23:20:54,180 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 23:20:54,180 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 23:20:54,181 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c [2020-08-27 23:20:54,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5b6a548d/bc2b0d0bcaed44139280dc6d392d6d51/FLAG1bf2f7836 [2020-08-27 23:20:54,797 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 23:20:54,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c [2020-08-27 23:20:54,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5b6a548d/bc2b0d0bcaed44139280dc6d392d6d51/FLAG1bf2f7836 [2020-08-27 23:20:55,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5b6a548d/bc2b0d0bcaed44139280dc6d392d6d51 [2020-08-27 23:20:55,136 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 23:20:55,139 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 23:20:55,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 23:20:55,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 23:20:55,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 23:20:55,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:20:55" (1/1) ... [2020-08-27 23:20:55,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e92836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:20:55, skipping insertion in model container [2020-08-27 23:20:55,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:20:55" (1/1) ... [2020-08-27 23:20:55,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 23:20:55,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 23:20:55,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 23:20:55,437 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 23:20:55,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 23:20:55,469 INFO L208 MainTranslator]: Completed translation [2020-08-27 23:20:55,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:20:55 WrapperNode [2020-08-27 23:20:55,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 23:20:55,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 23:20:55,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 23:20:55,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 23:20:55,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:20:55" (1/1) ... [2020-08-27 23:20:55,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:20:55" (1/1) ... [2020-08-27 23:20:55,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:20:55" (1/1) ... [2020-08-27 23:20:55,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:20:55" (1/1) ... [2020-08-27 23:20:55,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:20:55" (1/1) ... [2020-08-27 23:20:55,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:20:55" (1/1) ... [2020-08-27 23:20:55,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:20:55" (1/1) ... [2020-08-27 23:20:55,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 23:20:55,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 23:20:55,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 23:20:55,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 23:20:55,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:20:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 23:20:55,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 23:20:55,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 23:20:55,659 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-08-27 23:20:55,660 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 23:20:55,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 23:20:55,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 23:20:55,660 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-08-27 23:20:55,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 23:20:55,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 23:20:55,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 23:20:55,866 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 23:20:55,866 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-27 23:20:55,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:20:55 BoogieIcfgContainer [2020-08-27 23:20:55,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 23:20:55,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 23:20:55,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 23:20:55,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 23:20:55,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:20:55" (1/3) ... [2020-08-27 23:20:55,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d424294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:20:55, skipping insertion in model container [2020-08-27 23:20:55,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:20:55" (2/3) ... [2020-08-27 23:20:55,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d424294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:20:55, skipping insertion in model container [2020-08-27 23:20:55,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:20:55" (3/3) ... [2020-08-27 23:20:55,882 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2020-08-27 23:20:55,894 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 23:20:55,904 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 23:20:55,954 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 23:20:55,996 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 23:20:55,996 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 23:20:55,996 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 23:20:55,996 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 23:20:55,997 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 23:20:55,997 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 23:20:55,997 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 23:20:55,997 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 23:20:56,024 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-27 23:20:56,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-27 23:20:56,033 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 23:20:56,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 23:20:56,035 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 23:20:56,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 23:20:56,042 INFO L82 PathProgramCache]: Analyzing trace with hash 913793727, now seen corresponding path program 1 times [2020-08-27 23:20:56,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 23:20:56,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918470005] [2020-08-27 23:20:56,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 23:20:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-27 23:20:56,181 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-27 23:20:56,182 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 23:20:56,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 23:20:56,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:20:56 BoogieIcfgContainer [2020-08-27 23:20:56,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 23:20:56,210 INFO L168 Benchmark]: Toolchain (without parser) took 1070.65 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 101.1 MB in the beginning and 154.2 MB in the end (delta: -53.1 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. [2020-08-27 23:20:56,212 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-27 23:20:56,213 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.26 ms. Allocated memory is still 137.9 MB. Free memory was 100.9 MB in the beginning and 91.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-27 23:20:56,214 INFO L168 Benchmark]: Boogie Preprocessor took 114.33 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 91.4 MB in the beginning and 178.8 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-27 23:20:56,215 INFO L168 Benchmark]: RCFGBuilder took 286.17 ms. Allocated memory is still 199.8 MB. Free memory was 178.8 MB in the beginning and 166.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-27 23:20:56,216 INFO L168 Benchmark]: TraceAbstraction took 333.82 ms. Allocated memory is still 199.8 MB. Free memory was 165.8 MB in the beginning and 154.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-08-27 23:20:56,220 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.26 ms. Allocated memory is still 137.9 MB. Free memory was 100.9 MB in the beginning and 91.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.33 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 91.4 MB in the beginning and 178.8 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 286.17 ms. Allocated memory is still 199.8 MB. Free memory was 178.8 MB in the beginning and 166.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 333.82 ms. Allocated memory is still 199.8 MB. Free memory was 165.8 MB in the beginning and 154.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 34]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftLeft at line 31. Possible FailurePath: [L25] int n = __VERIFIER_nondet_int(); [L26] COND FALSE !(n < 1) [L29] CALL, EXPR hanoi(n) [L17] COND TRUE n == 1 [L18] return 1; [L29] RET, EXPR hanoi(n) [L29] unsigned result = hanoi(n); [L31] COND FALSE !(result+1>0 && result+1 == 1<