./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i --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/loop-zilu/benchmark52_polynomial.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f22151260432e5b71f08e38556ae1504245a6b14 ..................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:47:59,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 11:47:59,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 11:47:59,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 11:47:59,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 11:47:59,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 11:47:59,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 11:47:59,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 11:47:59,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 11:47:59,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 11:47:59,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 11:47:59,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 11:47:59,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 11:47:59,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 11:47:59,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 11:47:59,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 11:47:59,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 11:47:59,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 11:47:59,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 11:47:59,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 11:47:59,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 11:47:59,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 11:47:59,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 11:47:59,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 11:47:59,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 11:47:59,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 11:47:59,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 11:47:59,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 11:47:59,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 11:47:59,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 11:47:59,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 11:47:59,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 11:47:59,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 11:47:59,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 11:47:59,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 11:47:59,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 11:47:59,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 11:47:59,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 11:47:59,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 11:47:59,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 11:47:59,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 11:47:59,136 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 11:47:59,163 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 11:47:59,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 11:47:59,164 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 11:47:59,164 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 11:47:59,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 11:47:59,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 11:47:59,166 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 11:47:59,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 11:47:59,166 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 11:47:59,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 11:47:59,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 11:47:59,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 11:47:59,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 11:47:59,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 11:47:59,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 11:47:59,168 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 11:47:59,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 11:47:59,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 11:47:59,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 11:47:59,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 11:47:59,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 11:47:59,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 11:47:59,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:47:59,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 11:47:59,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 11:47:59,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 11:47:59,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 11:47:59,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 11:47:59,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 11:47:59,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 11:47:59,170 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f22151260432e5b71f08e38556ae1504245a6b14 [2021-08-29 11:47:59,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 11:47:59,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 11:47:59,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 11:47:59,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 11:47:59,463 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 11:47:59,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2021-08-29 11:47:59,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f68615507/19394edd01d944509ac3ffa3a98c28a0/FLAGce8b6c1fa [2021-08-29 11:47:59,984 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 11:47:59,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2021-08-29 11:48:00,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f68615507/19394edd01d944509ac3ffa3a98c28a0/FLAGce8b6c1fa [2021-08-29 11:48:00,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f68615507/19394edd01d944509ac3ffa3a98c28a0 [2021-08-29 11:48:00,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 11:48:00,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 11:48:00,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 11:48:00,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 11:48:00,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 11:48:00,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:48:00" (1/1) ... [2021-08-29 11:48:00,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34e66f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:00, skipping insertion in model container [2021-08-29 11:48:00,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:48:00" (1/1) ... [2021-08-29 11:48:00,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 11:48:00,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 11:48:00,517 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i[872,885] [2021-08-29 11:48:00,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:48:00,534 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 11:48:00,543 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i[872,885] [2021-08-29 11:48:00,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:48:00,554 INFO L208 MainTranslator]: Completed translation [2021-08-29 11:48:00,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:00 WrapperNode [2021-08-29 11:48:00,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 11:48:00,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 11:48:00,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 11:48:00,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 11:48:00,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:00" (1/1) ... [2021-08-29 11:48:00,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:00" (1/1) ... [2021-08-29 11:48:00,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 11:48:00,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 11:48:00,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 11:48:00,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 11:48:00,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:00" (1/1) ... [2021-08-29 11:48:00,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:00" (1/1) ... [2021-08-29 11:48:00,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:00" (1/1) ... [2021-08-29 11:48:00,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:00" (1/1) ... [2021-08-29 11:48:00,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:00" (1/1) ... [2021-08-29 11:48:00,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:00" (1/1) ... [2021-08-29 11:48:00,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:00" (1/1) ... [2021-08-29 11:48:00,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 11:48:00,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 11:48:00,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 11:48:00,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 11:48:00,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:00" (1/1) ... [2021-08-29 11:48:00,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:48:00,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:48:00,668 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 11:48:00,705 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 11:48:00,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 11:48:00,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 11:48:00,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 11:48:00,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 11:48:00,856 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 11:48:00,857 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-29 11:48:00,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:48:00 BoogieIcfgContainer [2021-08-29 11:48:00,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 11:48:00,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 11:48:00,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 11:48:00,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 11:48:00,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:48:00" (1/3) ... [2021-08-29 11:48:00,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f0e84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:48:00, skipping insertion in model container [2021-08-29 11:48:00,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:00" (2/3) ... [2021-08-29 11:48:00,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f0e84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:48:00, skipping insertion in model container [2021-08-29 11:48:00,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:48:00" (3/3) ... [2021-08-29 11:48:00,866 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark52_polynomial.i [2021-08-29 11:48:00,870 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 11:48:00,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 11:48:00,911 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 11:48:00,923 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 11:48:00,923 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 11:48:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:48:00,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 11:48:00,944 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:48:00,944 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:48:00,945 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:48:00,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:48:00,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1807089479, now seen corresponding path program 1 times [2021-08-29 11:48:00,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:48:00,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249467612] [2021-08-29 11:48:00,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:00,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:48:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:01,080 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 11:48:01,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:48:01,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249467612] [2021-08-29 11:48:01,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249467612] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:48:01,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:48:01,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 11:48:01,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376696246] [2021-08-29 11:48:01,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 11:48:01,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:48:01,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 11:48:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 11:48:01,115 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:48:01,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:48:01,162 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-08-29 11:48:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 11:48:01,178 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-29 11:48:01,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:48:01,183 INFO L225 Difference]: With dead ends: 20 [2021-08-29 11:48:01,183 INFO L226 Difference]: Without dead ends: 8 [2021-08-29 11:48:01,185 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 11:48:01,187 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.15ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.98ms IncrementalHoareTripleChecker+Time [2021-08-29 11:48:01,188 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 13 Unknown, 0 Unchecked, 0.15ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 37.98ms Time] [2021-08-29 11:48:01,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-08-29 11:48:01,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-08-29 11:48:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 11:48:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-08-29 11:48:01,238 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-08-29 11:48:01,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:48:01,238 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-08-29 11:48:01,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:48:01,238 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-08-29 11:48:01,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 11:48:01,239 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:48:01,239 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:48:01,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 11:48:01,239 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:48:01,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:48:01,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2021-08-29 11:48:01,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:48:01,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386874624] [2021-08-29 11:48:01,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:01,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:48:01,247 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 11:48:01,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999679918] [2021-08-29 11:48:01,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:01,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:48:01,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:48:01,281 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 11:48:01,283 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 11:48:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:01,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-29 11:48:01,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:48:01,374 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 11:48:01,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 11:48:01,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:48:01,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386874624] [2021-08-29 11:48:01,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 11:48:01,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999679918] [2021-08-29 11:48:01,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999679918] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:48:01,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:48:01,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 11:48:01,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731488997] [2021-08-29 11:48:01,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 11:48:01,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:48:01,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 11:48:01,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 11:48:01,377 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 11:48:01,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:48:01,389 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-08-29 11:48:01,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 11:48:01,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 11:48:01,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:48:01,390 INFO L225 Difference]: With dead ends: 13 [2021-08-29 11:48:01,390 INFO L226 Difference]: Without dead ends: 9 [2021-08-29 11:48:01,390 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 11:48:01,391 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.10ms IncrementalHoareTripleChecker+Time [2021-08-29 11:48:01,391 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 15 Unknown, 0 Unchecked, 0.19ms Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 10.10ms Time] [2021-08-29 11:48:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-08-29 11:48:01,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-08-29 11:48:01,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:48:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-08-29 11:48:01,393 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-08-29 11:48:01,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:48:01,394 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-08-29 11:48:01,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 11:48:01,394 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-08-29 11:48:01,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 11:48:01,394 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:48:01,394 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:48:01,436 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 11:48:01,608 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 11:48:01,608 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:48:01,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:48:01,609 INFO L82 PathProgramCache]: Analyzing trace with hash 183170323, now seen corresponding path program 1 times [2021-08-29 11:48:01,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:48:01,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190493049] [2021-08-29 11:48:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:01,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:48:01,623 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 11:48:01,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325641966] [2021-08-29 11:48:01,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:01,623 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:48:01,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:48:01,638 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 11:48:01,697 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 11:48:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:01,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-29 11:48:01,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:48:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:48:01,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:48:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:48:01,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:48:01,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190493049] [2021-08-29 11:48:01,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 11:48:01,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325641966] [2021-08-29 11:48:01,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325641966] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:48:01,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 11:48:01,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-08-29 11:48:01,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508437817] [2021-08-29 11:48:01,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 11:48:01,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:48:01,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 11:48:01,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-29 11:48:01,975 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:48:02,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:48:02,008 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-08-29 11:48:02,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 11:48:02,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-29 11:48:02,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:48:02,008 INFO L225 Difference]: With dead ends: 9 [2021-08-29 11:48:02,008 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 11:48:02,009 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 57.41ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-29 11:48:02,010 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.28ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.62ms IncrementalHoareTripleChecker+Time [2021-08-29 11:48:02,010 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.28ms Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 15.62ms Time] [2021-08-29 11:48:02,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 11:48:02,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 11:48:02,011 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 11:48:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 11:48:02,011 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-08-29 11:48:02,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:48:02,011 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 11:48:02,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:48:02,012 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 11:48:02,012 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 11:48:02,014 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 11:48:02,035 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 11:48:02,229 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 11:48:02,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 11:48:02,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:48:02,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:48:02,263 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 11:48:02,263 INFO L858 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-08-29 11:48:02,264 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-08-29 11:48:02,264 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 11:48:02,264 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 11:48:02,264 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 11:48:02,264 INFO L861 garLoopResultBuilder]: At program point L26(lines 19 27) the Hoare annotation is: true [2021-08-29 11:48:02,264 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-08-29 11:48:02,264 INFO L854 garLoopResultBuilder]: At program point L22-2(lines 22 24) the Hoare annotation is: (or (and (< 0 (+ ULTIMATE.start_main_~i~0 10)) (< ULTIMATE.start_main_~i~0 10)) (and (< ULTIMATE.start_main_~i~0 11) (< 0 (+ ULTIMATE.start_main_~i~0 9)))) [2021-08-29 11:48:02,264 INFO L858 garLoopResultBuilder]: For program point L22-3(lines 22 24) no Hoare annotation was computed. [2021-08-29 11:48:02,264 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-08-29 11:48:02,264 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-08-29 11:48:02,267 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 11:48:02,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 11:48:02 BoogieIcfgContainer [2021-08-29 11:48:02,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 11:48:02,284 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 11:48:02,284 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 11:48:02,284 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 11:48:02,284 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:48:00" (3/4) ... [2021-08-29 11:48:02,287 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 11:48:02,293 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-29 11:48:02,293 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 11:48:02,293 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:48:02,293 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:48:02,313 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 11:48:02,313 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 11:48:02,329 INFO L158 Benchmark]: Toolchain (without parser) took 1932.49ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 31.6MB in the beginning and 41.1MB in the end (delta: -9.5MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2021-08-29 11:48:02,329 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.6MB in the end (delta: 34.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:48:02,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.34ms. Allocated memory is still 54.5MB. Free memory was 31.5MB in the beginning and 35.7MB in the end (delta: -4.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-08-29 11:48:02,330 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.76ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 35.7MB in the beginning and 60.8MB in the end (delta: -25.1MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2021-08-29 11:48:02,330 INFO L158 Benchmark]: Boogie Preprocessor took 21.80ms. Allocated memory is still 77.6MB. Free memory was 60.8MB in the beginning and 60.0MB in the end (delta: 785.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 11:48:02,330 INFO L158 Benchmark]: RCFGBuilder took 216.45ms. Allocated memory is still 77.6MB. Free memory was 59.8MB in the beginning and 51.9MB in the end (delta: 7.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 11:48:02,331 INFO L158 Benchmark]: TraceAbstraction took 1422.06ms. Allocated memory is still 77.6MB. Free memory was 51.4MB in the beginning and 43.6MB in the end (delta: 7.8MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2021-08-29 11:48:02,331 INFO L158 Benchmark]: Witness Printer took 44.20ms. Allocated memory is still 77.6MB. Free memory was 43.6MB in the beginning and 41.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 11:48:02,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.6MB in the end (delta: 34.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.34ms. Allocated memory is still 54.5MB. Free memory was 31.5MB in the beginning and 35.7MB in the end (delta: -4.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.76ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 35.7MB in the beginning and 60.8MB in the end (delta: -25.1MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.80ms. Allocated memory is still 77.6MB. Free memory was 60.8MB in the beginning and 60.0MB in the end (delta: 785.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 216.45ms. Allocated memory is still 77.6MB. Free memory was 59.8MB in the beginning and 51.9MB in the end (delta: 7.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1422.06ms. Allocated memory is still 77.6MB. Free memory was 51.4MB in the beginning and 43.6MB in the end (delta: 7.8MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Witness Printer took 44.20ms. Allocated memory is still 77.6MB. Free memory was 43.6MB in the beginning and 41.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. 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: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1357.40ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 13.61ms, AutomataDifference: 147.93ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 33.06ms, InitialAbstractionConstructionTime: 7.54ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 63.70ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 54.10ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54 IncrementalHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 54 mSolverCounterSat, 0.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 62.11ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 27.11ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 20 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 20.71ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 6.57ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 16.86ms SsaConstructionTime, 38.92ms SatisfiabilityAnalysisTime, 351.98ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 112 SizeOfPredicates, 3 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (0 < i + 10 && i < 10) || (i < 11 && 0 < i + 9) RESULT: Ultimate proved your program to be correct! [2021-08-29 11:48:02,371 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...