/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:30:11,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:30:11,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:30:11,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:30:11,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:30:11,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:30:11,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:30:11,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:30:11,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:30:11,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:30:11,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:30:11,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:30:11,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:30:11,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:30:11,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:30:11,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:30:11,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:30:11,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:30:11,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:30:11,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:30:11,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:30:11,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:30:11,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:30:11,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:30:11,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:30:11,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:30:11,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:30:11,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:30:11,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:30:11,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:30:11,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:30:11,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:30:11,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:30:11,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:30:11,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:30:11,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:30:11,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:30:11,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:30:11,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:30:11,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:30:11,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:30:11,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 05:30:11,489 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:30:11,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:30:11,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:30:11,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:30:11,492 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:30:11,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:30:11,492 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:30:11,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:30:11,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:30:11,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:30:11,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:30:11,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:30:11,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:30:11,495 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:30:11,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:30:11,495 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:30:11,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:30:11,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:30:11,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:30:11,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:30:11,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:30:11,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:30:11,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:30:11,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:30:11,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:30:11,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:30:11,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:30:11,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:30:11,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:30:11,498 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.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 05:30:11,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:30:11,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:30:11,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:30:11,804 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:30:11,805 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:30:11,805 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c [2020-10-13 05:30:11,869 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b59aad0e/74b7a94e89264864a04d0415f0db5cbb/FLAG233200480 [2020-10-13 05:30:12,265 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:30:12,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c [2020-10-13 05:30:12,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b59aad0e/74b7a94e89264864a04d0415f0db5cbb/FLAG233200480 [2020-10-13 05:30:12,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b59aad0e/74b7a94e89264864a04d0415f0db5cbb [2020-10-13 05:30:12,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:30:12,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:30:12,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:30:12,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:30:12,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:30:12,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:30:12" (1/1) ... [2020-10-13 05:30:12,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589fe6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:12, skipping insertion in model container [2020-10-13 05:30:12,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:30:12" (1/1) ... [2020-10-13 05:30:12,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:30:12,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:30:12,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:30:12,880 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:30:12,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:30:12,912 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:30:12,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:12 WrapperNode [2020-10-13 05:30:12,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:30:12,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:30:12,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:30:12,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:30:12,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:12" (1/1) ... [2020-10-13 05:30:12,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:12" (1/1) ... [2020-10-13 05:30:13,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:12" (1/1) ... [2020-10-13 05:30:13,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:12" (1/1) ... [2020-10-13 05:30:13,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:12" (1/1) ... [2020-10-13 05:30:13,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:12" (1/1) ... [2020-10-13 05:30:13,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:12" (1/1) ... [2020-10-13 05:30:13,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:30:13,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:30:13,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:30:13,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:30:13,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:30:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:30:13,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:30:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-10-13 05:30:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:30:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:30:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 05:30:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-10-13 05:30:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:30:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:30:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:30:13,362 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:30:13,362 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 05:30:13,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:30:13 BoogieIcfgContainer [2020-10-13 05:30:13,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:30:13,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:30:13,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:30:13,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:30:13,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:30:12" (1/3) ... [2020-10-13 05:30:13,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a8a898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:30:13, skipping insertion in model container [2020-10-13 05:30:13,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:12" (2/3) ... [2020-10-13 05:30:13,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a8a898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:30:13, skipping insertion in model container [2020-10-13 05:30:13,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:30:13" (3/3) ... [2020-10-13 05:30:13,383 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2020-10-13 05:30:13,395 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:30:13,406 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:30:13,418 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:30:13,442 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:30:13,443 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:30:13,443 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:30:13,443 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:30:13,443 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:30:13,443 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:30:13,444 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:30:13,444 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:30:13,462 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-13 05:30:13,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 05:30:13,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:13,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:30:13,471 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:13,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:13,477 INFO L82 PathProgramCache]: Analyzing trace with hash 913793727, now seen corresponding path program 1 times [2020-10-13 05:30:13,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:13,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038571930] [2020-10-13 05:30:13,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 05:30:13,584 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 05:30:13,585 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 05:30:13,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:30:13,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 05:30:13 BoogieIcfgContainer [2020-10-13 05:30:13,607 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 05:30:13,610 INFO L168 Benchmark]: Toolchain (without parser) took 946.18 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 101.8 MB in the beginning and 158.0 MB in the end (delta: -56.2 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:13,611 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 05:30:13,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.79 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:13,614 INFO L168 Benchmark]: Boogie Preprocessor took 131.83 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 92.1 MB in the beginning and 183.0 MB in the end (delta: -90.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:13,614 INFO L168 Benchmark]: RCFGBuilder took 322.38 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 169.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:13,615 INFO L168 Benchmark]: TraceAbstraction took 234.48 ms. Allocated memory is still 203.9 MB. Free memory was 169.5 MB in the beginning and 158.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:13,620 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 244.79 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.83 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 92.1 MB in the beginning and 183.0 MB in the end (delta: -90.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 322.38 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 169.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234.48 ms. Allocated memory is still 203.9 MB. Free memory was 169.5 MB in the beginning and 158.0 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<