/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:36:22,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:36:22,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:36:22,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:36:22,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:36:22,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:36:22,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:36:22,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:36:22,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:36:22,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:36:22,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:36:22,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:36:22,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:36:22,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:36:22,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:36:22,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:36:22,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:36:22,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:36:22,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:36:22,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:36:22,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:36:22,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:36:22,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:36:22,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:36:22,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:36:22,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:36:22,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:36:22,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:36:22,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:36:22,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:36:22,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:36:22,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:36:22,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:36:22,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:36:22,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:36:22,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:36:22,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:36:22,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:36:22,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:36:22,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:36:22,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:36:22,417 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 [2020-10-28 09:36:22,481 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:36:22,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:36:22,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:36:22,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:36:22,485 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:36:22,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:36:22,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:36:22,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:36:22,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:36:22,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:36:22,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:36:22,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:36:22,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:36:22,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:36:22,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:36:22,491 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:36:22,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:36:22,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:36:22,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:36:22,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:36:22,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:36:22,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:36:22,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:36:22,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:36:22,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:36:22,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:36:22,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:36:22,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:36:22,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:36:22,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:36:22,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:36:22,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:36:22,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:36:22,932 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:36:22,933 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:36:22,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c [2020-10-28 09:36:23,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2676d4ecd/45d191acba3547e185e1b323f8a226f3/FLAG579a6958a [2020-10-28 09:36:23,656 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:36:23,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c [2020-10-28 09:36:23,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2676d4ecd/45d191acba3547e185e1b323f8a226f3/FLAG579a6958a [2020-10-28 09:36:24,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2676d4ecd/45d191acba3547e185e1b323f8a226f3 [2020-10-28 09:36:24,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:36:24,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:36:24,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:36:24,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:36:24,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:36:24,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:36:24" (1/1) ... [2020-10-28 09:36:24,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea5aa11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:24, skipping insertion in model container [2020-10-28 09:36:24,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:36:24" (1/1) ... [2020-10-28 09:36:24,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:36:24,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:36:24,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:36:24,294 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:36:24,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:36:24,328 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:36:24,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:24 WrapperNode [2020-10-28 09:36:24,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:36:24,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:36:24,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:36:24,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:36:24,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:24" (1/1) ... [2020-10-28 09:36:24,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:24" (1/1) ... [2020-10-28 09:36:24,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:24" (1/1) ... [2020-10-28 09:36:24,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:24" (1/1) ... [2020-10-28 09:36:24,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:24" (1/1) ... [2020-10-28 09:36:24,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:24" (1/1) ... [2020-10-28 09:36:24,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:24" (1/1) ... [2020-10-28 09:36:24,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:36:24,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:36:24,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:36:24,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:36:24,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:24" (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 [2020-10-28 09:36:24,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:36:24,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:36:24,445 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:36:24,445 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-10-28 09:36:24,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:36:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:36:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:36:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:36:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:36:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:36:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-10-28 09:36:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:36:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:36:24,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:36:24,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:36:24,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:36:24,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:36:24,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:36:24,714 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:36:24,714 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 09:36:24,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:36:24 BoogieIcfgContainer [2020-10-28 09:36:24,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:36:24,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:36:24,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:36:24,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:36:24,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:36:24" (1/3) ... [2020-10-28 09:36:24,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3008dc9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:36:24, skipping insertion in model container [2020-10-28 09:36:24,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:36:24" (2/3) ... [2020-10-28 09:36:24,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3008dc9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:36:24, skipping insertion in model container [2020-10-28 09:36:24,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:36:24" (3/3) ... [2020-10-28 09:36:24,726 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2020-10-28 09:36:24,740 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:36:24,746 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:36:24,762 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:36:24,830 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:36:24,831 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:36:24,831 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:36:24,831 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:36:24,831 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:36:24,831 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:36:24,832 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:36:24,832 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:36:24,862 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-28 09:36:24,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 09:36:24,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:36:24,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:36:24,871 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:36:24,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:36:24,878 INFO L82 PathProgramCache]: Analyzing trace with hash -874294957, now seen corresponding path program 1 times [2020-10-28 09:36:24,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:36:24,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258553515] [2020-10-28 09:36:24,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:36:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 09:36:25,065 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 09:36:25,065 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:36:25,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:36:25,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:36:25 BoogieIcfgContainer [2020-10-28 09:36:25,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:36:25,090 INFO L168 Benchmark]: Toolchain (without parser) took 1066.68 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 125.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.6 MB. Max. memory is 8.0 GB. [2020-10-28 09:36:25,091 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:36:25,092 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.81 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-28 09:36:25,094 INFO L168 Benchmark]: Boogie Preprocessor took 34.70 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:36:25,095 INFO L168 Benchmark]: RCFGBuilder took 350.36 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 102.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 09:36:25,095 INFO L168 Benchmark]: TraceAbstraction took 369.25 ms. Allocated memory is still 151.0 MB. Free memory was 102.3 MB in the beginning and 125.1 MB in the end (delta: -22.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:36:25,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 298.81 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.70 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 350.36 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 102.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 369.25 ms. Allocated memory is still 151.0 MB. Free memory was 102.3 MB in the beginning and 125.1 MB in the end (delta: -22.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftLeft at line 33. Possible FailurePath: [L27] int n = __VERIFIER_nondet_int(); [L28] COND FALSE !(n < 1) [L31] CALL, EXPR hanoi(n) [L19] COND TRUE n == 1 [L20] return 1; [L31] RET, EXPR hanoi(n) [L31] unsigned result = hanoi(n); [L33] COND FALSE !(result+1>0 && result+1 == 1<