./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/nla-digbench-scaling/geo1-ll_unwindbound50.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 dac7e437197a3948d916763ae4622f6f32af8f4d ...................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 13:14:11,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 13:14:11,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 13:14:11,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 13:14:11,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 13:14:11,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 13:14:11,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 13:14:11,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 13:14:11,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 13:14:11,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 13:14:11,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 13:14:11,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 13:14:11,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 13:14:11,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 13:14:11,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 13:14:11,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 13:14:11,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 13:14:11,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 13:14:11,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 13:14:11,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 13:14:11,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 13:14:11,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 13:14:11,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 13:14:11,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 13:14:11,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 13:14:11,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 13:14:11,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 13:14:11,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 13:14:11,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 13:14:11,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 13:14:11,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 13:14:11,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 13:14:11,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 13:14:11,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 13:14:11,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 13:14:11,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 13:14:11,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 13:14:11,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 13:14:11,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 13:14:11,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 13:14:11,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 13:14:11,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 13:14:11,299 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 13:14:11,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 13:14:11,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 13:14:11,300 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 13:14:11,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 13:14:11,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 13:14:11,301 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 13:14:11,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 13:14:11,302 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 13:14:11,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 13:14:11,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 13:14:11,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 13:14:11,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 13:14:11,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 13:14:11,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 13:14:11,303 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 13:14:11,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 13:14:11,303 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 13:14:11,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 13:14:11,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 13:14:11,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 13:14:11,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 13:14:11,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:14:11,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 13:14:11,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 13:14:11,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 13:14:11,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 13:14:11,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 13:14:11,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 13:14:11,321 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 13:14:11,322 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dac7e437197a3948d916763ae4622f6f32af8f4d [2021-08-29 13:14:11,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 13:14:11,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 13:14:11,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 13:14:11,625 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 13:14:11,626 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 13:14:11,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound50.c [2021-08-29 13:14:11,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d6e58ae/b254023be0bf4f998d2c24ab17cacda6/FLAG26e764f78 [2021-08-29 13:14:12,107 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 13:14:12,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound50.c [2021-08-29 13:14:12,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d6e58ae/b254023be0bf4f998d2c24ab17cacda6/FLAG26e764f78 [2021-08-29 13:14:12,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d6e58ae/b254023be0bf4f998d2c24ab17cacda6 [2021-08-29 13:14:12,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 13:14:12,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 13:14:12,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 13:14:12,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 13:14:12,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 13:14:12,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:14:12" (1/1) ... [2021-08-29 13:14:12,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33784bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:14:12, skipping insertion in model container [2021-08-29 13:14:12,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:14:12" (1/1) ... [2021-08-29 13:14:12,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 13:14:12,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 13:14:12,736 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/nla-digbench-scaling/geo1-ll_unwindbound50.c[546,559] [2021-08-29 13:14:12,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:14:12,758 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 13:14:12,771 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/nla-digbench-scaling/geo1-ll_unwindbound50.c[546,559] [2021-08-29 13:14:12,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:14:12,795 INFO L208 MainTranslator]: Completed translation [2021-08-29 13:14:12,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:14:12 WrapperNode [2021-08-29 13:14:12,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 13:14:12,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 13:14:12,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 13:14:12,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 13:14:12,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:14:12" (1/1) ... [2021-08-29 13:14:12,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:14:12" (1/1) ... [2021-08-29 13:14:12,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 13:14:12,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 13:14:12,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 13:14:12,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 13:14:12,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:14:12" (1/1) ... [2021-08-29 13:14:12,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:14:12" (1/1) ... [2021-08-29 13:14:12,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:14:12" (1/1) ... [2021-08-29 13:14:12,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:14:12" (1/1) ... [2021-08-29 13:14:12,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:14:12" (1/1) ... [2021-08-29 13:14:12,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:14:12" (1/1) ... [2021-08-29 13:14:12,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:14:12" (1/1) ... [2021-08-29 13:14:12,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 13:14:12,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 13:14:12,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 13:14:12,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 13:14:12,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:14:12" (1/1) ... [2021-08-29 13:14:12,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:14:12,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:14:12,938 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) [2021-08-29 13:14:12,960 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 [2021-08-29 13:14:12,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 13:14:12,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 13:14:12,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 13:14:12,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 13:14:13,147 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 13:14:13,147 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-08-29 13:14:13,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:14:13 BoogieIcfgContainer [2021-08-29 13:14:13,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 13:14:13,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 13:14:13,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 13:14:13,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 13:14:13,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 01:14:12" (1/3) ... [2021-08-29 13:14:13,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2912960e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:14:13, skipping insertion in model container [2021-08-29 13:14:13,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:14:12" (2/3) ... [2021-08-29 13:14:13,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2912960e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:14:13, skipping insertion in model container [2021-08-29 13:14:13,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:14:13" (3/3) ... [2021-08-29 13:14:13,155 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound50.c [2021-08-29 13:14:13,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 13:14:13,160 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-29 13:14:13,207 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 13:14:13,217 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 [2021-08-29 13:14:13,217 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-29 13:14:13,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 states have internal predecessors, (26), 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) [2021-08-29 13:14:13,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 13:14:13,239 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:14:13,239 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:14:13,240 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 13:14:13,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:14:13,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2021-08-29 13:14:13,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:14:13,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335882540] [2021-08-29 13:14:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:14:13,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:14:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:14:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:14:13,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:14:13,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335882540] [2021-08-29 13:14:13,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335882540] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:14:13,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:14:13,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 13:14:13,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466806895] [2021-08-29 13:14:13,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 13:14:13,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:14:13,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 13:14:13,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:14:13,468 INFO L87 Difference]: Start difference. First operand has 20 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 states have internal predecessors, (26), 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 5.0) internal successors, (10), 2 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) [2021-08-29 13:14:13,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:14:13,511 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2021-08-29 13:14:13,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 13:14:13,514 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) Word has length 10 [2021-08-29 13:14:13,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:14:13,520 INFO L225 Difference]: With dead ends: 37 [2021-08-29 13:14:13,520 INFO L226 Difference]: Without dead ends: 16 [2021-08-29 13:14:13,522 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:14:13,525 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.26ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.19ms IncrementalHoareTripleChecker+Time [2021-08-29 13:14:13,526 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 21 Unknown, 0 Unchecked, 0.26ms Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 30.19ms Time] [2021-08-29 13:14:13,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-29 13:14:13,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-29 13:14:13,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) 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) [2021-08-29 13:14:13,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-08-29 13:14:13,550 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2021-08-29 13:14:13,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:14:13,550 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-08-29 13:14:13,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-08-29 13:14:13,551 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-08-29 13:14:13,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 13:14:13,551 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:14:13,551 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:14:13,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 13:14:13,552 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 13:14:13,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:14:13,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-08-29 13:14:13,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:14:13,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959445189] [2021-08-29 13:14:13,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:14:13,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:14:13,593 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:14:13,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018738333] [2021-08-29 13:14:13,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:14:13,594 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:14:13,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:14:13,602 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) [2021-08-29 13:14:13,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 13:14:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:14:13,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 13:14:13,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:14:13,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:14:13,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 13:14:13,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:14:13,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959445189] [2021-08-29 13:14:13,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:14:13,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018738333] [2021-08-29 13:14:13,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018738333] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:14:13,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:14:13,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 13:14:13,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93493044] [2021-08-29 13:14:13,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 13:14:13,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:14:13,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 13:14:13,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 13:14:13,815 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-08-29 13:14:13,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:14:13,909 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-08-29 13:14:13,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:14:13,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) Word has length 10 [2021-08-29 13:14:13,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:14:13,911 INFO L225 Difference]: With dead ends: 30 [2021-08-29 13:14:13,911 INFO L226 Difference]: Without dead ends: 23 [2021-08-29 13:14:13,911 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.75ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:14:13,912 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.09ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.12ms IncrementalHoareTripleChecker+Time [2021-08-29 13:14:13,913 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 58 Unknown, 0 Unchecked, 1.09ms Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 72.12ms Time] [2021-08-29 13:14:13,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-29 13:14:13,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-08-29 13:14:13,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 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) [2021-08-29 13:14:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-08-29 13:14:13,919 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2021-08-29 13:14:13,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:14:13,920 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-08-29 13:14:13,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-08-29 13:14:13,920 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-08-29 13:14:13,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 13:14:13,920 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:14:13,921 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:14:13,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 13:14:14,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:14:14,146 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 13:14:14,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:14:14,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1782419994, now seen corresponding path program 1 times [2021-08-29 13:14:14,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:14:14,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729234381] [2021-08-29 13:14:14,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:14:14,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:14:14,163 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:14:14,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34389280] [2021-08-29 13:14:14,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:14:14,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:14:14,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:14:14,166 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) [2021-08-29 13:14:14,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 13:14:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:14:14,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-29 13:14:14,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:14:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:14:14,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:14:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:14:15,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:14:15,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729234381] [2021-08-29 13:14:15,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:14:15,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34389280] [2021-08-29 13:14:15,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34389280] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 13:14:15,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 13:14:15,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-29 13:14:15,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620257288] [2021-08-29 13:14:15,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 13:14:15,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:14:15,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 13:14:15,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-29 13:14:15,013 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-08-29 13:14:15,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:14:15,189 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-08-29 13:14:15,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 13:14:15,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 14 [2021-08-29 13:14:15,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:14:15,190 INFO L225 Difference]: With dead ends: 25 [2021-08-29 13:14:15,190 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 13:14:15,190 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 517.22ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-08-29 13:14:15,191 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131.16ms IncrementalHoareTripleChecker+Time [2021-08-29 13:14:15,192 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 65 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [13 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 131.16ms Time] [2021-08-29 13:14:15,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 13:14:15,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 13:14:15,193 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) [2021-08-29 13:14:15,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 13:14:15,193 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-08-29 13:14:15,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:14:15,194 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 13:14:15,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-08-29 13:14:15,194 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 13:14:15,194 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 13:14:15,196 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-08-29 13:14:15,197 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-08-29 13:14:15,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 13:14:15,420 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,SelfDestructingSolverStorable2 [2021-08-29 13:14:15,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 13:14:15,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:14:15,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:14:15,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:14:15,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:14:15,502 INFO L854 garLoopResultBuilder]: At program point L35-3(lines 35 45) the Hoare annotation is: (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))) (and (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0))) [2021-08-29 13:14:15,503 INFO L858 garLoopResultBuilder]: For program point L35-4(lines 35 45) no Hoare annotation was computed. [2021-08-29 13:14:15,503 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-08-29 13:14:15,503 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 13:14:15,503 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 13:14:15,503 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 13:14:15,504 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-08-29 13:14:15,504 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-08-29 13:14:15,507 INFO L854 garLoopResultBuilder]: At program point L16-2(lines 38 39) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))) [2021-08-29 13:14:15,507 INFO L858 garLoopResultBuilder]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2021-08-29 13:14:15,510 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 14) no Hoare annotation was computed. [2021-08-29 13:14:15,510 INFO L858 garLoopResultBuilder]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2021-08-29 13:14:15,511 INFO L861 garLoopResultBuilder]: At program point L16-5(lines 15 21) the Hoare annotation is: true [2021-08-29 13:14:15,511 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 13:14:15,511 INFO L861 garLoopResultBuilder]: At program point L50(lines 23 51) the Hoare annotation is: true [2021-08-29 13:14:15,511 INFO L858 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-08-29 13:14:15,511 INFO L858 garLoopResultBuilder]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2021-08-29 13:14:15,511 INFO L858 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-08-29 13:14:15,512 INFO L858 garLoopResultBuilder]: For program point L13-2(line 13) no Hoare annotation was computed. [2021-08-29 13:14:15,512 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 35 45) no Hoare annotation was computed. [2021-08-29 13:14:15,517 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 13:14:15,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 01:14:15 BoogieIcfgContainer [2021-08-29 13:14:15,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 13:14:15,535 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 13:14:15,535 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 13:14:15,536 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 13:14:15,536 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:14:13" (3/4) ... [2021-08-29 13:14:15,539 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 13:14:15,550 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-08-29 13:14:15,551 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 13:14:15,551 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 13:14:15,551 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 13:14:15,588 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 13:14:15,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 13:14:15,589 INFO L158 Benchmark]: Toolchain (without parser) took 3058.94ms. Allocated memory was 81.8MB in the beginning and 100.7MB in the end (delta: 18.9MB). Free memory was 47.9MB in the beginning and 72.3MB in the end (delta: -24.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:14:15,589 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 81.8MB. Free memory was 64.5MB in the beginning and 64.4MB in the end (delta: 78.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:14:15,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.05ms. Allocated memory is still 81.8MB. Free memory was 47.8MB in the beginning and 61.1MB in the end (delta: -13.4MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-08-29 13:14:15,590 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.20ms. Allocated memory is still 81.8MB. Free memory was 61.1MB in the beginning and 66.9MB in the end (delta: -5.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 13:14:15,590 INFO L158 Benchmark]: Boogie Preprocessor took 29.26ms. Allocated memory is still 81.8MB. Free memory was 66.9MB in the beginning and 65.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:14:15,591 INFO L158 Benchmark]: RCFGBuilder took 244.75ms. Allocated memory is still 81.8MB. Free memory was 65.7MB in the beginning and 56.9MB in the end (delta: 8.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 13:14:15,591 INFO L158 Benchmark]: TraceAbstraction took 2381.42ms. Allocated memory was 81.8MB in the beginning and 100.7MB in the end (delta: 18.9MB). Free memory was 56.5MB in the beginning and 75.6MB in the end (delta: -19.2MB). Peak memory consumption was 275.4kB. Max. memory is 16.1GB. [2021-08-29 13:14:15,592 INFO L158 Benchmark]: Witness Printer took 53.84ms. Allocated memory is still 100.7MB. Free memory was 75.5MB in the beginning and 72.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 13:14:15,593 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 81.8MB. Free memory was 64.5MB in the beginning and 64.4MB in the end (delta: 78.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.05ms. Allocated memory is still 81.8MB. Free memory was 47.8MB in the beginning and 61.1MB in the end (delta: -13.4MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.20ms. Allocated memory is still 81.8MB. Free memory was 61.1MB in the beginning and 66.9MB in the end (delta: -5.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.26ms. Allocated memory is still 81.8MB. Free memory was 66.9MB in the beginning and 65.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 244.75ms. Allocated memory is still 81.8MB. Free memory was 65.7MB in the beginning and 56.9MB in the end (delta: 8.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2381.42ms. Allocated memory was 81.8MB in the beginning and 100.7MB in the end (delta: 18.9MB). Free memory was 56.5MB in the beginning and 75.6MB in the end (delta: -19.2MB). Peak memory consumption was 275.4kB. Max. memory is 16.1GB. * Witness Printer took 53.84ms. Allocated memory is still 100.7MB. Free memory was 75.5MB in the beginning and 72.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: 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, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2311.30ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 12.72ms, AutomataDifference: 369.88ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 78.68ms, InitialAbstractionConstructionTime: 9.76ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 233.47ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 185.03ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 128 IncrementalHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 0 mSDtfsCounter, 128 mSolverCounterSat, 2.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 538.00ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 16.88ms AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 36 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 29.74ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 42.24ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 39.08ms SsaConstructionTime, 72.35ms SatisfiabilityAnalysisTime, 974.97ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 174 SizeOfPredicates, 8 NumberOfNonLiveVariables, 155 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 1 <= cond && y + x == z * x + 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (1 <= cond && y + x == z * x + 1) || (x == 1 && z == y) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-29 13:14:15,617 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...