/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:58:54,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:58:54,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:58:54,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 21:58:54,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 21:58:54,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 21:58:54,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 21:58:54,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 21:58:54,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 21:58:54,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 21:58:54,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 21:58:54,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 21:58:54,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:58:54,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:58:54,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:58:54,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:58:54,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:58:54,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:58:54,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:58:54,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:58:54,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:58:54,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:58:54,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:58:54,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:58:54,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 21:58:54,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 21:58:54,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 21:58:54,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 21:58:54,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 21:58:54,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 21:58:54,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 21:58:54,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 21:58:54,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 21:58:54,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:58:54,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:58:54,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:58:54,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 21:58:54,250 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:58:54,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:58:54,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:58:54,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:58:54,252 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:58:54,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:58:54,253 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:58:54,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:58:54,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:58:54,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:58:54,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:58:54,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:58:54,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:58:54,254 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:58:54,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:58:54,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:58:54,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:58:54,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:58:54,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:58:54,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:58:54,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:58:54,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:58:54,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:58:54,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:58:54,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:58:54,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:58:54,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:58:54,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:58:54,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:58:54,261 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:58:54,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:58:54,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:58:54,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:58:54,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:58:54,650 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:58:54,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c [2020-11-06 21:58:54,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f02556c0/0fc74fda5bfb469eaac71c442004629a/FLAG9fef2339e [2020-11-06 21:58:55,436 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:58:55,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-regression/recHanoi03-1.c [2020-11-06 21:58:55,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f02556c0/0fc74fda5bfb469eaac71c442004629a/FLAG9fef2339e [2020-11-06 21:58:55,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f02556c0/0fc74fda5bfb469eaac71c442004629a [2020-11-06 21:58:55,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:58:55,819 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:58:55,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:58:55,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:58:55,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:58:55,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:55" (1/1) ... [2020-11-06 21:58:55,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e1a8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:55, skipping insertion in model container [2020-11-06 21:58:55,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:55" (1/1) ... [2020-11-06 21:58:55,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:58:55,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:58:56,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:58:56,045 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:58:56,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:58:56,082 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:58:56,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:56 WrapperNode [2020-11-06 21:58:56,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:58:56,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:58:56,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:58:56,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:58:56,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:56" (1/1) ... [2020-11-06 21:58:56,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:56" (1/1) ... [2020-11-06 21:58:56,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:56" (1/1) ... [2020-11-06 21:58:56,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:56" (1/1) ... [2020-11-06 21:58:56,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:56" (1/1) ... [2020-11-06 21:58:56,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:56" (1/1) ... [2020-11-06 21:58:56,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:56" (1/1) ... [2020-11-06 21:58:56,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:58:56,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:58:56,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:58:56,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:58:56,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:56" (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 [2020-11-06 21:58:56,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:58:56,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:58:56,199 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:58:56,199 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-11-06 21:58:56,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:58:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:58:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:58:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:58:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:58:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 21:58:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-11-06 21:58:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:58:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:58:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:58:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:58:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:58:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:58:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:58:56,639 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:58:56,639 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-06 21:58:56,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:56 BoogieIcfgContainer [2020-11-06 21:58:56,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:58:56,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:58:56,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:58:56,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:58:56,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:58:55" (1/3) ... [2020-11-06 21:58:56,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2003b8f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:56, skipping insertion in model container [2020-11-06 21:58:56,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:56" (2/3) ... [2020-11-06 21:58:56,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2003b8f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:56, skipping insertion in model container [2020-11-06 21:58:56,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:56" (3/3) ... [2020-11-06 21:58:56,659 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2020-11-06 21:58:56,675 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:58:56,678 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:58:56,693 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:58:56,755 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:58:56,755 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:58:56,756 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:58:56,756 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:58:56,756 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:58:56,756 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:58:56,756 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:58:56,756 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:58:56,782 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-11-06 21:58:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-06 21:58:56,789 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:56,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:58:56,791 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:56,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:56,799 INFO L82 PathProgramCache]: Analyzing trace with hash -874294957, now seen corresponding path program 1 times [2020-11-06 21:58:56,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:56,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776799256] [2020-11-06 21:58:56,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:58:57,029 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:58:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:58:57,102 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:58:57,149 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:58:57,149 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:58:57,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:58:57,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:58:57 BoogieIcfgContainer [2020-11-06 21:58:57,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:58:57,187 INFO L168 Benchmark]: Toolchain (without parser) took 1372.16 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 124.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:57,188 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 80.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:58:57,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.15 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 117.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:57,190 INFO L168 Benchmark]: Boogie Preprocessor took 39.12 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:57,191 INFO L168 Benchmark]: RCFGBuilder took 518.43 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 102.3 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:57,192 INFO L168 Benchmark]: TraceAbstraction took 539.40 ms. Allocated memory is still 151.0 MB. Free memory was 102.0 MB in the beginning and 124.3 MB in the end (delta: -22.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:58:57,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 80.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.15 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 117.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.12 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 518.43 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 102.3 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 539.40 ms. Allocated memory is still 151.0 MB. Free memory was 102.0 MB in the beginning and 124.3 MB in the end (delta: -22.3 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) VAL [n=1] [L31] CALL, EXPR hanoi(n) VAL [\old(n)=1] [L19] COND TRUE n == 1 [L20] return 1; VAL [\old(n)=1, \result=1, n=1] [L31] RET, EXPR hanoi(n) VAL [hanoi(n)=1, n=1] [L31] unsigned result = hanoi(n); [L33] COND FALSE !(result+1>0 && result+1 == 1<