./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark35_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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/loop-zilu/benchmark35_linear.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c943a364d2a5449039a4c16c790d2052154a1aec .................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 11:31:38,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 11:31:38,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 11:31:38,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 11:31:38,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 11:31:38,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 11:31:38,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 11:31:38,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 11:31:38,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 11:31:38,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 11:31:38,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 11:31:38,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 11:31:38,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 11:31:38,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 11:31:38,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 11:31:38,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 11:31:38,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 11:31:38,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 11:31:38,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 11:31:38,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 11:31:38,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 11:31:38,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 11:31:38,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 11:31:38,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 11:31:38,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 11:31:38,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 11:31:38,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 11:31:38,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 11:31:38,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 11:31:38,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 11:31:38,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 11:31:38,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 11:31:38,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 11:31:38,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 11:31:38,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 11:31:38,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 11:31:38,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 11:31:38,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 11:31:38,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 11:31:38,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 11:31:38,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 11:31:38,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-08-27 11:31:38,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 11:31:38,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 11:31:38,900 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 11:31:38,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 11:31:38,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 11:31:38,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 11:31:38,902 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 11:31:38,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 11:31:38,902 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 11:31:38,902 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 11:31:38,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 11:31:38,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 11:31:38,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 11:31:38,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 11:31:38,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 11:31:38,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 11:31:38,904 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 11:31:38,904 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 11:31:38,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 11:31:38,904 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 11:31:38,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 11:31:38,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 11:31:38,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 11:31:38,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 11:31:38,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 11:31:38,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 11:31:38,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 11:31:38,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 11:31:38,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 11:31:38,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 11:31:38,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 11:31:38,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 11:31:38,907 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c943a364d2a5449039a4c16c790d2052154a1aec [2021-08-27 11:31:39,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 11:31:39,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 11:31:39,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 11:31:39,158 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 11:31:39,158 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 11:31:39,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark35_linear.i [2021-08-27 11:31:39,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64cdcd410/770386370da847dd82f2f2156386c165/FLAGe1716ab36 [2021-08-27 11:31:39,518 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 11:31:39,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark35_linear.i [2021-08-27 11:31:39,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64cdcd410/770386370da847dd82f2f2156386c165/FLAGe1716ab36 [2021-08-27 11:31:39,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64cdcd410/770386370da847dd82f2f2156386c165 [2021-08-27 11:31:39,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 11:31:39,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 11:31:39,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 11:31:39,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 11:31:39,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 11:31:39,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:31:39" (1/1) ... [2021-08-27 11:31:39,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15945fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:39, skipping insertion in model container [2021-08-27 11:31:39,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:31:39" (1/1) ... [2021-08-27 11:31:39,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 11:31:39,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 11:31:40,092 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/loop-zilu/benchmark35_linear.i[868,881] [2021-08-27 11:31:40,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 11:31:40,100 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 11:31:40,109 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/loop-zilu/benchmark35_linear.i[868,881] [2021-08-27 11:31:40,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 11:31:40,126 INFO L208 MainTranslator]: Completed translation [2021-08-27 11:31:40,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:40 WrapperNode [2021-08-27 11:31:40,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 11:31:40,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 11:31:40,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 11:31:40,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 11:31:40,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:40" (1/1) ... [2021-08-27 11:31:40,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:40" (1/1) ... [2021-08-27 11:31:40,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 11:31:40,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 11:31:40,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 11:31:40,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 11:31:40,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:40" (1/1) ... [2021-08-27 11:31:40,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:40" (1/1) ... [2021-08-27 11:31:40,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:40" (1/1) ... [2021-08-27 11:31:40,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:40" (1/1) ... [2021-08-27 11:31:40,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:40" (1/1) ... [2021-08-27 11:31:40,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:40" (1/1) ... [2021-08-27 11:31:40,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:40" (1/1) ... [2021-08-27 11:31:40,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 11:31:40,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 11:31:40,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 11:31:40,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 11:31:40,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:40" (1/1) ... [2021-08-27 11:31:40,192 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 11:31:40,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:31:40,214 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) [2021-08-27 11:31:40,215 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 [2021-08-27 11:31:40,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 11:31:40,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 11:31:40,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 11:31:40,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 11:31:40,407 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 11:31:40,408 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-27 11:31:40,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:31:40 BoogieIcfgContainer [2021-08-27 11:31:40,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 11:31:40,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 11:31:40,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 11:31:40,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 11:31:40,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:31:39" (1/3) ... [2021-08-27 11:31:40,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad597d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:31:40, skipping insertion in model container [2021-08-27 11:31:40,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:40" (2/3) ... [2021-08-27 11:31:40,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad597d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:31:40, skipping insertion in model container [2021-08-27 11:31:40,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:31:40" (3/3) ... [2021-08-27 11:31:40,414 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark35_linear.i [2021-08-27 11:31:40,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 11:31:40,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-27 11:31:40,459 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 11:31:40,465 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 [2021-08-27 11:31:40,465 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-27 11:31:40,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 13 states have internal predecessors, (17), 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) [2021-08-27 11:31:40,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 11:31:40,479 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:31:40,479 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 11:31:40,480 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 11:31:40,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:31:40,484 INFO L82 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-08-27 11:31:40,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:31:40,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200333166] [2021-08-27 11:31:40,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:31:40,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:31:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:31:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:31:40,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:31:40,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200333166] [2021-08-27 11:31:40,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200333166] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:31:40,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:31:40,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 11:31:40,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233967756] [2021-08-27 11:31:40,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 11:31:40,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:31:40,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 11:31:40,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 11:31:40,652 INFO L87 Difference]: Start difference. First operand has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 13 states have internal predecessors, (17), 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, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-08-27 11:31:40,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:31:40,689 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-08-27 11:31:40,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 11:31:40,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-08-27 11:31:40,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:31:40,695 INFO L225 Difference]: With dead ends: 23 [2021-08-27 11:31:40,696 INFO L226 Difference]: Without dead ends: 7 [2021-08-27 11:31:40,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 11:31:40,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-08-27 11:31:40,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-08-27 11:31:40,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2021-08-27 11:31:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-08-27 11:31:40,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-08-27 11:31:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:31:40,719 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-08-27 11:31:40,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-08-27 11:31:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-08-27 11:31:40,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-27 11:31:40,719 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:31:40,720 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-27 11:31:40,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 11:31:40,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 11:31:40,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:31:40,721 INFO L82 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-08-27 11:31:40,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:31:40,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634146506] [2021-08-27 11:31:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:31:40,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:31:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:31:40,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:31:40,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:31:40,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634146506] [2021-08-27 11:31:40,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634146506] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:31:40,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:31:40,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 11:31:40,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102382314] [2021-08-27 11:31:40,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 11:31:40,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:31:40,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 11:31:40,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 11:31:40,746 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-08-27 11:31:40,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:31:40,758 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2021-08-27 11:31:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 11:31:40,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-08-27 11:31:40,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:31:40,759 INFO L225 Difference]: With dead ends: 7 [2021-08-27 11:31:40,759 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 11:31:40,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 11:31:40,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 11:31:40,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 11:31:40,762 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) [2021-08-27 11:31:40,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 11:31:40,762 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-08-27 11:31:40,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:31:40,762 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 11:31:40,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-08-27 11:31:40,763 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 11:31:40,763 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 11:31:40,764 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:31:40,765 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:31:40,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 11:31:40,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-27 11:31:40,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:31:40,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:31:40,780 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-08-27 11:31:40,780 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-27 11:31:40,780 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-08-27 11:31:40,780 INFO L857 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-08-27 11:31:40,781 INFO L857 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-08-27 11:31:40,781 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-08-27 11:31:40,781 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-27 11:31:40,782 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-08-27 11:31:40,784 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-27 11:31:40,784 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-27 11:31:40,785 INFO L860 garLoopResultBuilder]: At program point L26(lines 19 27) the Hoare annotation is: true [2021-08-27 11:31:40,785 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 24) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~x~0) [2021-08-27 11:31:40,786 INFO L857 garLoopResultBuilder]: For program point L22-3(lines 22 24) no Hoare annotation was computed. [2021-08-27 11:31:40,786 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-08-27 11:31:40,790 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 11:31:40,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:31:40 BoogieIcfgContainer [2021-08-27 11:31:40,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 11:31:40,798 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 11:31:40,799 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 11:31:40,799 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 11:31:40,799 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:31:40" (3/4) ... [2021-08-27 11:31:40,801 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 11:31:40,807 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-27 11:31:40,807 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-27 11:31:40,807 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 11:31:40,808 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 11:31:40,837 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 11:31:40,837 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 11:31:40,838 INFO L168 Benchmark]: Toolchain (without parser) took 870.69 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.3 MB in the beginning and 28.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2021-08-27 11:31:40,839 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory was 28.2 MB in the beginning and 28.2 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 11:31:40,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.13 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.1 MB in the beginning and 41.5 MB in the end (delta: -11.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2021-08-27 11:31:40,840 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.80 ms. Allocated memory is still 56.6 MB. Free memory was 41.3 MB in the beginning and 41.5 MB in the end (delta: -231.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 11:31:40,840 INFO L168 Benchmark]: Boogie Preprocessor took 21.13 ms. Allocated memory is still 56.6 MB. Free memory was 41.5 MB in the beginning and 40.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 11:31:40,840 INFO L168 Benchmark]: RCFGBuilder took 224.25 ms. Allocated memory is still 56.6 MB. Free memory was 40.5 MB in the beginning and 29.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 11:31:40,844 INFO L168 Benchmark]: TraceAbstraction took 388.24 ms. Allocated memory is still 56.6 MB. Free memory was 28.7 MB in the beginning and 30.9 MB in the end (delta: -2.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 11:31:40,844 INFO L168 Benchmark]: Witness Printer took 38.76 ms. Allocated memory is still 56.6 MB. Free memory was 30.9 MB in the beginning and 28.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 11:31:40,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory was 28.2 MB in the beginning and 28.2 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 159.13 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 30.1 MB in the beginning and 41.5 MB in the end (delta: -11.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.80 ms. Allocated memory is still 56.6 MB. Free memory was 41.3 MB in the beginning and 41.5 MB in the end (delta: -231.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.13 ms. Allocated memory is still 56.6 MB. Free memory was 41.5 MB in the beginning and 40.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 224.25 ms. Allocated memory is still 56.6 MB. Free memory was 40.5 MB in the beginning and 29.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 388.24 ms. Allocated memory is still 56.6 MB. Free memory was 28.7 MB in the beginning and 30.9 MB in the end (delta: -2.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 38.76 ms. Allocated memory is still 56.6 MB. Free memory was 30.9 MB in the beginning and 28.5 MB in the end (delta: 2.4 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: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 330.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 6.2ms, AutomataDifference: 81.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 13.5ms, InitialAbstractionConstructionTime: 7.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 4 SDslu, 6 SDs, 0 SdLazy, 12 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 5.3ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 4.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 10.8ms SsaConstructionTime, 25.6ms SatisfiabilityAnalysisTime, 81.5ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 <= x RESULT: Ultimate proved your program to be correct! [2021-08-27 11:31:40,875 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...