/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 [2020-08-28 05:16:30,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-28 05:16:30,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-28 05:16:30,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-28 05:16:30,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-28 05:16:30,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-28 05:16:30,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-28 05:16:30,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-28 05:16:30,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-28 05:16:30,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-28 05:16:30,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-28 05:16:30,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-28 05:16:30,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-28 05:16:30,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-28 05:16:30,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-28 05:16:30,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-28 05:16:30,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-28 05:16:30,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-28 05:16:30,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-28 05:16:30,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-28 05:16:30,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-28 05:16:30,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-28 05:16:30,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-28 05:16:30,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-28 05:16:30,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-28 05:16:30,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-28 05:16:30,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-28 05:16:30,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-28 05:16:30,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-28 05:16:30,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-28 05:16:30,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-28 05:16:30,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-28 05:16:30,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-28 05:16:30,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-28 05:16:30,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-28 05:16:30,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-28 05:16:30,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-28 05:16:30,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-28 05:16:30,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-28 05:16:30,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-28 05:16:30,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-28 05:16:30,350 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 [2020-08-28 05:16:30,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-28 05:16:30,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-28 05:16:30,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-28 05:16:30,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-28 05:16:30,380 INFO L138 SettingsManager]: * Use SBE=true [2020-08-28 05:16:30,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-28 05:16:30,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-28 05:16:30,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-28 05:16:30,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-28 05:16:30,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-28 05:16:30,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-28 05:16:30,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-28 05:16:30,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-28 05:16:30,382 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-28 05:16:30,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-28 05:16:30,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-28 05:16:30,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-28 05:16:30,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-28 05:16:30,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-28 05:16:30,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-28 05:16:30,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-28 05:16:30,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-28 05:16:30,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-28 05:16:30,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-28 05:16:30,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-28 05:16:30,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-28 05:16:30,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-28 05:16:30,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-28 05:16:30,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-28 05:16:30,385 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-28 05:16:30,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-28 05:16:30,908 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-28 05:16:30,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-28 05:16:30,914 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-28 05:16:30,914 INFO L275 PluginConnector]: CDTParser initialized [2020-08-28 05:16:30,916 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c [2020-08-28 05:16:31,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31bba7478/584acac331224ddd850a7f56143df168/FLAGa35315bf4 [2020-08-28 05:16:31,492 INFO L306 CDTParser]: Found 1 translation units. [2020-08-28 05:16:31,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c [2020-08-28 05:16:31,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31bba7478/584acac331224ddd850a7f56143df168/FLAGa35315bf4 [2020-08-28 05:16:31,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31bba7478/584acac331224ddd850a7f56143df168 [2020-08-28 05:16:31,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-28 05:16:31,869 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-28 05:16:31,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-28 05:16:31,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-28 05:16:31,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-28 05:16:31,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 05:16:31" (1/1) ... [2020-08-28 05:16:31,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:31, skipping insertion in model container [2020-08-28 05:16:31,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 05:16:31" (1/1) ... [2020-08-28 05:16:31,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-28 05:16:31,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-28 05:16:32,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 05:16:32,251 INFO L203 MainTranslator]: Completed pre-run [2020-08-28 05:16:32,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 05:16:32,298 INFO L208 MainTranslator]: Completed translation [2020-08-28 05:16:32,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:32 WrapperNode [2020-08-28 05:16:32,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-28 05:16:32,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-28 05:16:32,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-28 05:16:32,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-28 05:16:32,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:32" (1/1) ... [2020-08-28 05:16:32,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:32" (1/1) ... [2020-08-28 05:16:32,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:32" (1/1) ... [2020-08-28 05:16:32,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:32" (1/1) ... [2020-08-28 05:16:32,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:32" (1/1) ... [2020-08-28 05:16:32,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:32" (1/1) ... [2020-08-28 05:16:32,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:32" (1/1) ... [2020-08-28 05:16:32,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-28 05:16:32,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-28 05:16:32,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-28 05:16:32,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-28 05:16:32,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:32" (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 [2020-08-28 05:16:32,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-28 05:16:32,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-28 05:16:32,524 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-08-28 05:16:32,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-28 05:16:32,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-28 05:16:32,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-28 05:16:32,524 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-08-28 05:16:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-28 05:16:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-28 05:16:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-28 05:16:32,732 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-28 05:16:32,732 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-28 05:16:32,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:16:32 BoogieIcfgContainer [2020-08-28 05:16:32,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-28 05:16:32,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-28 05:16:32,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-28 05:16:32,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-28 05:16:32,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 05:16:31" (1/3) ... [2020-08-28 05:16:32,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473a2cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 05:16:32, skipping insertion in model container [2020-08-28 05:16:32,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:16:32" (2/3) ... [2020-08-28 05:16:32,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473a2cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 05:16:32, skipping insertion in model container [2020-08-28 05:16:32,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:16:32" (3/3) ... [2020-08-28 05:16:32,748 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2020-08-28 05:16:32,760 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-28 05:16:32,772 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-28 05:16:32,815 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-28 05:16:32,859 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-28 05:16:32,859 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-28 05:16:32,860 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-28 05:16:32,860 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-28 05:16:32,860 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-28 05:16:32,860 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-28 05:16:32,860 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-28 05:16:32,861 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-28 05:16:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-28 05:16:32,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-28 05:16:32,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-28 05:16:32,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-28 05:16:32,895 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-28 05:16:32,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-28 05:16:32,903 INFO L82 PathProgramCache]: Analyzing trace with hash 913793727, now seen corresponding path program 1 times [2020-08-28 05:16:32,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-28 05:16:32,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951927652] [2020-08-28 05:16:32,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-28 05:16:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-28 05:16:33,031 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-28 05:16:33,032 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-28 05:16:33,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-28 05:16:33,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.08 05:16:33 BoogieIcfgContainer [2020-08-28 05:16:33,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-28 05:16:33,059 INFO L168 Benchmark]: Toolchain (without parser) took 1189.00 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 99.6 MB in the beginning and 154.0 MB in the end (delta: -54.4 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. [2020-08-28 05:16:33,061 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-28 05:16:33,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.45 ms. Allocated memory is still 136.3 MB. Free memory was 99.3 MB in the beginning and 89.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-28 05:16:33,063 INFO L168 Benchmark]: Boogie Preprocessor took 48.41 ms. Allocated memory is still 136.3 MB. Free memory was 89.8 MB in the beginning and 88.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-28 05:16:33,064 INFO L168 Benchmark]: RCFGBuilder took 387.80 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 88.4 MB in the beginning and 165.7 MB in the end (delta: -77.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-28 05:16:33,065 INFO L168 Benchmark]: TraceAbstraction took 316.33 ms. Allocated memory is still 199.2 MB. Free memory was 165.7 MB in the beginning and 154.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-08-28 05:16:33,069 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 430.45 ms. Allocated memory is still 136.3 MB. Free memory was 99.3 MB in the beginning and 89.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.41 ms. Allocated memory is still 136.3 MB. Free memory was 89.8 MB in the beginning and 88.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 387.80 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 88.4 MB in the beginning and 165.7 MB in the end (delta: -77.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 316.33 ms. Allocated memory is still 199.2 MB. Free memory was 165.7 MB in the beginning and 154.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 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<