/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/ldv-regression/test08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:37:24,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:37:24,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:37:24,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:37:24,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:37:24,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:37:24,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:37:24,664 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 [2021-02-23 13:37:24,689 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:37:24,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:37:24,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:37:24,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:37:24,692 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:37:24,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:37:24,692 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:37:24,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:37:24,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:37:24,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:37:24,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:37:24,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:37:24,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:37:24,693 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:37:24,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:37:24,694 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:37:24,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:37:24,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:37:24,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:37:24,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:37:24,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:37:24,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:37:24,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:37:24,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:37:24,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:37:24,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:37:24,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:37:24,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:37:24,696 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:37:25,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:37:25,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:37:25,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:37:25,079 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:37:25,080 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:37:25,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test08.c [2021-02-23 13:37:25,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1daeee95/28b2b8a0a7724eb5815b89b0a545973f/FLAG0c2992575 [2021-02-23 13:37:25,815 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:37:25,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test08.c [2021-02-23 13:37:25,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1daeee95/28b2b8a0a7724eb5815b89b0a545973f/FLAG0c2992575 [2021-02-23 13:37:26,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1daeee95/28b2b8a0a7724eb5815b89b0a545973f [2021-02-23 13:37:26,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:37:26,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:37:26,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:37:26,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:37:26,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:37:26,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:37:26" (1/1) ... [2021-02-23 13:37:26,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57df578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:26, skipping insertion in model container [2021-02-23 13:37:26,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:37:26" (1/1) ... [2021-02-23 13:37:26,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:37:26,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:37:26,405 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/test08.c[578,591] [2021-02-23 13:37:26,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:37:26,420 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:37:26,438 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/test08.c[578,591] [2021-02-23 13:37:26,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:37:26,456 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:37:26,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:26 WrapperNode [2021-02-23 13:37:26,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:37:26,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:37:26,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:37:26,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:37:26,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:26" (1/1) ... [2021-02-23 13:37:26,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:26" (1/1) ... [2021-02-23 13:37:26,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:26" (1/1) ... [2021-02-23 13:37:26,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:26" (1/1) ... [2021-02-23 13:37:26,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:26" (1/1) ... [2021-02-23 13:37:26,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:26" (1/1) ... [2021-02-23 13:37:26,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:26" (1/1) ... [2021-02-23 13:37:26,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:37:26,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:37:26,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:37:26,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:37:26,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:26" (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 13:37:26,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:37:26,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:37:26,627 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:37:26,628 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-02-23 13:37:26,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:37:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:37:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:37:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:37:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:37:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-02-23 13:37:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:37:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:37:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:37:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:37:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:37:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:37:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:37:27,124 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:37:27,124 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 13:37:27,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:37:27 BoogieIcfgContainer [2021-02-23 13:37:27,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:37:27,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:37:27,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:37:27,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:37:27,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:37:26" (1/3) ... [2021-02-23 13:37:27,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221d9328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:37:27, skipping insertion in model container [2021-02-23 13:37:27,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:26" (2/3) ... [2021-02-23 13:37:27,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221d9328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:37:27, skipping insertion in model container [2021-02-23 13:37:27,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:37:27" (3/3) ... [2021-02-23 13:37:27,141 INFO L111 eAbstractionObserver]: Analyzing ICFG test08.c [2021-02-23 13:37:27,157 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:37:27,170 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:37:27,217 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:37:27,245 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:37:27,245 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:37:27,245 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:37:27,245 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:37:27,246 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:37:27,246 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:37:27,246 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:37:27,246 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:37:27,263 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2021-02-23 13:37:27,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-23 13:37:27,269 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:37:27,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:37:27,270 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:37:27,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:37:27,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1732386317, now seen corresponding path program 1 times [2021-02-23 13:37:27,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:37:27,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316682538] [2021-02-23 13:37:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:37:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:37:27,454 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:37:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:37:27,501 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:37:27,538 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:37:27,539 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:37:27,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:37:27,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:37:27 BoogieIcfgContainer [2021-02-23 13:37:27,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:37:27,632 INFO L168 Benchmark]: Toolchain (without parser) took 1438.03 ms. Allocated memory is still 174.1 MB. Free memory was 130.4 MB in the beginning and 127.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:27,633 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 174.1 MB. Free memory is still 146.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:37:27,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.79 ms. Allocated memory is still 174.1 MB. Free memory was 156.5 MB in the beginning and 146.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:27,640 INFO L168 Benchmark]: Boogie Preprocessor took 35.69 ms. Allocated memory is still 174.1 MB. Free memory was 146.7 MB in the beginning and 145.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:27,641 INFO L168 Benchmark]: RCFGBuilder took 631.21 ms. Allocated memory is still 174.1 MB. Free memory was 145.2 MB in the beginning and 143.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:27,643 INFO L168 Benchmark]: TraceAbstraction took 493.89 ms. Allocated memory is still 174.1 MB. Free memory was 143.0 MB in the beginning and 127.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:27,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 174.1 MB. Free memory is still 146.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 243.79 ms. Allocated memory is still 174.1 MB. Free memory was 156.5 MB in the beginning and 146.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.69 ms. Allocated memory is still 174.1 MB. Free memory was 146.7 MB in the beginning and 145.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 631.21 ms. Allocated memory is still 174.1 MB. Free memory was 145.2 MB in the beginning and 143.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 493.89 ms. Allocated memory is still 174.1 MB. Free memory was 143.0 MB in the beginning and 127.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 38]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L6] int a, b; [L7] int *p1, *p2; VAL [\old(a)=62, \old(a)=60, \old(b)=64, \old(b)=52, \old(p1)=53, \old(p1)=59, \old(p2)=63, \old(p2)=49, a={5:0}, b={3:0}, p1={0:0}, p2={0:0}] [L21] p1 = &a [L22] p2 = &b [L24] b = 1 [L25] a = 5 [L27] EXPR \read(a) [L27] a-- [L29] CALL, EXPR f() VAL [\old(p1)=5, \old(p1)=0, \old(p2)=0, \old(p2)=0, a={5:0}, b={3:0}, p1={5:0}, p2={3:0}] [L10] EXPR \read(*p1) [L10] EXPR \read(*p2) [L10] EXPR \read(a) [L10] int v = *p1 + *p2 - a; [L11] COND TRUE v == 1 [L12] p1 = p2 [L13] return v; VAL [\old(p1)=0, \old(p1)=5, \old(p2)=0, \old(p2)=0, \result=1, a={5:0}, b={3:0}, p1={3:0}, p2={3:0}, v=1] [L29] RET, EXPR f() VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, a={5:0}, b={3:0}, f()=1, p1={3:0}, p2={3:0}] [L29] a = f() [L31] EXPR \read(a) VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, \read(a)=1, a={5:0}, b={3:0}, p1={3:0}, p2={3:0}] [L31] COND TRUE a && p1 == p2 [L38] reach_error() VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, a={5:0}, b={3:0}, p1={3:0}, p2={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, 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=19occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 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...