/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/test21-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:05:23,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:05:23,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:05:23,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 23:05:23,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:05:23,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:05:23,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:05:23,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:05:23,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:05:23,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:05:23,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:05:23,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:05:23,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:05:23,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:05:23,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:05:23,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:05:23,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 23:05:23,297 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 23:05:23,310 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:05:23,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:05:23,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:05:23,313 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:05:23,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:05:23,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:05:23,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:05:23,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:05:23,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:05:23,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:05:23,314 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:05:23,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:05:23,315 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:05:23,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:05:23,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:05:23,316 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:05:23,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:05:23,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:05:23,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:05:23,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:05:23,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:05:23,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:05:23,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:05:23,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:05:23,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:05:23,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:05:23,789 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:05:23,789 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:05:23,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-2.c [2021-02-23 23:05:23,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d50f89540/1bf6844f4f9b41ddb619f55987ace842/FLAG280cc24dd [2021-02-23 23:05:24,471 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:05:24,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test21-2.c [2021-02-23 23:05:24,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d50f89540/1bf6844f4f9b41ddb619f55987ace842/FLAG280cc24dd [2021-02-23 23:05:24,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d50f89540/1bf6844f4f9b41ddb619f55987ace842 [2021-02-23 23:05:24,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:05:24,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:05:24,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:05:24,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:05:24,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:05:24,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:05:24" (1/1) ... [2021-02-23 23:05:24,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd03618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:24, skipping insertion in model container [2021-02-23 23:05:24,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:05:24" (1/1) ... [2021-02-23 23:05:24,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:05:24,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:05:25,095 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/test21-2.c[892,905] [2021-02-23 23:05:25,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:05:25,109 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:05:25,128 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/test21-2.c[892,905] [2021-02-23 23:05:25,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:05:25,146 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:05:25,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:25 WrapperNode [2021-02-23 23:05:25,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:05:25,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:05:25,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:05:25,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:05:25,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:25" (1/1) ... [2021-02-23 23:05:25,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:25" (1/1) ... [2021-02-23 23:05:25,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:25" (1/1) ... [2021-02-23 23:05:25,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:25" (1/1) ... [2021-02-23 23:05:25,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:25" (1/1) ... [2021-02-23 23:05:25,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:25" (1/1) ... [2021-02-23 23:05:25,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:25" (1/1) ... [2021-02-23 23:05:25,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:05:25,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:05:25,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:05:25,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:05:25,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:25" (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 23:05:25,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:05:25,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:05:25,286 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:05:25,286 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2021-02-23 23:05:25,287 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2021-02-23 23:05:25,287 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-02-23 23:05:25,287 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:05:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:05:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:05:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:05:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:05:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:05:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-23 23:05:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-23 23:05:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:05:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2021-02-23 23:05:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-23 23:05:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:05:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:05:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:05:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:05:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:05:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:05:25,762 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:05:25,763 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 23:05:25,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:05:25 BoogieIcfgContainer [2021-02-23 23:05:25,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:05:25,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:05:25,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:05:25,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:05:25,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:05:24" (1/3) ... [2021-02-23 23:05:25,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c78e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:05:25, skipping insertion in model container [2021-02-23 23:05:25,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:25" (2/3) ... [2021-02-23 23:05:25,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c78e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:05:25, skipping insertion in model container [2021-02-23 23:05:25,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:05:25" (3/3) ... [2021-02-23 23:05:25,776 INFO L111 eAbstractionObserver]: Analyzing ICFG test21-2.c [2021-02-23 23:05:25,783 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:05:25,789 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:05:25,808 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:05:25,834 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:05:25,834 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:05:25,834 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:05:25,834 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:05:25,835 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:05:25,835 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:05:25,835 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:05:25,835 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:05:25,852 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2021-02-23 23:05:25,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-02-23 23:05:25,864 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:25,865 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:25,865 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:25,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:25,872 INFO L82 PathProgramCache]: Analyzing trace with hash 69938154, now seen corresponding path program 1 times [2021-02-23 23:05:25,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:25,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7379331] [2021-02-23 23:05:25,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:05:26,079 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:05:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:05:26,148 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:05:26,229 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 23:05:26,230 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 23:05:26,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:05:26,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:05:26 BoogieIcfgContainer [2021-02-23 23:05:26,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:05:26,347 INFO L168 Benchmark]: Toolchain (without parser) took 1523.55 ms. Allocated memory is still 156.2 MB. Free memory was 132.2 MB in the beginning and 115.6 MB in the end (delta: 16.6 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:26,348 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 156.2 MB. Free memory is still 128.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:05:26,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.16 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 121.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:26,351 INFO L168 Benchmark]: Boogie Preprocessor took 37.44 ms. Allocated memory is still 156.2 MB. Free memory was 121.4 MB in the beginning and 119.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:26,352 INFO L168 Benchmark]: RCFGBuilder took 579.39 ms. Allocated memory is still 156.2 MB. Free memory was 119.9 MB in the beginning and 135.6 MB in the end (delta: -15.7 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:26,353 INFO L168 Benchmark]: TraceAbstraction took 577.31 ms. Allocated memory is still 156.2 MB. Free memory was 135.0 MB in the beginning and 115.6 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:26,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 156.2 MB. Free memory is still 128.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 308.16 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 121.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.44 ms. Allocated memory is still 156.2 MB. Free memory was 121.4 MB in the beginning and 119.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 579.39 ms. Allocated memory is still 156.2 MB. Free memory was 119.9 MB in the beginning and 135.6 MB in the end (delta: -15.7 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 577.31 ms. Allocated memory is still 156.2 MB. Free memory was 135.0 MB in the beginning and 115.6 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L11] struct dummy d1, d2; VAL [\old(d1)=60, \old(d1)=52, \old(d2)=58, \old(d2)=54, d1={9:0}, d2={3:0}] [L34] CALL init() VAL [d1={9:0}, d2={3:0}] [L15] d1.a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-1, d1={9:0}, d2={3:0}] [L16] d1.b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-2, d1={9:0}, d2={3:0}] [L18] d2.a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-3, d1={9:0}, d2={3:0}] [L19] d2.b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-4, d1={9:0}, d2={3:0}] [L34] RET init() VAL [d1={9:0}, d2={3:0}] [L35] CALL, EXPR get_dummy() VAL [d1={9:0}, d2={3:0}] [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={9:0}, d1={9:0}, d2={3:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); VAL [\result={9:0}, __VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={9:0}, d1={9:0}, d2={3:0}] [L35] RET, EXPR get_dummy() VAL [d1={9:0}, d2={3:0}, get_dummy()={9:0}] [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); VAL [d1={9:0}, d2={3:0}, get_dummy()={9:0}, pd1={9:0}] [L35] CALL, EXPR get_dummy() VAL [d1={9:0}, d2={3:0}] [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={9:0}, d1={9:0}, d2={3:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); VAL [\result={9:0}, __VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={9:0}, d1={9:0}, d2={3:0}] [L35] RET, EXPR get_dummy() VAL [d1={9:0}, d2={3:0}, get_dummy()={9:0}, pd1={9:0}] [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); VAL [d1={9:0}, d2={3:0}, get_dummy()={9:0}, pd1={9:0}, pd2={9:0}] [L36] COND TRUE pd1 != 0 && pd1 == pd2 VAL [d1={9:0}, d2={3:0}, pd1={9:0}, pd2={9:0}] [L37] CALL, EXPR check(pd1, pd2) VAL [d1={9:0}, d2={3:0}, s1={9:0}, s2={9:0}] [L29] EXPR s1->a VAL [d1={9:0}, d2={3:0}, s1={9:0}, s1={9:0}, s1->a=-1, s2={9:0}, s2={9:0}] [L29] EXPR s2->b VAL [d1={9:0}, d2={3:0}, s1={9:0}, s1={9:0}, s1->a=-1, s2={9:0}, s2={9:0}, s2->b=-2] [L29] return s1->a == s2->b; VAL [\result=0, d1={9:0}, d2={3:0}, s1={9:0}, s1={9:0}, s1->a=-1, s2={9:0}, s2={9:0}, s2->b=-2] [L37] RET, EXPR check(pd1, pd2) VAL [check(pd1, pd2)=0, d1={9:0}, d2={3:0}, pd1={9:0}, pd2={9:0}] [L37] COND TRUE !check(pd1, pd2) VAL [check(pd1, pd2)=0, d1={9:0}, d2={3:0}, pd1={9:0}, pd2={9:0}] [L44] reach_error() VAL [d1={9:0}, d2={3:0}, pd1={9:0}, pd2={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, 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=71occurred 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, 68 NumberOfCodeBlocks, 68 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...