java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/SifaC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/string-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-2989841 [2019-08-10 02:22:18,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-10 02:22:18,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-10 02:22:18,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-10 02:22:18,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-10 02:22:18,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-10 02:22:18,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-10 02:22:18,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-10 02:22:18,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-10 02:22:18,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-10 02:22:18,343 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-10 02:22:18,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-10 02:22:18,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-10 02:22:18,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-10 02:22:18,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-10 02:22:18,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-10 02:22:18,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-10 02:22:18,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-10 02:22:18,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-10 02:22:18,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-10 02:22:18,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-10 02:22:18,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-10 02:22:18,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-10 02:22:18,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-10 02:22:18,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-10 02:22:18,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-10 02:22:18,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-10 02:22:18,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-10 02:22:18,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-10 02:22:18,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-10 02:22:18,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-10 02:22:18,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-10 02:22:18,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-10 02:22:18,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-10 02:22:18,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-10 02:22:18,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-10 02:22:18,382 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-08-10 02:22:18,397 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-10 02:22:18,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-10 02:22:18,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-10 02:22:18,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-10 02:22:18,399 INFO L138 SettingsManager]: * Use SBE=true [2019-08-10 02:22:18,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-10 02:22:18,399 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-10 02:22:18,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-10 02:22:18,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-10 02:22:18,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-10 02:22:18,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-10 02:22:18,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-10 02:22:18,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-10 02:22:18,401 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-10 02:22:18,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-10 02:22:18,401 INFO L138 SettingsManager]: * Use constant arrays=true [2019-08-10 02:22:18,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-10 02:22:18,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-10 02:22:18,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-10 02:22:18,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-08-10 02:22:18,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-10 02:22:18,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-10 02:22:18,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-10 02:22:18,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-10 02:22:18,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-10 02:22:18,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-08-10 02:22:18,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-10 02:22:18,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-10 02:22:18,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-10 02:22:18,444 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-10 02:22:18,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-10 02:22:18,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-10 02:22:18,463 INFO L271 PluginConnector]: Initializing CDTParser... [2019-08-10 02:22:18,463 INFO L275 PluginConnector]: CDTParser initialized [2019-08-10 02:22:18,464 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/string-2.i [2019-08-10 02:22:18,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28d980476/62284e2df5994654b6c7443518820249/FLAG37032d116 [2019-08-10 02:22:18,952 INFO L306 CDTParser]: Found 1 translation units. [2019-08-10 02:22:18,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/string-2.i [2019-08-10 02:22:18,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28d980476/62284e2df5994654b6c7443518820249/FLAG37032d116 [2019-08-10 02:22:19,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28d980476/62284e2df5994654b6c7443518820249 [2019-08-10 02:22:19,370 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-10 02:22:19,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-10 02:22:19,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-08-10 02:22:19,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-08-10 02:22:19,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-08-10 02:22:19,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.08 02:22:19" (1/1) ... [2019-08-10 02:22:19,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9351826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 02:22:19, skipping insertion in model container [2019-08-10 02:22:19,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.08 02:22:19" (1/1) ... [2019-08-10 02:22:19,386 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-08-10 02:22:19,401 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-08-10 02:22:19,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-10 02:22:19,577 INFO L188 MainTranslator]: Completed pre-run [2019-08-10 02:22:19,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-10 02:22:19,710 INFO L192 MainTranslator]: Completed translation [2019-08-10 02:22:19,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 02:22:19 WrapperNode [2019-08-10 02:22:19,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-08-10 02:22:19,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-10 02:22:19,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-10 02:22:19,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-10 02:22:19,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 02:22:19" (1/1) ... [2019-08-10 02:22:19,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 02:22:19" (1/1) ... [2019-08-10 02:22:19,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 02:22:19" (1/1) ... [2019-08-10 02:22:19,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 02:22:19" (1/1) ... [2019-08-10 02:22:19,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 02:22:19" (1/1) ... [2019-08-10 02:22:19,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 02:22:19" (1/1) ... [2019-08-10 02:22:19,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 02:22:19" (1/1) ... [2019-08-10 02:22:19,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-10 02:22:19,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-10 02:22:19,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-10 02:22:19,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-10 02:22:19,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 02:22:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-10 02:22:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-08-10 02:22:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-10 02:22:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-08-10 02:22:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-10 02:22:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-08-10 02:22:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-08-10 02:22:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-08-10 02:22:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-08-10 02:22:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-10 02:22:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-08-10 02:22:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-08-10 02:22:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-08-10 02:22:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-08-10 02:22:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-08-10 02:22:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-10 02:22:20,134 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-10 02:22:20,135 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-08-10 02:22:20,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.08 02:22:20 BoogieIcfgContainer [2019-08-10 02:22:20,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-10 02:22:20,137 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-10 02:22:20,137 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-10 02:22:20,138 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-10 02:22:20,139 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.08 02:22:20" (1/1) ... [2019-08-10 02:22:20,809 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2019-08-10 02:22:20,888 WARN L88 terpretationObserver]: Some locations of interest might be reachable, see reported results. [2019-08-10 02:22:20,897 INFO L132 PluginConnector]: ------------------------ END Symbolic Interpretation---------------------------- [2019-08-10 02:22:20,900 INFO L168 Benchmark]: Toolchain (without parser) took 1527.83 ms. Allocated memory was 140.0 MB in the beginning and 199.8 MB in the end (delta: 59.8 MB). Free memory was 87.9 MB in the beginning and 100.5 MB in the end (delta: -12.6 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. [2019-08-10 02:22:20,901 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 140.0 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-08-10 02:22:20,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.03 ms. Allocated memory was 140.0 MB in the beginning and 199.8 MB in the end (delta: 59.8 MB). Free memory was 87.5 MB in the beginning and 177.2 MB in the end (delta: -89.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-08-10 02:22:20,903 INFO L168 Benchmark]: Boogie Preprocessor took 42.24 ms. Allocated memory is still 199.8 MB. Free memory was 177.2 MB in the beginning and 175.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-08-10 02:22:20,904 INFO L168 Benchmark]: RCFGBuilder took 382.37 ms. Allocated memory is still 199.8 MB. Free memory was 175.4 MB in the beginning and 157.8 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2019-08-10 02:22:20,905 INFO L168 Benchmark]: Symbolic Interpretation took 760.50 ms. Allocated memory is still 199.8 MB. Free memory was 157.8 MB in the beginning and 100.5 MB in the end (delta: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2019-08-10 02:22:20,909 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.symbolicinterpretation: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Interpreter reached this location of interest. Location might be reachable. Predicate is 183#(and (or (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| 0)) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)). Possible FailurePath: * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 140.0 MB. Free memory was 106.1 MB in the beginning and 105.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 339.03 ms. Allocated memory was 140.0 MB in the beginning and 199.8 MB in the end (delta: 59.8 MB). Free memory was 87.5 MB in the beginning and 177.2 MB in the end (delta: -89.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.24 ms. Allocated memory is still 199.8 MB. Free memory was 177.2 MB in the beginning and 175.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 382.37 ms. Allocated memory is still 199.8 MB. Free memory was 175.4 MB in the beginning and 157.8 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * Symbolic Interpretation took 760.50 ms. Allocated memory is still 199.8 MB. Free memory was 157.8 MB in the beginning and 100.5 MB in the end (delta: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...