./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-industry-pattern/mod3.c.v+lhb-reducer.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/loop-industry-pattern/mod3.c.v+lhb-reducer.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 6774d8276995139fa82226959a0a91ee830b52b2 ............................................................................................................................................................................................................................................................................................................................................................................................... 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 03:51:38,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 03:51:38,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 03:51:38,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 03:51:38,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 03:51:38,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 03:51:38,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 03:51:38,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 03:51:38,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 03:51:38,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 03:51:38,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 03:51:38,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 03:51:38,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 03:51:38,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 03:51:38,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 03:51:38,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 03:51:38,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 03:51:38,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 03:51:38,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 03:51:38,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 03:51:38,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 03:51:38,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 03:51:38,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 03:51:38,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 03:51:38,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 03:51:38,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 03:51:38,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 03:51:38,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 03:51:38,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 03:51:38,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 03:51:38,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 03:51:38,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 03:51:38,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 03:51:38,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 03:51:38,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 03:51:38,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 03:51:38,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 03:51:38,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 03:51:38,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 03:51:38,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 03:51:38,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 03:51:38,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 03:51:38,686 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 03:51:38,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 03:51:38,687 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 03:51:38,687 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 03:51:38,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 03:51:38,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 03:51:38,689 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 03:51:38,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 03:51:38,689 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 03:51:38,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 03:51:38,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 03:51:38,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 03:51:38,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 03:51:38,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 03:51:38,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 03:51:38,691 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 03:51:38,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 03:51:38,691 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 03:51:38,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 03:51:38,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 03:51:38,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 03:51:38,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 03:51:38,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:51:38,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 03:51:38,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 03:51:38,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 03:51:38,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 03:51:38,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 03:51:38,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 03:51:38,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 03:51:38,694 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6774d8276995139fa82226959a0a91ee830b52b2 [2021-08-26 03:51:39,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 03:51:39,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 03:51:39,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 03:51:39,081 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 03:51:39,081 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 03:51:39,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-industry-pattern/mod3.c.v+lhb-reducer.c [2021-08-26 03:51:39,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da2913cfc/b2936562bcd1433183c2105e182d6e5e/FLAG00ad0aade [2021-08-26 03:51:39,602 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 03:51:39,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/mod3.c.v+lhb-reducer.c [2021-08-26 03:51:39,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da2913cfc/b2936562bcd1433183c2105e182d6e5e/FLAG00ad0aade [2021-08-26 03:51:39,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da2913cfc/b2936562bcd1433183c2105e182d6e5e [2021-08-26 03:51:39,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 03:51:39,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 03:51:39,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 03:51:39,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 03:51:40,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 03:51:40,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:51:39" (1/1) ... [2021-08-26 03:51:40,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d999f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:40, skipping insertion in model container [2021-08-26 03:51:40,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:51:39" (1/1) ... [2021-08-26 03:51:40,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 03:51:40,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 03:51:40,216 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-industry-pattern/mod3.c.v+lhb-reducer.c[2239,2252] [2021-08-26 03:51:40,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:51:40,248 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 03:51:40,285 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-industry-pattern/mod3.c.v+lhb-reducer.c[2239,2252] [2021-08-26 03:51:40,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:51:40,303 INFO L208 MainTranslator]: Completed translation [2021-08-26 03:51:40,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:40 WrapperNode [2021-08-26 03:51:40,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 03:51:40,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 03:51:40,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 03:51:40,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 03:51:40,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:40" (1/1) ... [2021-08-26 03:51:40,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:40" (1/1) ... [2021-08-26 03:51:40,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 03:51:40,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 03:51:40,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 03:51:40,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 03:51:40,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:40" (1/1) ... [2021-08-26 03:51:40,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:40" (1/1) ... [2021-08-26 03:51:40,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:40" (1/1) ... [2021-08-26 03:51:40,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:40" (1/1) ... [2021-08-26 03:51:40,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:40" (1/1) ... [2021-08-26 03:51:40,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:40" (1/1) ... [2021-08-26 03:51:40,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:40" (1/1) ... [2021-08-26 03:51:40,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 03:51:40,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 03:51:40,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 03:51:40,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 03:51:40,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:40" (1/1) ... [2021-08-26 03:51:40,397 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:51:40,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:51:40,422 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 03:51:40,449 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 03:51:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 03:51:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 03:51:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 03:51:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 03:51:49,442 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 03:51:49,443 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-26 03:51:49,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:51:49 BoogieIcfgContainer [2021-08-26 03:51:49,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 03:51:49,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 03:51:49,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 03:51:49,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 03:51:49,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:51:39" (1/3) ... [2021-08-26 03:51:49,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ada2598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:51:49, skipping insertion in model container [2021-08-26 03:51:49,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:40" (2/3) ... [2021-08-26 03:51:49,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ada2598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:51:49, skipping insertion in model container [2021-08-26 03:51:49,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:51:49" (3/3) ... [2021-08-26 03:51:49,451 INFO L111 eAbstractionObserver]: Analyzing ICFG mod3.c.v+lhb-reducer.c [2021-08-26 03:51:49,456 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 03:51:49,456 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 03:51:49,505 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 03:51:49,511 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 03:51:49,511 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 03:51:49,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 22 states have internal predecessors, (32), 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 03:51:49,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 03:51:49,527 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:51:49,528 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:51:49,528 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:51:49,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:51:49,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1053789450, now seen corresponding path program 1 times [2021-08-26 03:51:49,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:51:49,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271152748] [2021-08-26 03:51:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:51:49,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:51:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:51:49,899 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 03:51:49,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:51:49,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271152748] [2021-08-26 03:51:49,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271152748] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:51:49,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:51:49,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 03:51:49,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356794844] [2021-08-26 03:51:49,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 03:51:49,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:51:49,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 03:51:49,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:51:49,925 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 22 states have internal predecessors, (32), 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 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 03:52:07,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:52:07,427 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2021-08-26 03:52:07,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 03:52:07,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-08-26 03:52:07,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:52:07,435 INFO L225 Difference]: With dead ends: 61 [2021-08-26 03:52:07,436 INFO L226 Difference]: Without dead ends: 26 [2021-08-26 03:52:07,438 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:52:07,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-08-26 03:52:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-08-26 03:52:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 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 03:52:07,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-08-26 03:52:07,464 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 11 [2021-08-26 03:52:07,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:52:07,464 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-08-26 03:52:07,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 03:52:07,465 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-08-26 03:52:07,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 03:52:07,465 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:52:07,466 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:52:07,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 03:52:07,466 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:52:07,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:52:07,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1942403648, now seen corresponding path program 1 times [2021-08-26 03:52:07,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:52:07,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457189260] [2021-08-26 03:52:07,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:52:07,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:52:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:52:07,717 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 03:52:07,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:52:07,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457189260] [2021-08-26 03:52:07,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457189260] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:52:07,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:52:07,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 03:52:07,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26797418] [2021-08-26 03:52:07,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 03:52:07,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:52:07,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 03:52:07,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:52:07,722 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 03:52:20,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:52:20,823 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2021-08-26 03:52:20,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 03:52:20,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-08-26 03:52:20,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:52:20,824 INFO L225 Difference]: With dead ends: 54 [2021-08-26 03:52:20,824 INFO L226 Difference]: Without dead ends: 29 [2021-08-26 03:52:20,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:52:20,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-26 03:52:20,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-26 03:52:20,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 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 03:52:20,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-08-26 03:52:20,830 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 12 [2021-08-26 03:52:20,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:52:20,830 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-08-26 03:52:20,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 03:52:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-08-26 03:52:20,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 03:52:20,831 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:52:20,831 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:52:20,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 03:52:20,832 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:52:20,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:52:20,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1208558895, now seen corresponding path program 1 times [2021-08-26 03:52:20,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:52:20,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892529489] [2021-08-26 03:52:20,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:52:20,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:52:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:52:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:52:21,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:52:21,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892529489] [2021-08-26 03:52:21,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892529489] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:52:21,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:52:21,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 03:52:21,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581337841] [2021-08-26 03:52:21,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 03:52:21,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:52:21,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 03:52:21,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:52:21,039 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2021-08-26 03:52:29,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:52:29,837 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2021-08-26 03:52:29,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 03:52:29,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) Word has length 17 [2021-08-26 03:52:29,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:52:29,839 INFO L225 Difference]: With dead ends: 55 [2021-08-26 03:52:29,839 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 03:52:29,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:52:29,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 03:52:29,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 03:52:29,840 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 03:52:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 03:52:29,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-08-26 03:52:29,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:52:29,840 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 03:52:29,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2021-08-26 03:52:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 03:52:29,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 03:52:29,843 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 03:52:29,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 03:52:29,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 03:52:29,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:52:29,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:52:29,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:52:29,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:52:29,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:52:29,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:52:29,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:52:29,880 INFO L857 garLoopResultBuilder]: For program point L97(lines 97 106) no Hoare annotation was computed. [2021-08-26 03:52:29,881 INFO L853 garLoopResultBuilder]: At program point L122(lines 25 145) the Hoare annotation is: (<= ULTIMATE.start_main_~main__x~0 (let ((.cse0 (div ULTIMATE.start_main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ ULTIMATE.start_main_~main__x~0 .cse2) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ ULTIMATE.start_main_~main__x~0 (* .cse1 (- 3)) .cse2) 4294967296))))))) [2021-08-26 03:52:29,881 INFO L853 garLoopResultBuilder]: At program point L56(lines 26 114) the Hoare annotation is: (<= ULTIMATE.start_main_~main__x~0 (let ((.cse0 (div ULTIMATE.start_main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ ULTIMATE.start_main_~main__x~0 .cse2) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ ULTIMATE.start_main_~main__x~0 (* .cse1 (- 3)) .cse2) 4294967296))))))) [2021-08-26 03:52:29,881 INFO L857 garLoopResultBuilder]: For program point L23(lines 23 150) no Hoare annotation was computed. [2021-08-26 03:52:29,881 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 85) no Hoare annotation was computed. [2021-08-26 03:52:29,882 INFO L853 garLoopResultBuilder]: At program point L44(lines 26 114) the Hoare annotation is: (<= ULTIMATE.start_main_~main__x~0 (let ((.cse0 (div ULTIMATE.start_main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ ULTIMATE.start_main_~main__x~0 .cse2) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ ULTIMATE.start_main_~main__x~0 (* .cse1 (- 3)) .cse2) 4294967296))))))) [2021-08-26 03:52:29,882 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 03:52:29,882 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 03:52:29,882 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 03:52:29,882 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 112) no Hoare annotation was computed. [2021-08-26 03:52:29,882 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 99) no Hoare annotation was computed. [2021-08-26 03:52:29,883 INFO L857 garLoopResultBuilder]: For program point L37(lines 37 113) no Hoare annotation was computed. [2021-08-26 03:52:29,883 INFO L857 garLoopResultBuilder]: For program point L99(line 99) no Hoare annotation was computed. [2021-08-26 03:52:29,883 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 03:52:29,883 INFO L857 garLoopResultBuilder]: For program point L128(lines 128 143) no Hoare annotation was computed. [2021-08-26 03:52:29,883 INFO L857 garLoopResultBuilder]: For program point L62(lines 62 84) no Hoare annotation was computed. [2021-08-26 03:52:29,883 INFO L857 garLoopResultBuilder]: For program point L25(lines 25 145) no Hoare annotation was computed. [2021-08-26 03:52:29,884 INFO L860 garLoopResultBuilder]: At program point L149(lines 16 151) the Hoare annotation is: true [2021-08-26 03:52:29,884 INFO L860 garLoopResultBuilder]: At program point L83(lines 17 151) the Hoare annotation is: true [2021-08-26 03:52:29,884 INFO L857 garLoopResultBuilder]: For program point L117(lines 117 144) no Hoare annotation was computed. [2021-08-26 03:52:29,884 INFO L860 garLoopResultBuilder]: At program point L142(lines 25 145) the Hoare annotation is: true [2021-08-26 03:52:29,884 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 86) no Hoare annotation was computed. [2021-08-26 03:52:29,884 INFO L860 garLoopResultBuilder]: At program point L134(lines 25 145) the Hoare annotation is: true [2021-08-26 03:52:29,888 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 03:52:29,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:52:29 BoogieIcfgContainer [2021-08-26 03:52:29,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 03:52:29,900 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 03:52:29,900 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 03:52:29,901 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 03:52:29,901 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:51:49" (3/4) ... [2021-08-26 03:52:29,903 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 03:52:29,912 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-26 03:52:29,912 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 03:52:29,912 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:52:29,913 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:52:29,962 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 03:52:29,962 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 03:52:29,963 INFO L168 Benchmark]: Toolchain (without parser) took 49976.62 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 32.2 MB in the beginning and 49.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2021-08-26 03:52:29,964 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 37.1 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:52:29,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.48 ms. Allocated memory is still 54.5 MB. Free memory was 32.1 MB in the beginning and 35.3 MB in the end (delta: -3.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2021-08-26 03:52:29,964 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.95 ms. Allocated memory is still 54.5 MB. Free memory was 35.3 MB in the beginning and 33.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:52:29,964 INFO L168 Benchmark]: Boogie Preprocessor took 37.23 ms. Allocated memory is still 54.5 MB. Free memory was 33.5 MB in the beginning and 32.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:52:29,965 INFO L168 Benchmark]: RCFGBuilder took 9055.58 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 32.4 MB in the beginning and 44.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2021-08-26 03:52:29,965 INFO L168 Benchmark]: TraceAbstraction took 40453.98 ms. Allocated memory is still 69.2 MB. Free memory was 43.4 MB in the beginning and 30.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-08-26 03:52:29,965 INFO L168 Benchmark]: Witness Printer took 61.76 ms. Allocated memory is still 69.2 MB. Free memory was 30.6 MB in the beginning and 49.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 03:52:29,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 37.1 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.48 ms. Allocated memory is still 54.5 MB. Free memory was 32.1 MB in the beginning and 35.3 MB in the end (delta: -3.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.95 ms. Allocated memory is still 54.5 MB. Free memory was 35.3 MB in the beginning and 33.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.23 ms. Allocated memory is still 54.5 MB. Free memory was 33.5 MB in the beginning and 32.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 9055.58 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 32.4 MB in the beginning and 44.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 40453.98 ms. Allocated memory is still 69.2 MB. Free memory was 43.4 MB in the beginning and 30.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Witness Printer took 61.76 ms. Allocated memory is still 69.2 MB. Free memory was 30.6 MB in the beginning and 49.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 4.2 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: 99]: 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, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40384.4ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 8.9ms, AutomataDifference: 39434.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 36.4ms, InitialAbstractionConstructionTime: 8.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 81 SDtfs, 19 SDslu, 114 SDs, 0 SdLazy, 50 SolverSat, 6 SolverUnsat, 18 SolverUnknown, 0 SolverNotchecked, 36295.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 139.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 17 NumberOfFragments, 127 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 9.0ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 21.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 8.1ms SsaConstructionTime, 142.2ms SatisfiabilityAnalysisTime, 609.7ms InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 526 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 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: 26]: Loop Invariant Derived loop invariant: main__x <= 4294967296 * (main__x / 4294967296) + 3 * ((main__x + main__x / 4294967296 * -4294967296) / 3) + 4294967296 * ((main__x + (main__x + main__x / 4294967296 * -4294967296) / 3 * -3 + main__x / 4294967296 * -4294967296) / 4294967296) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: main__x <= 4294967296 * (main__x / 4294967296) + 3 * ((main__x + main__x / 4294967296 * -4294967296) / 3) + 4294967296 * ((main__x + (main__x + main__x / 4294967296 * -4294967296) / 3 * -3 + main__x / 4294967296 * -4294967296) / 4294967296) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: main__x <= 4294967296 * (main__x / 4294967296) + 3 * ((main__x + main__x / 4294967296 * -4294967296) / 3) + 4294967296 * ((main__x + (main__x + main__x / 4294967296 * -4294967296) / 3 * -3 + main__x / 4294967296 * -4294967296) / 4294967296) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-26 03:52:29,992 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...