/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=LOWLEXORDER --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 0.1.25-177f698 [2020-08-21 18:06:15,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:06:15,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:06:15,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:06:15,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:06:15,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:06:15,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:06:15,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:06:15,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:06:15,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:06:15,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:06:15,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:06:15,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:06:15,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:06:15,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:06:15,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:06:15,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:06:15,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:06:15,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:06:15,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:06:15,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:06:15,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:06:15,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:06:15,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:06:15,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:06:15,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:06:15,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:06:15,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:06:15,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:06:15,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:06:15,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:06:15,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:06:15,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:06:15,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:06:15,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:06:15,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:06:15,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:06:15,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:06:15,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:06:15,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:06:15,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:06:15,717 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 [2020-08-21 18:06:15,748 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:06:15,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:06:15,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:06:15,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:06:15,750 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:06:15,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:06:15,750 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:06:15,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:06:15,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:06:15,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:06:15,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:06:15,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:06:15,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:06:15,752 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:06:15,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:06:15,752 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:06:15,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:06:15,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:06:15,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:06:15,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:06:15,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:06:15,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:06:15,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:06:15,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:06:15,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:06:15,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:06:15,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:06:15,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:06:15,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:06:15,755 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=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:06:16,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:06:16,075 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:06:16,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:06:16,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:06:16,080 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:06:16,081 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c [2020-08-21 18:06:16,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5f67478d/ed4acba434624cd58f2634b4fb42d40c/FLAG4eeefc937 [2020-08-21 18:06:16,630 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:06:16,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c [2020-08-21 18:06:16,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5f67478d/ed4acba434624cd58f2634b4fb42d40c/FLAG4eeefc937 [2020-08-21 18:06:16,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5f67478d/ed4acba434624cd58f2634b4fb42d40c [2020-08-21 18:06:17,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:06:17,002 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:06:17,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:06:17,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:06:17,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:06:17,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:06:16" (1/1) ... [2020-08-21 18:06:17,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fcb8091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:17, skipping insertion in model container [2020-08-21 18:06:17,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:06:16" (1/1) ... [2020-08-21 18:06:17,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:06:17,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:06:17,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:06:17,242 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:06:17,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:06:17,270 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:06:17,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:17 WrapperNode [2020-08-21 18:06:17,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:06:17,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:06:17,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:06:17,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:06:17,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:17" (1/1) ... [2020-08-21 18:06:17,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:17" (1/1) ... [2020-08-21 18:06:17,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:17" (1/1) ... [2020-08-21 18:06:17,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:17" (1/1) ... [2020-08-21 18:06:17,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:17" (1/1) ... [2020-08-21 18:06:17,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:17" (1/1) ... [2020-08-21 18:06:17,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:17" (1/1) ... [2020-08-21 18:06:17,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:06:17,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:06:17,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:06:17,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:06:17,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:17" (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 [2020-08-21 18:06:17,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:06:17,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:06:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-08-21 18:06:17,441 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:06:17,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:06:17,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:06:17,441 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-08-21 18:06:17,441 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:06:17,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:06:17,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:06:17,619 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:06:17,619 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 18:06:17,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:06:17 BoogieIcfgContainer [2020-08-21 18:06:17,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:06:17,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:06:17,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:06:17,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:06:17,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:06:16" (1/3) ... [2020-08-21 18:06:17,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca509e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:06:17, skipping insertion in model container [2020-08-21 18:06:17,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:06:17" (2/3) ... [2020-08-21 18:06:17,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca509e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:06:17, skipping insertion in model container [2020-08-21 18:06:17,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:06:17" (3/3) ... [2020-08-21 18:06:17,630 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2020-08-21 18:06:17,641 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:06:17,648 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:06:17,662 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:06:17,686 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:06:17,686 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:06:17,687 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:06:17,687 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:06:17,687 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:06:17,687 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:06:17,687 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:06:17,688 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:06:17,703 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-21 18:06:17,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-21 18:06:17,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:06:17,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:06:17,710 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:06:17,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:06:17,715 INFO L82 PathProgramCache]: Analyzing trace with hash 913793727, now seen corresponding path program 1 times [2020-08-21 18:06:17,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:06:17,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135253781] [2020-08-21 18:06:17,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:06:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:06:17,826 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:06:17,826 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:06:17,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:06:17,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:06:17 BoogieIcfgContainer [2020-08-21 18:06:17,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:06:17,846 INFO L168 Benchmark]: Toolchain (without parser) took 843.30 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 102.8 MB in the beginning and 156.2 MB in the end (delta: -53.5 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. [2020-08-21 18:06:17,847 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 18:06:17,848 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.51 ms. Allocated memory is still 139.5 MB. Free memory was 102.6 MB in the beginning and 93.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-21 18:06:17,849 INFO L168 Benchmark]: Boogie Preprocessor took 104.34 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 93.0 MB in the beginning and 180.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:06:17,850 INFO L168 Benchmark]: RCFGBuilder took 246.37 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 167.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-21 18:06:17,851 INFO L168 Benchmark]: TraceAbstraction took 219.63 ms. Allocated memory is still 201.9 MB. Free memory was 167.7 MB in the beginning and 156.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-08-21 18:06:17,856 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.51 ms. Allocated memory is still 139.5 MB. Free memory was 102.6 MB in the beginning and 93.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.34 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 93.0 MB in the beginning and 180.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 246.37 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 167.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219.63 ms. Allocated memory is still 201.9 MB. Free memory was 167.7 MB in the beginning and 156.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 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<