./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test28-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/test28-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6cb1d1a16584da5537d676558287a93525955a8e ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-05 01:00:15,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 01:00:15,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 01:00:15,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 01:00:15,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 01:00:15,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 01:00:15,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 01:00:15,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 01:00:15,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 01:00:15,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 01:00:15,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 01:00:15,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 01:00:15,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 01:00:15,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 01:00:15,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 01:00:15,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 01:00:15,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 01:00:15,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 01:00:15,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 01:00:15,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 01:00:15,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 01:00:15,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 01:00:15,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 01:00:15,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 01:00:15,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 01:00:15,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 01:00:15,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 01:00:15,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 01:00:15,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 01:00:15,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 01:00:15,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 01:00:15,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 01:00:15,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 01:00:15,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 01:00:15,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 01:00:15,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 01:00:15,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 01:00:15,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 01:00:15,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 01:00:15,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 01:00:15,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 01:00:15,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 01:00:15,536 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 01:00:15,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 01:00:15,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 01:00:15,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 01:00:15,537 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 01:00:15,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 01:00:15,538 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 01:00:15,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 01:00:15,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 01:00:15,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 01:00:15,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 01:00:15,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 01:00:15,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 01:00:15,539 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 01:00:15,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 01:00:15,539 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 01:00:15,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 01:00:15,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 01:00:15,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 01:00:15,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 01:00:15,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 01:00:15,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 01:00:15,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 01:00:15,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 01:00:15,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 01:00:15,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 01:00:15,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 01:00:15,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 01:00:15,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cb1d1a16584da5537d676558287a93525955a8e [2021-07-05 01:00:15,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 01:00:15,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 01:00:15,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 01:00:15,875 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 01:00:15,876 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 01:00:15,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test28-1.c [2021-07-05 01:00:15,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3602dd341/f54b092997534be18aa82951830ce5d9/FLAG354b63a0b [2021-07-05 01:00:16,377 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 01:00:16,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test28-1.c [2021-07-05 01:00:16,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3602dd341/f54b092997534be18aa82951830ce5d9/FLAG354b63a0b [2021-07-05 01:00:16,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3602dd341/f54b092997534be18aa82951830ce5d9 [2021-07-05 01:00:16,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 01:00:16,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 01:00:16,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 01:00:16,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 01:00:16,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 01:00:16,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 01:00:16" (1/1) ... [2021-07-05 01:00:16,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa20e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:16, skipping insertion in model container [2021-07-05 01:00:16,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 01:00:16" (1/1) ... [2021-07-05 01:00:16,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 01:00:16,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 01:00:16,850 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test28-1.c[576,589] [2021-07-05 01:00:16,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 01:00:16,875 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 01:00:16,887 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test28-1.c[576,589] [2021-07-05 01:00:16,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 01:00:16,944 INFO L208 MainTranslator]: Completed translation [2021-07-05 01:00:16,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:16 WrapperNode [2021-07-05 01:00:16,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 01:00:16,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 01:00:16,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 01:00:16,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 01:00:16,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:16" (1/1) ... [2021-07-05 01:00:16,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:16" (1/1) ... [2021-07-05 01:00:16,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 01:00:16,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 01:00:16,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 01:00:16,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 01:00:16,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:16" (1/1) ... [2021-07-05 01:00:16,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:16" (1/1) ... [2021-07-05 01:00:16,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:16" (1/1) ... [2021-07-05 01:00:16,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:16" (1/1) ... [2021-07-05 01:00:16,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:16" (1/1) ... [2021-07-05 01:00:16,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:16" (1/1) ... [2021-07-05 01:00:16,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:16" (1/1) ... [2021-07-05 01:00:17,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 01:00:17,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 01:00:17,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 01:00:17,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 01:00:17,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:16" (1/1) ... [2021-07-05 01:00:17,008 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 01:00:17,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 01:00:17,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-05 01:00:17,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-05 01:00:17,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-05 01:00:17,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 01:00:17,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 01:00:17,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-05 01:00:17,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 01:00:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 01:00:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-05 01:00:17,254 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 01:00:17,254 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-07-05 01:00:17,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 01:00:17 BoogieIcfgContainer [2021-07-05 01:00:17,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 01:00:17,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 01:00:17,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 01:00:17,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 01:00:17,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 01:00:16" (1/3) ... [2021-07-05 01:00:17,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dea4f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 01:00:17, skipping insertion in model container [2021-07-05 01:00:17,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:16" (2/3) ... [2021-07-05 01:00:17,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dea4f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 01:00:17, skipping insertion in model container [2021-07-05 01:00:17,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 01:00:17" (3/3) ... [2021-07-05 01:00:17,273 INFO L111 eAbstractionObserver]: Analyzing ICFG test28-1.c [2021-07-05 01:00:17,277 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 01:00:17,278 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-05 01:00:17,314 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 01:00:17,319 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 01:00:17,319 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 01:00:17,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 01:00:17,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-07-05 01:00:17,347 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 01:00:17,347 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 01:00:17,347 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 01:00:17,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 01:00:17,351 INFO L82 PathProgramCache]: Analyzing trace with hash -594068692, now seen corresponding path program 1 times [2021-07-05 01:00:17,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 01:00:17,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813471644] [2021-07-05 01:00:17,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 01:00:17,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 01:00:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 01:00:17,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:17,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:17,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:17,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 01:00:17,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:17,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 01:00:17,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:17,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 01:00:17,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:17,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 01:00:17,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 01:00:17,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813471644] [2021-07-05 01:00:17,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813471644] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 01:00:17,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 01:00:17,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-05 01:00:17,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098007602] [2021-07-05 01:00:17,657 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-05 01:00:17,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 01:00:17,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-05 01:00:17,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-05 01:00:17,671 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 01:00:17,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 01:00:17,730 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2021-07-05 01:00:17,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-05 01:00:17,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-07-05 01:00:17,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 01:00:17,738 INFO L225 Difference]: With dead ends: 28 [2021-07-05 01:00:17,738 INFO L226 Difference]: Without dead ends: 17 [2021-07-05 01:00:17,740 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 41.7ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-05 01:00:17,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-07-05 01:00:17,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-07-05 01:00:17,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 01:00:17,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-07-05 01:00:17,759 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2021-07-05 01:00:17,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 01:00:17,759 INFO L442 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-07-05 01:00:17,759 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 01:00:17,760 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-07-05 01:00:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-07-05 01:00:17,760 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 01:00:17,760 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 01:00:17,761 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 01:00:17,761 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 01:00:17,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 01:00:17,764 INFO L82 PathProgramCache]: Analyzing trace with hash -592221650, now seen corresponding path program 1 times [2021-07-05 01:00:17,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 01:00:17,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684148747] [2021-07-05 01:00:17,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 01:00:17,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 01:00:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 01:00:17,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:17,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:17,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:17,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 01:00:17,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:17,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 01:00:17,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:17,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 01:00:17,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:17,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 01:00:17,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:17,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-05 01:00:17,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:17,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 01:00:17,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 01:00:17,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684148747] [2021-07-05 01:00:17,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684148747] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 01:00:17,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 01:00:17,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-05 01:00:17,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634708950] [2021-07-05 01:00:17,846 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-05 01:00:17,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 01:00:17,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-05 01:00:17,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-05 01:00:17,849 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 01:00:17,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 01:00:17,935 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-07-05 01:00:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-05 01:00:17,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-07-05 01:00:17,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 01:00:17,936 INFO L225 Difference]: With dead ends: 19 [2021-07-05 01:00:17,936 INFO L226 Difference]: Without dead ends: 10 [2021-07-05 01:00:17,938 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 66.7ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-07-05 01:00:17,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-07-05 01:00:17,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-07-05 01:00:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 01:00:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2021-07-05 01:00:17,944 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2021-07-05 01:00:17,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 01:00:17,945 INFO L442 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2021-07-05 01:00:17,945 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 01:00:17,945 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2021-07-05 01:00:17,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-07-05 01:00:17,951 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 01:00:17,951 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 01:00:17,951 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-05 01:00:17,951 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 01:00:17,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 01:00:17,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1180938670, now seen corresponding path program 1 times [2021-07-05 01:00:17,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 01:00:17,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815737336] [2021-07-05 01:00:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 01:00:17,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 01:00:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 01:00:17,976 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 01:00:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 01:00:17,992 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 01:00:18,004 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-05 01:00:18,004 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-05 01:00:18,006 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-05 01:00:18,006 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 01:00:18,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 01:00:18 BoogieIcfgContainer [2021-07-05 01:00:18,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 01:00:18,023 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 01:00:18,023 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 01:00:18,023 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 01:00:18,024 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 01:00:17" (3/4) ... [2021-07-05 01:00:18,025 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-05 01:00:18,045 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-05 01:00:18,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 01:00:18,046 INFO L168 Benchmark]: Toolchain (without parser) took 1304.13 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 49.4 MB in the beginning and 46.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:18,047 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 48.2 MB. Free memory was 29.7 MB in the beginning and 29.6 MB in the end (delta: 33.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 01:00:18,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.22 ms. Allocated memory is still 65.0 MB. Free memory was 49.2 MB in the beginning and 48.8 MB in the end (delta: 378.5 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:18,047 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.96 ms. Allocated memory is still 65.0 MB. Free memory was 48.6 MB in the beginning and 47.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 01:00:18,048 INFO L168 Benchmark]: Boogie Preprocessor took 31.60 ms. Allocated memory is still 65.0 MB. Free memory was 47.4 MB in the beginning and 46.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:18,048 INFO L168 Benchmark]: RCFGBuilder took 252.75 ms. Allocated memory is still 65.0 MB. Free memory was 46.3 MB in the beginning and 33.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:18,048 INFO L168 Benchmark]: TraceAbstraction took 766.53 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 32.9 MB in the beginning and 48.8 MB in the end (delta: -15.9 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:18,049 INFO L168 Benchmark]: Witness Printer took 22.31 ms. Allocated memory is still 81.8 MB. Free memory was 48.8 MB in the beginning and 46.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:18,050 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 48.2 MB. Free memory was 29.7 MB in the beginning and 29.6 MB in the end (delta: 33.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 202.22 ms. Allocated memory is still 65.0 MB. Free memory was 49.2 MB in the beginning and 48.8 MB in the end (delta: 378.5 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.96 ms. Allocated memory is still 65.0 MB. Free memory was 48.6 MB in the beginning and 47.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.60 ms. Allocated memory is still 65.0 MB. Free memory was 47.4 MB in the beginning and 46.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 252.75 ms. Allocated memory is still 65.0 MB. Free memory was 46.3 MB in the beginning and 33.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 766.53 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 32.9 MB in the beginning and 48.8 MB in the end (delta: -15.9 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Witness Printer took 22.31 ms. Allocated memory is still 81.8 MB. Free memory was 48.8 MB in the beginning and 46.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 28]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] struct dummy d1, d2; [L15] int n = __VERIFIER_nondet_int(); [L16] EXPR n ? &d1 : &d2 [L16] struct dummy *pd = n ? &d1 : &d2; [L17] COND TRUE pd == &d2 [L18] pd->a = 0 [L22] pd == &d2 && d2.b != 0 [L22] EXPR d2.b [L22] pd == &d2 && d2.b != 0 [L22] COND TRUE pd == &d2 && d2.b != 0 [L28] reach_error() - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 695.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 27.9ms, AutomataDifference: 173.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 45 SDslu, 26 SDs, 0 SdLazy, 60 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 108.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.5ms SsaConstructionTime, 72.1ms SatisfiabilityAnalysisTime, 144.2ms InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2021-07-05 01:00:18,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...