/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 15:22:38,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 15:22:38,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 15:22:38,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 15:22:38,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 15:22:38,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 15:22:38,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 15:22:38,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 15:22:38,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 15:22:38,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 15:22:38,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 15:22:38,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 15:22:38,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 15:22:38,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 15:22:38,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 15:22:38,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 15:22:38,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 15:22:38,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 15:22:38,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 15:22:38,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 15:22:38,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 15:22:38,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 15:22:38,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 15:22:38,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 15:22:38,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 15:22:38,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 15:22:38,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 15:22:38,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 15:22:38,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 15:22:38,138 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 15:22:38,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 15:22:38,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 15:22:38,143 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 15:22:38,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 15:22:38,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 15:22:38,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 15:22:38,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 15:22:38,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 15:22:38,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 15:22:38,144 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 15:22:38,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 15:22:38,145 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 15:22:38,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 15:22:38,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 15:22:38,145 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 15:22:38,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 15:22:38,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 15:22:38,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 15:22:38,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 15:22:38,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 15:22:38,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 15:22:38,149 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation [2020-07-07 15:22:38,428 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 15:22:38,440 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 15:22:38,443 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 15:22:38,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 15:22:38,445 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 15:22:38,446 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c [2020-07-07 15:22:38,506 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5254814d2/89eafcf41a2b42fe92ad0ff5c1244dbd/FLAG5a8a32a68 [2020-07-07 15:22:38,913 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 15:22:38,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c [2020-07-07 15:22:38,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5254814d2/89eafcf41a2b42fe92ad0ff5c1244dbd/FLAG5a8a32a68 [2020-07-07 15:22:39,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5254814d2/89eafcf41a2b42fe92ad0ff5c1244dbd [2020-07-07 15:22:39,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 15:22:39,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 15:22:39,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 15:22:39,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 15:22:39,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 15:22:39,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 03:22:39" (1/1) ... [2020-07-07 15:22:39,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106af91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:22:39, skipping insertion in model container [2020-07-07 15:22:39,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 03:22:39" (1/1) ... [2020-07-07 15:22:39,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 15:22:39,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 15:22:39,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 15:22:39,574 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 15:22:39,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 15:22:39,604 INFO L208 MainTranslator]: Completed translation [2020-07-07 15:22:39,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:22:39 WrapperNode [2020-07-07 15:22:39,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 15:22:39,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 15:22:39,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 15:22:39,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 15:22:39,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:22:39" (1/1) ... [2020-07-07 15:22:39,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:22:39" (1/1) ... [2020-07-07 15:22:39,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:22:39" (1/1) ... [2020-07-07 15:22:39,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:22:39" (1/1) ... [2020-07-07 15:22:39,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:22:39" (1/1) ... [2020-07-07 15:22:39,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:22:39" (1/1) ... [2020-07-07 15:22:39,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:22:39" (1/1) ... [2020-07-07 15:22:39,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 15:22:39,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 15:22:39,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 15:22:39,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 15:22:39,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:22:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-07 15:22:39,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 15:22:39,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 15:22:39,772 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-07-07 15:22:39,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 15:22:39,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 15:22:39,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 15:22:39,773 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-07-07 15:22:39,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 15:22:39,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 15:22:39,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 15:22:40,041 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 15:22:40,042 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 15:22:40,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 03:22:40 BoogieIcfgContainer [2020-07-07 15:22:40,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 15:22:40,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 15:22:40,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 15:22:40,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 15:22:40,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 03:22:39" (1/3) ... [2020-07-07 15:22:40,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219b5870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 03:22:40, skipping insertion in model container [2020-07-07 15:22:40,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:22:39" (2/3) ... [2020-07-07 15:22:40,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219b5870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 03:22:40, skipping insertion in model container [2020-07-07 15:22:40,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 03:22:40" (3/3) ... [2020-07-07 15:22:40,062 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2020-07-07 15:22:40,073 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 15:22:40,082 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 15:22:40,093 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 15:22:40,113 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 15:22:40,113 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 15:22:40,113 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-07 15:22:40,114 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 15:22:40,114 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 15:22:40,114 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 15:22:40,114 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 15:22:40,114 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 15:22:40,127 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-07 15:22:40,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 15:22:40,138 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 15:22:40,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 15:22:40,139 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 15:22:40,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 15:22:40,146 INFO L82 PathProgramCache]: Analyzing trace with hash -476090176, now seen corresponding path program 1 times [2020-07-07 15:22:40,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 15:22:40,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963240835] [2020-07-07 15:22:40,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 15:22:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 15:22:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 15:22:40,210 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 15:22:40,211 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 15:22:40,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 03:22:40 BoogieIcfgContainer [2020-07-07 15:22:40,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 15:22:40,247 INFO L168 Benchmark]: Toolchain (without parser) took 893.25 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 105.2 MB in the beginning and 158.6 MB in the end (delta: -53.5 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-07-07 15:22:40,248 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 15:22:40,249 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.49 ms. Allocated memory is still 146.8 MB. Free memory was 105.0 MB in the beginning and 95.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-07 15:22:40,251 INFO L168 Benchmark]: Boogie Preprocessor took 108.76 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 95.6 MB in the beginning and 183.2 MB in the end (delta: -87.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-07 15:22:40,252 INFO L168 Benchmark]: RCFGBuilder took 336.87 ms. Allocated memory is still 203.9 MB. Free memory was 182.6 MB in the beginning and 170.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-07-07 15:22:40,253 INFO L168 Benchmark]: TraceAbstraction took 192.50 ms. Allocated memory is still 203.9 MB. Free memory was 169.3 MB in the beginning and 158.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-07 15:22:40,263 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 250.49 ms. Allocated memory is still 146.8 MB. Free memory was 105.0 MB in the beginning and 95.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.76 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 95.6 MB in the beginning and 183.2 MB in the end (delta: -87.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 336.87 ms. Allocated memory is still 203.9 MB. Free memory was 182.6 MB in the beginning and 170.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 192.50 ms. Allocated memory is still 203.9 MB. Free memory was 169.3 MB in the beginning and 158.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 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(); VAL [__VERIFIER_nondet_int()=1, n=1] [L26] COND FALSE !(n < 1) VAL [n=1] [L29] CALL, EXPR hanoi(n) VAL [\old(n)=1] [L17] COND TRUE n == 1 VAL [\old(n)=1, n=1] [L18] return 1; VAL [\old(n)=1, \result=1, n=1] [L29] RET, EXPR hanoi(n) VAL [hanoi(n)=1, n=1] [L29] unsigned result = hanoi(n); VAL [hanoi(n)=1, n=1, result=1] [L31] COND FALSE !(result+1>0 && result+1 == 1<