./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/sqrt1-ll.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/sqrt1-ll.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 9ed748155954ba99e6e57d7fa3ec0dae8b69471a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 12:00:06,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 12:00:06,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 12:00:06,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 12:00:06,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 12:00:06,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 12:00:06,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 12:00:06,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 12:00:06,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 12:00:06,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 12:00:06,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 12:00:06,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 12:00:06,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 12:00:06,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 12:00:06,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 12:00:06,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 12:00:06,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 12:00:06,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 12:00:06,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 12:00:06,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 12:00:06,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 12:00:06,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 12:00:06,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 12:00:06,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 12:00:06,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 12:00:06,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 12:00:06,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 12:00:06,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 12:00:06,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 12:00:06,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 12:00:06,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 12:00:06,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 12:00:06,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 12:00:06,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 12:00:06,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 12:00:06,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 12:00:06,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 12:00:06,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 12:00:06,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 12:00:06,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 12:00:06,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 12:00:06,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 12:00:06,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 12:00:06,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 12:00:06,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 12:00:06,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 12:00:06,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 12:00:06,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 12:00:06,504 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 12:00:06,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 12:00:06,505 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 12:00:06,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 12:00:06,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 12:00:06,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 12:00:06,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 12:00:06,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 12:00:06,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 12:00:06,506 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 12:00:06,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 12:00:06,506 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 12:00:06,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 12:00:06,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 12:00:06,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 12:00:06,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 12:00:06,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:00:06,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 12:00:06,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 12:00:06,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 12:00:06,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 12:00:06,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 12:00:06,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 12:00:06,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 12:00:06,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ed748155954ba99e6e57d7fa3ec0dae8b69471a [2021-08-29 12:00:06,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 12:00:06,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 12:00:06,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 12:00:06,817 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 12:00:06,818 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 12:00:06,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/sqrt1-ll.c [2021-08-29 12:00:06,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/001a57e3f/46f60be2225a4f3aae5363e22d933f0f/FLAG63e42888a [2021-08-29 12:00:07,207 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 12:00:07,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/sqrt1-ll.c [2021-08-29 12:00:07,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/001a57e3f/46f60be2225a4f3aae5363e22d933f0f/FLAG63e42888a [2021-08-29 12:00:07,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/001a57e3f/46f60be2225a4f3aae5363e22d933f0f [2021-08-29 12:00:07,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 12:00:07,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 12:00:07,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 12:00:07,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 12:00:07,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 12:00:07,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:00:07" (1/1) ... [2021-08-29 12:00:07,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64209748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:00:07, skipping insertion in model container [2021-08-29 12:00:07,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:00:07" (1/1) ... [2021-08-29 12:00:07,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 12:00:07,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 12:00:07,398 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/sqrt1-ll.c[520,533] [2021-08-29 12:00:07,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:00:07,425 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 12:00:07,463 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/sqrt1-ll.c[520,533] [2021-08-29 12:00:07,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:00:07,486 INFO L208 MainTranslator]: Completed translation [2021-08-29 12:00:07,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:00:07 WrapperNode [2021-08-29 12:00:07,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 12:00:07,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 12:00:07,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 12:00:07,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 12:00:07,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:00:07" (1/1) ... [2021-08-29 12:00:07,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:00:07" (1/1) ... [2021-08-29 12:00:07,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 12:00:07,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 12:00:07,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 12:00:07,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 12:00:07,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:00:07" (1/1) ... [2021-08-29 12:00:07,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:00:07" (1/1) ... [2021-08-29 12:00:07,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:00:07" (1/1) ... [2021-08-29 12:00:07,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:00:07" (1/1) ... [2021-08-29 12:00:07,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:00:07" (1/1) ... [2021-08-29 12:00:07,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:00:07" (1/1) ... [2021-08-29 12:00:07,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:00:07" (1/1) ... [2021-08-29 12:00:07,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 12:00:07,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 12:00:07,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 12:00:07,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 12:00:07,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:00:07" (1/1) ... [2021-08-29 12:00:07,553 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:00:07,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:00:07,574 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 12:00:07,598 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 12:00:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 12:00:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 12:00:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 12:00:07,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 12:00:07,752 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 12:00:07,752 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-08-29 12:00:07,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:00:07 BoogieIcfgContainer [2021-08-29 12:00:07,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 12:00:07,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 12:00:07,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 12:00:07,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 12:00:07,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 12:00:07" (1/3) ... [2021-08-29 12:00:07,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395c3618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:00:07, skipping insertion in model container [2021-08-29 12:00:07,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:00:07" (2/3) ... [2021-08-29 12:00:07,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395c3618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:00:07, skipping insertion in model container [2021-08-29 12:00:07,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:00:07" (3/3) ... [2021-08-29 12:00:07,759 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll.c [2021-08-29 12:00:07,763 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 12:00:07,763 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-29 12:00:07,805 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 12:00:07,817 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 12:00:07,817 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-29 12:00:07,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 24 states have (on average 1.625) internal successors, (39), 30 states have internal predecessors, (39), 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 12:00:07,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-29 12:00:07,831 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:00:07,832 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-29 12:00:07,832 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 12:00:07,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:00:07,837 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2021-08-29 12:00:07,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:00:07,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51324176] [2021-08-29 12:00:07,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:00:07,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:00:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:00:08,072 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 12:00:08,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:00:08,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51324176] [2021-08-29 12:00:08,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51324176] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:00:08,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:00:08,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:00:08,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995549761] [2021-08-29 12:00:08,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:00:08,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:00:08,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:00:08,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:00:08,122 INFO L87 Difference]: Start difference. First operand has 31 states, 24 states have (on average 1.625) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:00:08,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:00:08,224 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2021-08-29 12:00:08,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:00:08,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-29 12:00:08,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:00:08,231 INFO L225 Difference]: With dead ends: 57 [2021-08-29 12:00:08,231 INFO L226 Difference]: Without dead ends: 24 [2021-08-29 12:00:08,233 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.14ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:00:08,235 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.74ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.51ms IncrementalHoareTripleChecker+Time [2021-08-29 12:00:08,236 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 56 Unknown, 0 Unchecked, 9.74ms Time], IncrementalHoareTripleChecker [13 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 68.51ms Time] [2021-08-29 12:00:08,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-08-29 12:00:08,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-08-29 12:00:08,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 22 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) [2021-08-29 12:00:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-08-29 12:00:08,268 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 5 [2021-08-29 12:00:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:00:08,269 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-08-29 12:00:08,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:00:08,269 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-08-29 12:00:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 12:00:08,269 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:00:08,270 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:00:08,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 12:00:08,270 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 12:00:08,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:00:08,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2021-08-29 12:00:08,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:00:08,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760939701] [2021-08-29 12:00:08,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:00:08,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:00:08,301 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:00:08,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581933576] [2021-08-29 12:00:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:00:08,302 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:00:08,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:00:08,304 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 12:00:08,305 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 12:00:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:00:08,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 12:00:08,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:00:08,459 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 12:00:08,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:00:08,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:00:08,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760939701] [2021-08-29 12:00:08,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:00:08,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581933576] [2021-08-29 12:00:08,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581933576] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:00:08,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:00:08,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:00:08,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511824141] [2021-08-29 12:00:08,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:00:08,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:00:08,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:00:08,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:00:08,462 INFO L87 Difference]: Start difference. First operand 23 states and 23 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) [2021-08-29 12:00:08,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:00:08,553 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-08-29 12:00:08,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:00:08,553 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 [2021-08-29 12:00:08,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:00:08,554 INFO L225 Difference]: With dead ends: 44 [2021-08-29 12:00:08,554 INFO L226 Difference]: Without dead ends: 40 [2021-08-29 12:00:08,554 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.84ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:00:08,555 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.86ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.05ms IncrementalHoareTripleChecker+Time [2021-08-29 12:00:08,556 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 72 Unknown, 0 Unchecked, 0.86ms Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 76.05ms Time] [2021-08-29 12:00:08,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-29 12:00:08,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2021-08-29 12:00:08,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.2) internal successors, (36), 33 states have internal predecessors, (36), 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 12:00:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2021-08-29 12:00:08,561 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 7 [2021-08-29 12:00:08,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:00:08,561 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2021-08-29 12:00:08,561 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) [2021-08-29 12:00:08,561 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2021-08-29 12:00:08,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 12:00:08,562 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:00:08,562 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:00:08,581 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 12:00:08,773 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 12:00:08,773 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 12:00:08,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:00:08,774 INFO L82 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2021-08-29 12:00:08,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:00:08,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404142779] [2021-08-29 12:00:08,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:00:08,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:00:08,780 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:00:08,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455789450] [2021-08-29 12:00:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:00:08,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:00:08,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:00:08,782 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 12:00:08,783 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 12:00:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:00:08,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 12:00:08,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:00:08,867 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 12:00:08,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:00:08,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:00:08,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404142779] [2021-08-29 12:00:08,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:00:08,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455789450] [2021-08-29 12:00:08,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455789450] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:00:08,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:00:08,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:00:08,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724934070] [2021-08-29 12:00:08,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:00:08,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:00:08,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:00:08,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:00:08,870 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-08-29 12:00:08,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:00:08,962 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-08-29 12:00:08,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 12:00:08,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Word has length 9 [2021-08-29 12:00:08,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:00:08,963 INFO L225 Difference]: With dead ends: 41 [2021-08-29 12:00:08,963 INFO L226 Difference]: Without dead ends: 31 [2021-08-29 12:00:08,963 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:00:08,964 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.74ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.76ms IncrementalHoareTripleChecker+Time [2021-08-29 12:00:08,965 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 74 Unknown, 0 Unchecked, 0.74ms Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 74.76ms Time] [2021-08-29 12:00:08,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-29 12:00:08,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-08-29 12:00:08,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 29 states have internal predecessors, (30), 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 12:00:08,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-08-29 12:00:08,970 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 9 [2021-08-29 12:00:08,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:00:08,970 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-08-29 12:00:08,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-08-29 12:00:08,971 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-08-29 12:00:08,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 12:00:08,971 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:00:08,971 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:00:08,995 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 12:00:09,189 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 12:00:09,189 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 12:00:09,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:00:09,190 INFO L82 PathProgramCache]: Analyzing trace with hash 642019515, now seen corresponding path program 1 times [2021-08-29 12:00:09,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:00:09,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992185402] [2021-08-29 12:00:09,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:00:09,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:00:09,198 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:00:09,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316793625] [2021-08-29 12:00:09,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:00:09,199 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:00:09,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:00:09,205 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) [2021-08-29 12:00:09,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 12:00:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:00:09,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-29 12:00:09,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:00:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:00:09,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:00:09,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:00:09,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:00:09,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992185402] [2021-08-29 12:00:09,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:00:09,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316793625] [2021-08-29 12:00:09,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316793625] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:00:09,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:00:09,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-29 12:00:09,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682470968] [2021-08-29 12:00:09,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 12:00:09,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:00:09,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 12:00:09,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-29 12:00:09,466 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 12:00:09,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:00:09,729 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-08-29 12:00:09,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 12:00:09,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 12:00:09,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:00:09,729 INFO L225 Difference]: With dead ends: 43 [2021-08-29 12:00:09,729 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 12:00:09,731 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 54.84ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-29 12:00:09,734 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 173.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.00ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 202.37ms IncrementalHoareTripleChecker+Time [2021-08-29 12:00:09,738 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 103 Unknown, 0 Unchecked, 4.00ms Time], IncrementalHoareTripleChecker [48 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 202.37ms Time] [2021-08-29 12:00:09,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 12:00:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 12:00:09,741 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 12:00:09,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 12:00:09,742 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-08-29 12:00:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:00:09,742 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 12:00:09,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 12:00:09,742 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 12:00:09,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 12:00:09,745 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-08-29 12:00:09,745 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-08-29 12:00:09,746 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-08-29 12:00:09,746 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-08-29 12:00:09,747 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-08-29 12:00:09,747 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-08-29 12:00:09,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 12:00:09,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:00:09,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 12:00:09,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:00:09,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:00:09,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:00:09,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:00:09,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:00:09,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:00:09,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:00:09,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:00:10,183 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-29 12:00:10,183 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-29 12:00:10,183 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 12:00:10,183 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-29 12:00:10,183 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 12:00:10,183 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 12:00:10,183 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-29 12:00:10,184 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-08-29 12:00:10,184 INFO L854 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0) (+ 2 (* 4 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) [2021-08-29 12:00:10,184 INFO L858 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-08-29 12:00:10,184 INFO L854 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0) (+ 2 (* 4 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) [2021-08-29 12:00:10,184 INFO L858 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-08-29 12:00:10,184 INFO L854 garLoopResultBuilder]: At program point L12-8(lines 35 36) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0) (+ 2 (* 4 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) [2021-08-29 12:00:10,184 INFO L858 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-08-29 12:00:10,184 INFO L854 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0) (+ 2 (* 4 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) .cse0) (and (= ULTIMATE.start_main_~t~0 1) .cse0 (= ULTIMATE.start_main_~s~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))))) [2021-08-29 12:00:10,184 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 12:00:10,184 INFO L858 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-08-29 12:00:10,185 INFO L854 garLoopResultBuilder]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0) (+ 2 (* 4 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) .cse0) (and (= ULTIMATE.start_main_~t~0 1) .cse0 (= ULTIMATE.start_main_~s~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))))) [2021-08-29 12:00:10,185 INFO L858 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-08-29 12:00:10,185 INFO L854 garLoopResultBuilder]: At program point L29-2(lines 29 41) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0) (+ 2 (* 4 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) .cse0) (and (= ULTIMATE.start_main_~t~0 1) .cse0 (= ULTIMATE.start_main_~s~0 1)))) [2021-08-29 12:00:10,185 INFO L854 garLoopResultBuilder]: At program point L12-17(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-08-29 12:00:10,185 INFO L858 garLoopResultBuilder]: For program point L29-3(lines 29 41) no Hoare annotation was computed. [2021-08-29 12:00:10,185 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-29 12:00:10,185 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-08-29 12:00:10,185 INFO L858 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-08-29 12:00:10,185 INFO L858 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-08-29 12:00:10,185 INFO L858 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-08-29 12:00:10,185 INFO L858 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-08-29 12:00:10,185 INFO L858 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-08-29 12:00:10,185 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-29 12:00:10,186 INFO L854 garLoopResultBuilder]: At program point L47(lines 20 48) the Hoare annotation is: (and (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-08-29 12:00:10,189 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 12:00:10,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 12:00:10 BoogieIcfgContainer [2021-08-29 12:00:10,218 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 12:00:10,218 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 12:00:10,218 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 12:00:10,219 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 12:00:10,219 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:00:07" (3/4) ... [2021-08-29 12:00:10,221 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 12:00:10,229 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-08-29 12:00:10,229 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 12:00:10,229 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 12:00:10,229 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 12:00:10,250 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 12:00:10,250 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 12:00:10,250 INFO L158 Benchmark]: Toolchain (without parser) took 3023.76ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 36.8MB in the beginning and 27.3MB in the end (delta: 9.5MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2021-08-29 12:00:10,250 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory was 40.5MB in the beginning and 40.4MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:00:10,251 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.58ms. Allocated memory is still 58.7MB. Free memory was 36.7MB in the beginning and 42.2MB in the end (delta: -5.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 12:00:10,251 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.68ms. Allocated memory is still 58.7MB. Free memory was 42.0MB in the beginning and 40.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 12:00:10,251 INFO L158 Benchmark]: Boogie Preprocessor took 27.71ms. Allocated memory is still 58.7MB. Free memory was 40.5MB in the beginning and 39.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:00:10,251 INFO L158 Benchmark]: RCFGBuilder took 207.05ms. Allocated memory is still 58.7MB. Free memory was 39.4MB in the beginning and 30.8MB in the end (delta: 8.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 12:00:10,251 INFO L158 Benchmark]: TraceAbstraction took 2462.96ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 30.2MB in the beginning and 30.4MB in the end (delta: -227.6kB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2021-08-29 12:00:10,252 INFO L158 Benchmark]: Witness Printer took 31.60ms. Allocated memory is still 71.3MB. Free memory was 30.4MB in the beginning and 27.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 12:00:10,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory was 40.5MB in the beginning and 40.4MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 234.58ms. Allocated memory is still 58.7MB. Free memory was 36.7MB in the beginning and 42.2MB in the end (delta: -5.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.68ms. Allocated memory is still 58.7MB. Free memory was 42.0MB in the beginning and 40.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.71ms. Allocated memory is still 58.7MB. Free memory was 40.5MB in the beginning and 39.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 207.05ms. Allocated memory is still 58.7MB. Free memory was 39.4MB in the beginning and 30.8MB in the end (delta: 8.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2462.96ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 30.2MB in the beginning and 30.4MB in the end (delta: -227.6kB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Witness Printer took 31.60ms. Allocated memory is still 71.3MB. Free memory was 30.4MB in the beginning and 27.3MB in the end (delta: 3.1MB). 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: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: 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, 31 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 2385.54ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 7.27ms, AutomataDifference: 623.32ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 219.85ms, InitialAbstractionConstructionTime: 7.61ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 421.70ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 86 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 315.76ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 236 IncrementalHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 0 mSDtfsCounter, 236 mSolverCounterSat, 15.32ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.04ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=2, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 32.32ms AutomataMinimizationTime, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 28 NumberOfFragments, 215 HoareAnnotationTreeSize, 8 FomulaSimplifications, 156 FormulaSimplificationTreeSizeReduction, 40.37ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 355 FormulaSimplificationTreeSizeReductionInter, 173.57ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 24.48ms SsaConstructionTime, 78.04ms SatisfiabilityAnalysisTime, 517.63ms InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 294 SizeOfPredicates, 10 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 0/8 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 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (1 <= cond && t + s == 2 + 4 * a + a * a) && t == 2 * a + 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: t == 2 * a + 1 && !(0 == cond) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (1 <= cond && t + s == 2 + 4 * a + a * a) && t == 2 * a + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((1 <= cond && t + s == 2 + 4 * a + a * a) && t == 2 * a + 1) || (((t == 1 && t == 2 * a + 1) && s == 1) && !(0 == cond)) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((1 <= cond && t + s == 2 + 4 * a + a * a) && t == 2 * a + 1) || (((t == 1 && t == 2 * a + 1) && s == 1) && !(0 == cond)) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (1 <= cond && t + s == 2 + 4 * a + a * a) && t == 2 * a + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: t == 2 * a + 1 && !(0 == cond) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((1 <= cond && t + s == 2 + 4 * a + a * a) && t == 2 * a + 1) || ((t == 1 && t == 2 * a + 1) && s == 1) RESULT: Ultimate proved your program to be correct! [2021-08-29 12:00:10,279 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...