./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test17.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/test17.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 d1ef2f6f40d237ab0efc8307710a86954fdb7be5 .................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 02:10:15,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 02:10:15,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 02:10:15,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 02:10:15,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 02:10:15,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 02:10:15,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 02:10:15,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 02:10:15,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 02:10:15,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 02:10:15,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 02:10:15,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 02:10:15,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 02:10:15,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 02:10:15,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 02:10:15,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 02:10:15,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 02:10:15,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 02:10:15,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 02:10:15,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 02:10:15,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 02:10:15,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 02:10:15,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 02:10:15,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 02:10:15,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 02:10:15,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 02:10:15,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 02:10:15,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 02:10:15,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 02:10:15,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 02:10:15,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 02:10:15,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 02:10:15,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 02:10:15,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 02:10:15,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 02:10:15,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 02:10:15,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 02:10:15,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 02:10:15,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 02:10:15,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 02:10:15,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 02:10:15,998 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 02:10:16,034 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 02:10:16,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 02:10:16,035 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 02:10:16,035 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 02:10:16,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 02:10:16,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 02:10:16,038 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 02:10:16,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 02:10:16,038 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 02:10:16,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 02:10:16,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 02:10:16,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 02:10:16,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 02:10:16,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 02:10:16,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 02:10:16,040 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 02:10:16,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 02:10:16,040 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 02:10:16,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 02:10:16,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 02:10:16,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 02:10:16,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 02:10:16,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:10:16,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 02:10:16,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 02:10:16,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 02:10:16,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 02:10:16,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 02:10:16,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 02:10:16,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 02:10:16,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1ef2f6f40d237ab0efc8307710a86954fdb7be5 [2021-08-26 02:10:16,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 02:10:16,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 02:10:16,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 02:10:16,395 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 02:10:16,396 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 02:10:16,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test17.c [2021-08-26 02:10:16,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a0ddbde5/ab6b4575513d4203b70be1cc15a5b13b/FLAGe4f4f8f8d [2021-08-26 02:10:16,882 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 02:10:16,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test17.c [2021-08-26 02:10:16,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a0ddbde5/ab6b4575513d4203b70be1cc15a5b13b/FLAGe4f4f8f8d [2021-08-26 02:10:17,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a0ddbde5/ab6b4575513d4203b70be1cc15a5b13b [2021-08-26 02:10:17,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 02:10:17,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 02:10:17,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 02:10:17,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 02:10:17,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 02:10:17,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:10:17" (1/1) ... [2021-08-26 02:10:17,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c6773ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:17, skipping insertion in model container [2021-08-26 02:10:17,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:10:17" (1/1) ... [2021-08-26 02:10:17,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 02:10:17,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 02:10:17,445 WARN L228 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/test17.c[377,390] [2021-08-26 02:10:17,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:10:17,463 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 02:10:17,473 WARN L228 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/test17.c[377,390] [2021-08-26 02:10:17,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 02:10:17,488 INFO L208 MainTranslator]: Completed translation [2021-08-26 02:10:17,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:17 WrapperNode [2021-08-26 02:10:17,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 02:10:17,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 02:10:17,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 02:10:17,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 02:10:17,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:17" (1/1) ... [2021-08-26 02:10:17,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:17" (1/1) ... [2021-08-26 02:10:17,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 02:10:17,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 02:10:17,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 02:10:17,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 02:10:17,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:17" (1/1) ... [2021-08-26 02:10:17,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:17" (1/1) ... [2021-08-26 02:10:17,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:17" (1/1) ... [2021-08-26 02:10:17,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:17" (1/1) ... [2021-08-26 02:10:17,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:17" (1/1) ... [2021-08-26 02:10:17,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:17" (1/1) ... [2021-08-26 02:10:17,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:17" (1/1) ... [2021-08-26 02:10:17,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 02:10:17,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 02:10:17,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 02:10:17,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 02:10:17,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:17" (1/1) ... [2021-08-26 02:10:17,566 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 02:10:17,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 02:10:17,594 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) [2021-08-26 02:10:17,617 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 [2021-08-26 02:10:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 02:10:17,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 02:10:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 02:10:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 02:10:17,857 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 02:10:17,858 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-26 02:10:17,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:10:17 BoogieIcfgContainer [2021-08-26 02:10:17,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 02:10:17,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 02:10:17,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 02:10:17,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 02:10:17,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:10:17" (1/3) ... [2021-08-26 02:10:17,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75702c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:10:17, skipping insertion in model container [2021-08-26 02:10:17,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:10:17" (2/3) ... [2021-08-26 02:10:17,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75702c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:10:17, skipping insertion in model container [2021-08-26 02:10:17,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:10:17" (3/3) ... [2021-08-26 02:10:17,867 INFO L111 eAbstractionObserver]: Analyzing ICFG test17.c [2021-08-26 02:10:17,872 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 02:10:17,872 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 02:10:17,917 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 02:10:17,927 INFO L339 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, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 02:10:17,927 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 02:10:17,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 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) [2021-08-26 02:10:17,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-26 02:10:17,949 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 02:10:17,949 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-26 02:10:17,950 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 02:10:17,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 02:10:17,956 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2021-08-26 02:10:17,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 02:10:17,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947708265] [2021-08-26 02:10:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 02:10:17,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 02:10:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 02:10:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 02:10:18,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 02:10:18,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947708265] [2021-08-26 02:10:18,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947708265] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 02:10:18,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 02:10:18,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 02:10:18,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753742693] [2021-08-26 02:10:18,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 02:10:18,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 02:10:18,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 02:10:18,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:10:18,195 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-08-26 02:10:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 02:10:18,218 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-08-26 02:10:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 02:10:18,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-08-26 02:10:18,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 02:10:18,242 INFO L225 Difference]: With dead ends: 13 [2021-08-26 02:10:18,243 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 02:10:18,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 02:10:18,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 02:10:18,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 02:10:18,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-26 02:10:18,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 02:10:18,268 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-08-26 02:10:18,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 02:10:18,268 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 02:10:18,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-08-26 02:10:18,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 02:10:18,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 02:10:18,271 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 02:10:18,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 02:10:18,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 02:10:18,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 02:10:18,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 02:10:18,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 02:10:18,302 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 02:10:18,303 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 02:10:18,303 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 02:10:18,303 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 02:10:18,303 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-08-26 02:10:18,304 INFO L853 garLoopResultBuilder]: At program point L20(lines 18 21) the Hoare annotation is: (and (= ULTIMATE.start_equal_~a.base ULTIMATE.start_equal_~b.base) (= ULTIMATE.start_equal_~b.offset ULTIMATE.start_equal_~a.offset)) [2021-08-26 02:10:18,304 INFO L853 garLoopResultBuilder]: At program point L13(lines 6 14) the Hoare annotation is: (and (= ULTIMATE.start_equal_~a.base ULTIMATE.start_equal_~b.base) (= ULTIMATE.start_equal_~b.offset ULTIMATE.start_equal_~a.offset)) [2021-08-26 02:10:18,304 INFO L853 garLoopResultBuilder]: At program point L8(lines 6 14) the Hoare annotation is: false [2021-08-26 02:10:18,304 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-08-26 02:10:18,308 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 02:10:18,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:10:18 BoogieIcfgContainer [2021-08-26 02:10:18,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 02:10:18,325 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 02:10:18,325 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 02:10:18,325 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 02:10:18,326 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:10:17" (3/4) ... [2021-08-26 02:10:18,328 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 02:10:18,335 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-26 02:10:18,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 02:10:18,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 02:10:18,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 02:10:18,359 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 02:10:18,359 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 02:10:18,361 INFO L168 Benchmark]: Toolchain (without parser) took 1033.29 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 29.4 MB in the beginning and 47.6 MB in the end (delta: -18.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:10:18,361 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 52.4 MB. Free memory was 34.4 MB in the beginning and 34.4 MB in the end (delta: 41.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:10:18,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.55 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 29.2 MB in the beginning and 51.2 MB in the end (delta: -22.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-08-26 02:10:18,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.75 ms. Allocated memory is still 67.1 MB. Free memory was 51.0 MB in the beginning and 49.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:10:18,363 INFO L168 Benchmark]: Boogie Preprocessor took 20.82 ms. Allocated memory is still 67.1 MB. Free memory was 49.7 MB in the beginning and 48.9 MB in the end (delta: 846.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 02:10:18,363 INFO L168 Benchmark]: RCFGBuilder took 300.80 ms. Allocated memory is still 67.1 MB. Free memory was 48.7 MB in the beginning and 37.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 02:10:18,364 INFO L168 Benchmark]: TraceAbstraction took 463.41 ms. Allocated memory is still 67.1 MB. Free memory was 37.2 MB in the beginning and 49.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-08-26 02:10:18,364 INFO L168 Benchmark]: Witness Printer took 34.45 ms. Allocated memory is still 67.1 MB. Free memory was 49.6 MB in the beginning and 47.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 02:10:18,367 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 52.4 MB. Free memory was 34.4 MB in the beginning and 34.4 MB in the end (delta: 41.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 160.55 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 29.2 MB in the beginning and 51.2 MB in the end (delta: -22.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.75 ms. Allocated memory is still 67.1 MB. Free memory was 51.0 MB in the beginning and 49.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.82 ms. Allocated memory is still 67.1 MB. Free memory was 49.7 MB in the beginning and 48.9 MB in the end (delta: 846.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 300.80 ms. Allocated memory is still 67.1 MB. Free memory was 48.7 MB in the beginning and 37.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 463.41 ms. Allocated memory is still 67.1 MB. Free memory was 37.2 MB in the beginning and 49.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * Witness Printer took 34.45 ms. Allocated memory is still 67.1 MB. Free memory was 49.6 MB in the beginning and 47.6 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 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 392.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 13.3ms, AutomataDifference: 59.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 30.6ms, InitialAbstractionConstructionTime: 8.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 8.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 5 NumberOfFragments, 15 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 5.7ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 19.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 9.7ms SsaConstructionTime, 32.6ms SatisfiabilityAnalysisTime, 101.6ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: a == b && b == a - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: a == b && b == a - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-08-26 02:10:18,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...