java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AbstractInterpretationC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loops/string-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:47:17,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:47:17,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:47:17,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:47:17,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:47:17,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:47:17,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:47:17,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:47:17,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:47:17,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:47:17,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:47:17,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:47:17,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:47:17,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:47:17,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:47:17,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:47:17,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:47:17,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:47:17,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:47:17,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:47:17,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:47:17,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:47:17,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:47:17,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:47:17,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:47:17,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:47:17,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:47:17,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:47:17,095 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:47:17,111 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:47:17,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:47:17,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:47:17,112 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:47:17,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:47:17,113 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:47:17,114 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:47:17,114 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:47:17,114 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:47:17,114 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:47:17,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:47:17,115 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:47:17,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:47:17,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:47:17,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:47:17,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:47:17,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:47:17,116 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:47:17,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:47:17,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:47:17,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:47:17,118 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:47:17,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:47:17,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:47:17,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:47:17,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:47:17,119 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:47:17,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:47:17,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:47:17,120 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:47:17,171 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:47:17,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:47:17,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:47:17,189 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:47:17,189 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:47:17,190 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/string-2.i [2019-09-20 13:47:17,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5bc525a6/206e793a81a643578f99741eb23eb1de/FLAG9103ce430 [2019-09-20 13:47:17,740 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:47:17,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/string-2.i [2019-09-20 13:47:17,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5bc525a6/206e793a81a643578f99741eb23eb1de/FLAG9103ce430 [2019-09-20 13:47:18,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5bc525a6/206e793a81a643578f99741eb23eb1de [2019-09-20 13:47:18,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:47:18,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:47:18,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:47:18,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:47:18,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:47:18,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:47:18" (1/1) ... [2019-09-20 13:47:18,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47db1c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:18, skipping insertion in model container [2019-09-20 13:47:18,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:47:18" (1/1) ... [2019-09-20 13:47:18,138 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:47:18,157 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:47:18,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:47:18,375 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:47:18,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:47:18,529 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:47:18,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:18 WrapperNode [2019-09-20 13:47:18,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:47:18,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:47:18,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:47:18,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:47:18,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:18" (1/1) ... [2019-09-20 13:47:18,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:18" (1/1) ... [2019-09-20 13:47:18,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:18" (1/1) ... [2019-09-20 13:47:18,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:18" (1/1) ... [2019-09-20 13:47:18,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:18" (1/1) ... [2019-09-20 13:47:18,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:18" (1/1) ... [2019-09-20 13:47:18,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:18" (1/1) ... [2019-09-20 13:47:18,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:47:18,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:47:18,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:47:18,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:47:18,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:18" (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 [2019-09-20 13:47:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:47:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:47:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:47:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:47:18,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:47:18,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 13:47:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:47:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-20 13:47:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:47:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:47:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:47:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:47:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:47:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:47:18,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:47:18,965 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:47:18,965 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:47:18,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:47:18 BoogieIcfgContainer [2019-09-20 13:47:18,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:47:18,967 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-09-20 13:47:18,968 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-09-20 13:47:18,968 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-09-20 13:47:18,969 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:47:18" (1/1) ... [2019-09-20 13:47:19,020 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:47:19,085 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:47:19,090 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 36 variables. [2019-09-20 13:47:19,091 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-09-20 13:47:19,094 INFO L168 Benchmark]: Toolchain (without parser) took 974.67 ms. Allocated memory was 134.2 MB in the beginning and 200.3 MB in the end (delta: 66.1 MB). Free memory was 86.3 MB in the beginning and 152.3 MB in the end (delta: -65.9 MB). Peak memory consumption was 121.4 kB. Max. memory is 7.1 GB. [2019-09-20 13:47:19,095 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 134.2 MB. Free memory was 104.7 MB in the beginning and 104.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:47:19,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.83 ms. Allocated memory was 134.2 MB in the beginning and 200.3 MB in the end (delta: 66.1 MB). Free memory was 86.1 MB in the beginning and 178.7 MB in the end (delta: -92.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:47:19,098 INFO L168 Benchmark]: Boogie Preprocessor took 46.07 ms. Allocated memory is still 200.3 MB. Free memory was 178.1 MB in the beginning and 175.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:47:19,099 INFO L168 Benchmark]: RCFGBuilder took 390.08 ms. Allocated memory is still 200.3 MB. Free memory was 175.8 MB in the beginning and 157.4 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:47:19,101 INFO L168 Benchmark]: Abstract Interpretation took 123.38 ms. Allocated memory is still 200.3 MB. Free memory was 157.4 MB in the beginning and 152.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:47:19,106 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 134.2 MB. Free memory was 104.7 MB in the beginning and 104.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 408.83 ms. Allocated memory was 134.2 MB in the beginning and 200.3 MB in the end (delta: 66.1 MB). Free memory was 86.1 MB in the beginning and 178.7 MB in the end (delta: -92.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.07 ms. Allocated memory is still 200.3 MB. Free memory was 178.1 MB in the beginning and 175.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 390.08 ms. Allocated memory is still 200.3 MB. Free memory was 175.8 MB in the beginning and 157.4 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 123.38 ms. Allocated memory is still 200.3 MB. Free memory was 157.4 MB in the beginning and 152.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location RESULT: Ultimate proved your program to be correct! Received shutdown request...