/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/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/recursive_list.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:56:15,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:56:15,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:56:15,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:56:15,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:56:15,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:56:15,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:56:15,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:56:15,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:56:15,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:56:15,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:56:15,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:56:15,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:56:15,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:56:15,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:56:15,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:56:15,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:56:15,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:56:15,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:56:15,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:56:15,892 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:56:15,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:56:15,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:56:15,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:56:15,922 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:56:15,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:56:15,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:56:15,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:56:15,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:56:15,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:56:15,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:56:15,924 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:56:15,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:56:15,925 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:56:15,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:56:15,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:56:15,926 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:56:15,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:56:15,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:56:15,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:56:15,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:56:15,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:56:15,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:56:15,928 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:56:15,928 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:56:16,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:56:16,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:56:16,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:56:16,368 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:56:16,369 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:56:16,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/recursive_list.i [2021-02-22 01:56:16,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13b18c8b7/2b96758a36984bc39199b3dfb48314dd/FLAGcb4bd6a7f [2021-02-22 01:56:17,196 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:56:17,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/recursive_list.i [2021-02-22 01:56:17,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13b18c8b7/2b96758a36984bc39199b3dfb48314dd/FLAGcb4bd6a7f [2021-02-22 01:56:17,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13b18c8b7/2b96758a36984bc39199b3dfb48314dd [2021-02-22 01:56:17,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:56:17,587 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:56:17,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:56:17,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:56:17,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:56:17,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:56:17" (1/1) ... [2021-02-22 01:56:17,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf557d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:17, skipping insertion in model container [2021-02-22 01:56:17,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:56:17" (1/1) ... [2021-02-22 01:56:17,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:56:17,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:56:17,846 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/recursive_list.i[409,422] [2021-02-22 01:56:17,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:56:17,901 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:56:17,918 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/recursive_list.i[409,422] [2021-02-22 01:56:17,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:56:17,958 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:56:17,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:17 WrapperNode [2021-02-22 01:56:17,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:56:17,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:56:17,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:56:17,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:56:17,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:17" (1/1) ... [2021-02-22 01:56:17,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:17" (1/1) ... [2021-02-22 01:56:17,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:17" (1/1) ... [2021-02-22 01:56:17,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:17" (1/1) ... [2021-02-22 01:56:18,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:17" (1/1) ... [2021-02-22 01:56:18,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:17" (1/1) ... [2021-02-22 01:56:18,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:17" (1/1) ... [2021-02-22 01:56:18,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:56:18,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:56:18,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:56:18,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:56:18,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:17" (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 [2021-02-22 01:56:18,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:56:18,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:56:18,129 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:56:18,130 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2021-02-22 01:56:18,130 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_memory [2021-02-22 01:56:18,130 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2021-02-22 01:56:18,130 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:56:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:56:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:56:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:56:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:56:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:56:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure err [2021-02-22 01:56:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_memory [2021-02-22 01:56:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:56:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure append [2021-02-22 01:56:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:56:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:56:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:56:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:56:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:56:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:56:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:56:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:56:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:56:18,535 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:56:18,535 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:56:18,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:56:18 BoogieIcfgContainer [2021-02-22 01:56:18,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:56:18,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:56:18,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:56:18,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:56:18,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:56:17" (1/3) ... [2021-02-22 01:56:18,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c74fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:56:18, skipping insertion in model container [2021-02-22 01:56:18,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:17" (2/3) ... [2021-02-22 01:56:18,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c74fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:56:18, skipping insertion in model container [2021-02-22 01:56:18,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:56:18" (3/3) ... [2021-02-22 01:56:18,559 INFO L111 eAbstractionObserver]: Analyzing ICFG recursive_list.i [2021-02-22 01:56:18,577 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:56:18,585 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:56:18,605 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:56:18,630 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:56:18,630 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:56:18,630 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:56:18,630 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:56:18,631 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:56:18,631 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:56:18,631 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:56:18,631 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:56:18,648 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2021-02-22 01:56:18,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-22 01:56:18,666 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:56:18,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:56:18,672 INFO L428 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:56:18,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:56:18,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1199266181, now seen corresponding path program 1 times [2021-02-22 01:56:18,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:56:18,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446427884] [2021-02-22 01:56:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:56:18,792 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:56:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:56:19,106 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:56:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:56:19,242 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:56:19,325 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:56:19,326 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:56:19,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:56:19,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:56:19 BoogieIcfgContainer [2021-02-22 01:56:19,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:56:19,366 INFO L168 Benchmark]: Toolchain (without parser) took 1788.09 ms. Allocated memory is still 160.4 MB. Free memory was 136.3 MB in the beginning and 118.4 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:19,369 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 160.4 MB. Free memory is still 133.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:56:19,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.03 ms. Allocated memory is still 160.4 MB. Free memory was 135.1 MB in the beginning and 125.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:19,375 INFO L168 Benchmark]: Boogie Preprocessor took 66.59 ms. Allocated memory is still 160.4 MB. Free memory was 125.3 MB in the beginning and 123.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:19,377 INFO L168 Benchmark]: RCFGBuilder took 512.27 ms. Allocated memory is still 160.4 MB. Free memory was 123.7 MB in the beginning and 139.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:19,378 INFO L168 Benchmark]: TraceAbstraction took 817.50 ms. Allocated memory is still 160.4 MB. Free memory was 138.9 MB in the beginning and 118.4 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:19,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 160.4 MB. Free memory is still 133.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 368.03 ms. Allocated memory is still 160.4 MB. Free memory was 135.1 MB in the beginning and 125.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 66.59 ms. Allocated memory is still 160.4 MB. Free memory was 125.3 MB in the beginning and 123.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 512.27 ms. Allocated memory is still 160.4 MB. Free memory was 123.7 MB in the beginning and 139.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 817.50 ms. Allocated memory is still 160.4 MB. Free memory was 138.9 MB in the beginning and 118.4 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int i = 1; [L39] struct list *l,m; [L40] l = &m [L41] l->next = 0 [L42] l->n = 0 [L44] CALL, EXPR append(l, 1) [L27] struct list *new_el; [L29] CALL, EXPR allocate_memory() [L22] return malloc(8U); [L29] RET, EXPR allocate_memory() [L29] new_el = allocate_memory() [L31] new_el->n = n [L32] new_el->next = l [L34] return new_el; [L44] RET, EXPR append(l, 1) [L44] l = append(l, 1) [L45] CALL, EXPR append(l, 2) [L27] struct list *new_el; [L29] CALL, EXPR allocate_memory() [L22] return malloc(8U); [L29] RET, EXPR allocate_memory() [L29] new_el = allocate_memory() [L31] new_el->n = n [L32] new_el->next = l [L34] return new_el; [L45] RET, EXPR append(l, 2) [L45] l = append(l, 2) [L50] EXPR l->next [L50] EXPR l->next->next [L50] EXPR l->next->next->n [L50] COND TRUE l->next->next->n == 0 [L50] CALL err() [L10] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 2, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...