./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum01-2.i --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/loops/sum01-2.i -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 7e441b408705ca8366624dd497de58641bec51a6 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 03:10:28,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 03:10:28,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 03:10:28,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 03:10:28,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 03:10:28,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 03:10:28,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 03:10:28,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 03:10:28,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 03:10:28,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 03:10:28,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 03:10:28,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 03:10:28,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 03:10:28,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 03:10:28,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 03:10:28,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 03:10:28,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 03:10:28,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 03:10:28,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 03:10:28,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 03:10:28,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 03:10:28,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 03:10:28,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 03:10:28,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 03:10:28,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 03:10:28,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 03:10:28,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 03:10:28,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 03:10:28,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 03:10:28,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 03:10:28,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 03:10:28,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 03:10:28,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 03:10:28,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 03:10:28,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 03:10:28,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 03:10:28,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 03:10:28,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 03:10:28,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 03:10:28,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 03:10:28,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 03:10:28,670 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 03:10:28,698 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 03:10:28,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 03:10:28,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 03:10:28,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 03:10:28,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 03:10:28,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 03:10:28,701 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 03:10:28,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 03:10:28,701 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 03:10:28,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 03:10:28,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 03:10:28,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 03:10:28,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 03:10:28,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 03:10:28,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 03:10:28,702 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 03:10:28,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 03:10:28,722 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 03:10:28,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 03:10:28,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 03:10:28,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 03:10:28,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 03:10:28,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:10:28,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 03:10:28,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 03:10:28,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 03:10:28,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 03:10:28,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 03:10:28,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 03:10:28,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 03:10:28,727 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e441b408705ca8366624dd497de58641bec51a6 [2021-08-26 03:10:28,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 03:10:28,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 03:10:28,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 03:10:28,954 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 03:10:28,954 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 03:10:28,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum01-2.i [2021-08-26 03:10:29,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89a694583/983aed07e846469e9766b2ef9138b4fc/FLAGbbb6a72d0 [2021-08-26 03:10:29,389 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 03:10:29,389 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum01-2.i [2021-08-26 03:10:29,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89a694583/983aed07e846469e9766b2ef9138b4fc/FLAGbbb6a72d0 [2021-08-26 03:10:29,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89a694583/983aed07e846469e9766b2ef9138b4fc [2021-08-26 03:10:29,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 03:10:29,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 03:10:29,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 03:10:29,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 03:10:29,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 03:10:29,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:10:29" (1/1) ... [2021-08-26 03:10:29,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1d2236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:10:29, skipping insertion in model container [2021-08-26 03:10:29,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:10:29" (1/1) ... [2021-08-26 03:10:29,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 03:10:29,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 03:10:29,936 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/loops/sum01-2.i[849,862] [2021-08-26 03:10:29,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:10:29,948 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 03:10:29,960 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/loops/sum01-2.i[849,862] [2021-08-26 03:10:29,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:10:29,990 INFO L208 MainTranslator]: Completed translation [2021-08-26 03:10:29,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:10:29 WrapperNode [2021-08-26 03:10:29,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 03:10:29,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 03:10:29,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 03:10:29,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 03:10:29,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:10:29" (1/1) ... [2021-08-26 03:10:30,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:10:29" (1/1) ... [2021-08-26 03:10:30,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 03:10:30,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 03:10:30,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 03:10:30,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 03:10:30,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:10:29" (1/1) ... [2021-08-26 03:10:30,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:10:29" (1/1) ... [2021-08-26 03:10:30,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:10:29" (1/1) ... [2021-08-26 03:10:30,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:10:29" (1/1) ... [2021-08-26 03:10:30,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:10:29" (1/1) ... [2021-08-26 03:10:30,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:10:29" (1/1) ... [2021-08-26 03:10:30,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:10:29" (1/1) ... [2021-08-26 03:10:30,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 03:10:30,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 03:10:30,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 03:10:30,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 03:10:30,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:10:29" (1/1) ... [2021-08-26 03:10:30,044 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:10:30,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:10:30,070 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 03:10:30,100 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 03:10:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 03:10:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 03:10:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 03:10:30,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 03:10:30,287 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 03:10:30,287 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-26 03:10:30,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:10:30 BoogieIcfgContainer [2021-08-26 03:10:30,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 03:10:30,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 03:10:30,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 03:10:30,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 03:10:30,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:10:29" (1/3) ... [2021-08-26 03:10:30,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10278591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:10:30, skipping insertion in model container [2021-08-26 03:10:30,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:10:29" (2/3) ... [2021-08-26 03:10:30,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10278591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:10:30, skipping insertion in model container [2021-08-26 03:10:30,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:10:30" (3/3) ... [2021-08-26 03:10:30,294 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2021-08-26 03:10:30,298 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 03:10:30,298 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 03:10:30,338 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 03:10:30,344 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 03:10:30,345 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 03:10:30,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 03:10:30,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 03:10:30,358 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:10:30,359 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:10:30,359 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:10:30,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:10:30,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1807120264, now seen corresponding path program 1 times [2021-08-26 03:10:30,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:10:30,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592389097] [2021-08-26 03:10:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:10:30,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:10:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:10:30,513 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 03:10:30,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:10:30,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592389097] [2021-08-26 03:10:30,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592389097] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:10:30,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:10:30,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 03:10:30,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550849410] [2021-08-26 03:10:30,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 03:10:30,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:10:30,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 03:10:30,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 03:10:30,559 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-08-26 03:10:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:10:30,567 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-08-26 03:10:30,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 03:10:30,568 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) Word has length 7 [2021-08-26 03:10:30,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:10:30,573 INFO L225 Difference]: With dead ends: 19 [2021-08-26 03:10:30,573 INFO L226 Difference]: Without dead ends: 9 [2021-08-26 03:10:30,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 03:10:30,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-08-26 03:10:30,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-08-26 03:10:30,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 03:10:30,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-08-26 03:10:30,593 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-08-26 03:10:30,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:10:30,594 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-08-26 03:10:30,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-08-26 03:10:30,594 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-08-26 03:10:30,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 03:10:30,595 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:10:30,595 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:10:30,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 03:10:30,596 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:10:30,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:10:30,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1806941518, now seen corresponding path program 1 times [2021-08-26 03:10:30,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:10:30,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515477090] [2021-08-26 03:10:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:10:30,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:10:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:10:30,716 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 03:10:30,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:10:30,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515477090] [2021-08-26 03:10:30,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515477090] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:10:30,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:10:30,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 03:10:30,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311081906] [2021-08-26 03:10:30,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 03:10:30,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:10:30,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 03:10:30,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:10:30,720 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2021-08-26 03:10:30,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:10:30,760 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-08-26 03:10:30,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 03:10:30,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) Word has length 7 [2021-08-26 03:10:30,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:10:30,762 INFO L225 Difference]: With dead ends: 14 [2021-08-26 03:10:30,762 INFO L226 Difference]: Without dead ends: 10 [2021-08-26 03:10:30,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:10:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-08-26 03:10:30,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-08-26 03:10:30,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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 03:10:30,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-08-26 03:10:30,765 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-08-26 03:10:30,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:10:30,766 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-08-26 03:10:30,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2021-08-26 03:10:30,766 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-08-26 03:10:30,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 03:10:30,767 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:10:30,767 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:10:30,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 03:10:30,768 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:10:30,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:10:30,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1357243696, now seen corresponding path program 1 times [2021-08-26 03:10:30,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:10:30,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894573954] [2021-08-26 03:10:30,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:10:30,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:10:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:10:30,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:10:30,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:10:30,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894573954] [2021-08-26 03:10:30,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894573954] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:10:30,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359703302] [2021-08-26 03:10:30,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:10:30,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:10:30,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:10:30,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:10:30,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 03:10:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:10:30,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-26 03:10:31,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:10:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:10:31,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359703302] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:10:31,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:10:31,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-08-26 03:10:31,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766328928] [2021-08-26 03:10:31,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 03:10:31,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:10:31,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 03:10:31,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-08-26 03:10:31,227 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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 03:10:31,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:10:31,274 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-08-26 03:10:31,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 03:10:31,275 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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 9 [2021-08-26 03:10:31,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:10:31,280 INFO L225 Difference]: With dead ends: 16 [2021-08-26 03:10:31,280 INFO L226 Difference]: Without dead ends: 12 [2021-08-26 03:10:31,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-08-26 03:10:31,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-08-26 03:10:31,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-08-26 03:10:31,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 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 03:10:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-08-26 03:10:31,282 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2021-08-26 03:10:31,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:10:31,282 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-08-26 03:10:31,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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 03:10:31,283 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-08-26 03:10:31,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 03:10:31,283 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:10:31,283 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:10:31,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 03:10:31,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:10:31,500 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:10:31,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:10:31,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1305633646, now seen corresponding path program 2 times [2021-08-26 03:10:31,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:10:31,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670066401] [2021-08-26 03:10:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:10:31,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:10:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:10:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:10:31,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:10:31,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670066401] [2021-08-26 03:10:31,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670066401] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:10:31,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200819535] [2021-08-26 03:10:31,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 03:10:31,677 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:10:31,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:10:31,678 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:10:31,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 03:10:31,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 03:10:31,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:10:31,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 03:10:31,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:10:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:10:31,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200819535] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:10:31,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:10:31,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-08-26 03:10:31,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801291975] [2021-08-26 03:10:31,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-26 03:10:31,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:10:31,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-26 03:10:31,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-08-26 03:10:31,986 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 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 03:10:32,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:10:32,166 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-08-26 03:10:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 03:10:32,167 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 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 11 [2021-08-26 03:10:32,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:10:32,167 INFO L225 Difference]: With dead ends: 22 [2021-08-26 03:10:32,168 INFO L226 Difference]: Without dead ends: 16 [2021-08-26 03:10:32,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 245.2ms TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-08-26 03:10:32,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-26 03:10:32,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-26 03:10:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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 03:10:32,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-08-26 03:10:32,170 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2021-08-26 03:10:32,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:10:32,170 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-08-26 03:10:32,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 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 03:10:32,171 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-08-26 03:10:32,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 03:10:32,171 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:10:32,171 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:10:32,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 03:10:32,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-26 03:10:32,379 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:10:32,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:10:32,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1583233494, now seen corresponding path program 3 times [2021-08-26 03:10:32,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:10:32,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897597284] [2021-08-26 03:10:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:10:32,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:10:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:10:32,548 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-26 03:10:32,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:10:32,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897597284] [2021-08-26 03:10:32,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897597284] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:10:32,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029625818] [2021-08-26 03:10:32,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 03:10:32,549 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:10:32,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:10:32,550 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 03:10:32,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 03:10:32,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-26 03:10:32,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:10:32,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-26 03:10:32,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:10:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:10:32,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029625818] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:10:32,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:10:32,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 20 [2021-08-26 03:10:32,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351125921] [2021-08-26 03:10:32,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-26 03:10:32,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:10:32,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-26 03:10:32,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-08-26 03:10:32,899 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 20 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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 03:10:33,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:10:33,201 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-08-26 03:10:33,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-26 03:10:33,201 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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 15 [2021-08-26 03:10:33,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:10:33,201 INFO L225 Difference]: With dead ends: 20 [2021-08-26 03:10:33,201 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 03:10:33,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 393.6ms TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2021-08-26 03:10:33,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 03:10:33,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 03:10:33,202 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 03:10:33,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 03:10:33,203 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-08-26 03:10:33,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:10:33,203 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 03:10:33,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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 03:10:33,203 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 03:10:33,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 03:10:33,205 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 03:10:33,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 03:10:33,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:10:33,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 03:10:33,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:10:33,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:10:33,469 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 03:10:33,469 INFO L857 garLoopResultBuilder]: For program point L25-2(lines 25 27) no Hoare annotation was computed. [2021-08-26 03:10:33,469 INFO L853 garLoopResultBuilder]: At program point L25-3(lines 25 27) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~i~0 1) (= ULTIMATE.start_main_~sn~0 0)) (let ((.cse1 (* 2 ULTIMATE.start_main_~i~0)) (.cse0 (+ ULTIMATE.start_main_~sn~0 2))) (and (<= .cse0 .cse1) (< ULTIMATE.start_main_~sn~0 (+ (* 2 ULTIMATE.start_main_~n~0) 1)) (<= .cse1 .cse0)))) [2021-08-26 03:10:33,470 INFO L857 garLoopResultBuilder]: For program point L25-4(lines 25 27) no Hoare annotation was computed. [2021-08-26 03:10:33,470 INFO L857 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-08-26 03:10:33,470 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 03:10:33,470 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 03:10:33,470 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 03:10:33,470 INFO L857 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-08-26 03:10:33,470 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 03:10:33,470 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-08-26 03:10:33,471 INFO L860 garLoopResultBuilder]: At program point L16-2(lines 1 29) the Hoare annotation is: true [2021-08-26 03:10:33,473 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 03:10:33,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:10:33 BoogieIcfgContainer [2021-08-26 03:10:33,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 03:10:33,482 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 03:10:33,482 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 03:10:33,482 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 03:10:33,482 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:10:30" (3/4) ... [2021-08-26 03:10:33,484 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 03:10:33,490 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-26 03:10:33,490 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 03:10:33,490 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:10:33,490 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:10:33,508 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 03:10:33,509 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 03:10:33,510 INFO L168 Benchmark]: Toolchain (without parser) took 3693.51 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 47.5 MB in the beginning and 23.7 MB in the end (delta: 23.9 MB). Peak memory consumption was 37.0 MB. Max. memory is 16.1 GB. [2021-08-26 03:10:33,510 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 67.1 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:10:33,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.72 ms. Allocated memory is still 67.1 MB. Free memory was 47.4 MB in the beginning and 50.3 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 03:10:33,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.05 ms. Allocated memory is still 67.1 MB. Free memory was 50.1 MB in the beginning and 48.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:10:33,512 INFO L168 Benchmark]: Boogie Preprocessor took 21.25 ms. Allocated memory is still 67.1 MB. Free memory was 48.7 MB in the beginning and 47.7 MB in the end (delta: 971.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:10:33,512 INFO L168 Benchmark]: RCFGBuilder took 249.94 ms. Allocated memory is still 67.1 MB. Free memory was 47.7 MB in the beginning and 36.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 03:10:33,512 INFO L168 Benchmark]: TraceAbstraction took 3191.52 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 36.3 MB in the beginning and 25.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2021-08-26 03:10:33,513 INFO L168 Benchmark]: Witness Printer took 27.01 ms. Allocated memory is still 81.8 MB. Free memory was 25.8 MB in the beginning and 23.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:10:33,514 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 67.1 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 175.72 ms. Allocated memory is still 67.1 MB. Free memory was 47.4 MB in the beginning and 50.3 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.05 ms. Allocated memory is still 67.1 MB. Free memory was 50.1 MB in the beginning and 48.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.25 ms. Allocated memory is still 67.1 MB. Free memory was 48.7 MB in the beginning and 47.7 MB in the end (delta: 971.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 249.94 ms. Allocated memory is still 67.1 MB. Free memory was 47.7 MB in the beginning and 36.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3191.52 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 36.3 MB in the beginning and 25.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. * Witness Printer took 27.01 ms. Allocated memory is still 81.8 MB. Free memory was 25.8 MB in the beginning and 23.7 MB in the end (delta: 2.1 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: 17]: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3136.6ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 7.4ms, AutomataDifference: 610.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 46.2ms, InitialAbstractionConstructionTime: 7.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 31 SDtfs, 27 SDslu, 60 SDs, 0 SdLazy, 302 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 137.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 784.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=4, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.6ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 31 HoareAnnotationTreeSize, 2 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 17.7ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 110 FormulaSimplificationTreeSizeReductionInter, 23.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 37.8ms SsaConstructionTime, 121.0ms SatisfiabilityAnalysisTime, 1377.3ms InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 586 SizeOfPredicates, 12 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 4/42 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: 25]: Loop Invariant Derived loop invariant: (i == 1 && sn == 0) || ((sn + 2 <= 2 * i && sn < 2 * n + 1) && 2 * i <= sn + 2) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-26 03:10:33,539 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...