/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/bitvector/gcd_4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:36:36,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:36:36,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:36:36,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:36:36,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:36:36,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:36:36,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:36:36,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:36:36,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:36:36,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:36:36,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:36:36,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:36:36,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:36:36,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:36:36,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:36:36,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:36:36,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:36:36,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 22:36:36,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 22:36:36,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 22:36:36,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 22:36:36,161 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:36:36,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:36:36,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:36:36,164 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:36:36,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:36:36,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:36:36,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:36:36,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:36:36,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:36:36,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:36:36,167 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:36:36,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:36:36,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:36:36,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:36:36,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:36:36,169 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:36:36,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:36:36,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:36:36,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:36:36,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:36:36,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:36:36,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:36:36,170 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:36:36,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:36:36,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:36:36,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:36:36,649 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:36:36,650 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:36:36,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/gcd_4.c [2021-02-23 22:36:36,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/044ba33b8/da0259cfdbd948cbbc08514262625b78/FLAGd6f53d2c9 [2021-02-23 22:36:37,444 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:36:37,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/gcd_4.c [2021-02-23 22:36:37,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/044ba33b8/da0259cfdbd948cbbc08514262625b78/FLAGd6f53d2c9 [2021-02-23 22:36:37,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/044ba33b8/da0259cfdbd948cbbc08514262625b78 [2021-02-23 22:36:37,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:36:37,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:36:37,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:36:37,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:36:37,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:36:37,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:36:37" (1/1) ... [2021-02-23 22:36:37,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@556ee95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:37, skipping insertion in model container [2021-02-23 22:36:37,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:36:37" (1/1) ... [2021-02-23 22:36:37,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:36:37,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:36:38,030 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/gcd_4.c[357,370] [2021-02-23 22:36:38,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:36:38,056 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:36:38,070 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/gcd_4.c[357,370] [2021-02-23 22:36:38,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:36:38,094 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:36:38,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:38 WrapperNode [2021-02-23 22:36:38,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:36:38,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:36:38,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:36:38,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:36:38,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:38" (1/1) ... [2021-02-23 22:36:38,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:38" (1/1) ... [2021-02-23 22:36:38,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:38" (1/1) ... [2021-02-23 22:36:38,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:38" (1/1) ... [2021-02-23 22:36:38,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:38" (1/1) ... [2021-02-23 22:36:38,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:38" (1/1) ... [2021-02-23 22:36:38,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:38" (1/1) ... [2021-02-23 22:36:38,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:36:38,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:36:38,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:36:38,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:36:38,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:38" (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 [2021-02-23 22:36:38,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:36:38,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:36:38,249 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:36:38,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 22:36:38,249 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd_test [2021-02-23 22:36:38,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:36:38,250 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:36:38,250 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:36:38,250 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:36:38,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:36:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 22:36:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 22:36:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure gcd_test [2021-02-23 22:36:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:36:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:36:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:36:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:36:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:36:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:36:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:36:38,663 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:36:38,664 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 22:36:38,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:36:38 BoogieIcfgContainer [2021-02-23 22:36:38,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:36:38,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:36:38,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:36:38,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:36:38,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:36:37" (1/3) ... [2021-02-23 22:36:38,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a48929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:36:38, skipping insertion in model container [2021-02-23 22:36:38,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:38" (2/3) ... [2021-02-23 22:36:38,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a48929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:36:38, skipping insertion in model container [2021-02-23 22:36:38,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:36:38" (3/3) ... [2021-02-23 22:36:38,706 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2021-02-23 22:36:38,718 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:36:38,724 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:36:38,746 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:36:38,772 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:36:38,772 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:36:38,772 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:36:38,773 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:36:38,773 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:36:38,773 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:36:38,773 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:36:38,773 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:36:38,790 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2021-02-23 22:36:38,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-23 22:36:38,800 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:38,801 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 22:36:38,801 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:38,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:38,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1981155203, now seen corresponding path program 1 times [2021-02-23 22:36:38,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:38,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760901888] [2021-02-23 22:36:38,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:38,989 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-23 22:36:38,990 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-23 22:36:38,990 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:36:38,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:36:39,022 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-23 22:36:39,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:36:39 BoogieIcfgContainer [2021-02-23 22:36:39,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:36:39,027 INFO L168 Benchmark]: Toolchain (without parser) took 1185.90 ms. Allocated memory is still 163.6 MB. Free memory was 140.0 MB in the beginning and 135.2 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:39,031 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 163.6 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:36:39,033 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.28 ms. Allocated memory is still 163.6 MB. Free memory was 138.8 MB in the beginning and 128.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:39,036 INFO L168 Benchmark]: Boogie Preprocessor took 39.45 ms. Allocated memory is still 163.6 MB. Free memory was 128.9 MB in the beginning and 127.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:39,038 INFO L168 Benchmark]: RCFGBuilder took 529.95 ms. Allocated memory is still 163.6 MB. Free memory was 127.4 MB in the beginning and 147.0 MB in the end (delta: -19.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:39,039 INFO L168 Benchmark]: TraceAbstraction took 355.42 ms. Allocated memory is still 163.6 MB. Free memory was 146.2 MB in the beginning and 135.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:39,049 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 163.6 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 245.28 ms. Allocated memory is still 163.6 MB. Free memory was 138.8 MB in the beginning and 128.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.45 ms. Allocated memory is still 163.6 MB. Free memory was 128.9 MB in the beginning and 127.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 529.95 ms. Allocated memory is still 163.6 MB. Free memory was 127.4 MB in the beginning and 147.0 MB in the end (delta: -19.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 355.42 ms. Allocated memory is still 163.6 MB. Free memory was 146.2 MB in the beginning and 135.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L34] long x; [L35] long y; [L36] long g; [L38] x = 63 [L39] y = 18 [L41] CALL, EXPR gcd_test(x, y) [L14] COND FALSE !(a < 0) [L15] COND FALSE !(b < 0) [L17] COND TRUE a == 0 [L18] return b; [L41] RET, EXPR gcd_test(x, y) [L41] g = gcd_test(x, y) [L43] CALL __VERIFIER_assert(x % g == 0) [L7] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, 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=51occurred 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...