/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/ldv-regression/test26-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:05:29,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:05:29,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:05:29,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 23:05:29,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:05:29,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:05:29,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:05:29,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:05:29,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:05:29,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:05:29,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:05:29,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:05:29,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:05:29,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:05:29,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:05:29,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:05:29,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 23:05:29,631 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 23:05:29,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:05:29,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:05:29,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:05:29,659 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:05:29,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:05:29,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:05:29,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:05:29,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:05:29,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:05:29,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:05:29,661 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:05:29,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:05:29,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:05:29,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:05:29,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:05:29,663 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:05:29,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:05:29,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:05:29,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:05:29,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:05:29,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:05:29,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:05:29,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:05:30,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:05:30,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:05:30,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:05:30,138 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:05:30,140 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:05:30,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test26-2.c [2021-02-23 23:05:30,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de7ca84b9/d2439fa9c6524b90ba54bc229d7664d4/FLAG3fdaf3f78 [2021-02-23 23:05:30,813 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:05:30,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test26-2.c [2021-02-23 23:05:30,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de7ca84b9/d2439fa9c6524b90ba54bc229d7664d4/FLAG3fdaf3f78 [2021-02-23 23:05:31,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de7ca84b9/d2439fa9c6524b90ba54bc229d7664d4 [2021-02-23 23:05:31,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:05:31,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:05:31,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:05:31,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:05:31,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:05:31,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:05:31" (1/1) ... [2021-02-23 23:05:31,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2423b306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:31, skipping insertion in model container [2021-02-23 23:05:31,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:05:31" (1/1) ... [2021-02-23 23:05:31,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:05:31,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:05:31,405 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/test26-2.c[493,506] [2021-02-23 23:05:31,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:05:31,421 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:05:31,439 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/test26-2.c[493,506] [2021-02-23 23:05:31,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:05:31,457 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:05:31,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:31 WrapperNode [2021-02-23 23:05:31,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:05:31,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:05:31,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:05:31,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:05:31,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:31" (1/1) ... [2021-02-23 23:05:31,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:31" (1/1) ... [2021-02-23 23:05:31,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:31" (1/1) ... [2021-02-23 23:05:31,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:31" (1/1) ... [2021-02-23 23:05:31,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:31" (1/1) ... [2021-02-23 23:05:31,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:31" (1/1) ... [2021-02-23 23:05:31,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:31" (1/1) ... [2021-02-23 23:05:31,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:05:31,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:05:31,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:05:31,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:05:31,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:31" (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 23:05:31,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:05:31,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:05:31,616 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:05:31,616 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2021-02-23 23:05:31,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:05:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:05:31,617 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:05:31,617 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:05:31,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:05:31,617 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2021-02-23 23:05:31,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:05:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:05:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:05:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:05:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:05:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:05:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:05:32,117 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:05:32,118 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 23:05:32,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:05:32 BoogieIcfgContainer [2021-02-23 23:05:32,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:05:32,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:05:32,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:05:32,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:05:32,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:05:31" (1/3) ... [2021-02-23 23:05:32,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e88476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:05:32, skipping insertion in model container [2021-02-23 23:05:32,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:31" (2/3) ... [2021-02-23 23:05:32,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e88476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:05:32, skipping insertion in model container [2021-02-23 23:05:32,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:05:32" (3/3) ... [2021-02-23 23:05:32,139 INFO L111 eAbstractionObserver]: Analyzing ICFG test26-2.c [2021-02-23 23:05:32,148 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:05:32,154 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:05:32,178 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:05:32,208 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:05:32,208 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:05:32,208 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:05:32,209 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:05:32,209 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:05:32,209 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:05:32,209 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:05:32,209 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:05:32,227 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-02-23 23:05:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-23 23:05:32,243 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:32,245 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] [2021-02-23 23:05:32,245 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:32,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:32,261 INFO L82 PathProgramCache]: Analyzing trace with hash -596832601, now seen corresponding path program 1 times [2021-02-23 23:05:32,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:32,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766600513] [2021-02-23 23:05:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:05:32,554 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:05:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:05:32,598 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:05:32,636 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 23:05:32,637 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 23:05:32,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:05:32,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:05:32 BoogieIcfgContainer [2021-02-23 23:05:32,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:05:32,710 INFO L168 Benchmark]: Toolchain (without parser) took 1506.11 ms. Allocated memory is still 151.0 MB. Free memory was 127.8 MB in the beginning and 117.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:32,712 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:05:32,713 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.13 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:32,717 INFO L168 Benchmark]: Boogie Preprocessor took 39.95 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:32,718 INFO L168 Benchmark]: RCFGBuilder took 621.37 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 132.9 MB in the end (delta: -17.7 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:32,723 INFO L168 Benchmark]: TraceAbstraction took 575.66 ms. Allocated memory is still 151.0 MB. Free memory was 132.9 MB in the beginning and 117.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:32,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 242.13 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.95 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 621.37 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 132.9 MB in the end (delta: -17.7 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 575.66 ms. Allocated memory is still 151.0 MB. Free memory was 132.9 MB in the beginning and 117.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L5-L7] struct dummy { int a, b; } global = {0, 1}; VAL [\old(global)=null, \old(global)=null, global={3:0}] [L16] struct dummy *pd = &global; VAL [global={3:0}, pd={3:0}] [L18] CALL assign(&pd->b, &pd->b) VAL [global={3:0}, pa={3:4}, pb={3:4}] [L11] EXPR \read(*pb) VAL [\read(*pb)=1, global={3:0}, pa={3:4}, pa={3:4}, pb={3:4}, pb={3:4}] [L11] *pa = *pb VAL [\read(*pb)=1, global={3:0}, pa={3:4}, pa={3:4}, pb={3:4}, pb={3:4}] [L18] RET assign(&pd->b, &pd->b) VAL [global={3:0}, pd={3:0}] [L20] EXPR pd->a VAL [global={3:0}, pd={3:0}, pd->a=0] [L20] EXPR global.b VAL [global={3:0}, global.b=1, pd={3:0}, pd->a=0] [L20] COND TRUE pd->a != global.b VAL [global={3:0}, global.b=1, pd={3:0}, pd->a=0] [L26] reach_error() VAL [global={3:0}, pd={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, 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=40occurred 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...