./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b149b3cef099476d14a8b122afb66552d0406eb .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 17:03:56,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:03:56,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:03:56,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:03:56,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:03:56,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:03:56,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:03:56,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:03:56,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:03:56,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:03:56,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:03:56,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:03:56,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:03:56,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:03:56,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:03:56,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:03:56,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:03:56,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:03:56,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:03:56,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:03:56,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:03:56,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:03:56,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:03:56,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:03:56,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:03:56,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:03:56,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:03:56,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:03:56,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:03:56,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:03:56,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:03:56,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:03:56,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:03:56,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:03:56,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:03:56,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:03:56,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:03:56,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:03:56,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:03:56,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:03:56,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:03:56,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:03:56,469 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:03:56,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:03:56,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:03:56,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:03:56,471 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:03:56,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:03:56,472 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:03:56,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:03:56,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:03:56,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:03:56,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:03:56,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:03:56,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:03:56,474 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:03:56,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:03:56,475 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:03:56,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:03:56,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:03:56,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:03:56,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:03:56,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:03:56,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:03:56,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:03:56,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:03:56,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:03:56,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:03:56,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:03:56,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:03:56,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:03:56,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(__VERIFIER_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 -> 1b149b3cef099476d14a8b122afb66552d0406eb [2019-11-28 17:03:56,809 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:03:56,828 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:03:56,832 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:03:56,833 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:03:56,835 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:03:56,835 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i [2019-11-28 17:03:56,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/501e89935/cc8a5c357e604b7ca22fe6a0afa93001/FLAG30d2a2af6 [2019-11-28 17:03:57,339 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:03:57,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum01_bug02_sum01_bug02_base.case.i [2019-11-28 17:03:57,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/501e89935/cc8a5c357e604b7ca22fe6a0afa93001/FLAG30d2a2af6 [2019-11-28 17:03:57,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/501e89935/cc8a5c357e604b7ca22fe6a0afa93001 [2019-11-28 17:03:57,750 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:03:57,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:03:57,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:03:57,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:03:57,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:03:57,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:03:57" (1/1) ... [2019-11-28 17:03:57,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a6e3ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:57, skipping insertion in model container [2019-11-28 17:03:57,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:03:57" (1/1) ... [2019-11-28 17:03:57,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:03:57,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:03:57,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:03:57,963 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:03:57,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:03:57,993 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:03:57,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:57 WrapperNode [2019-11-28 17:03:57,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:03:57,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:03:57,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:03:57,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:03:58,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:57" (1/1) ... [2019-11-28 17:03:58,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:57" (1/1) ... [2019-11-28 17:03:58,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:03:58,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:03:58,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:03:58,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:03:58,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:57" (1/1) ... [2019-11-28 17:03:58,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:57" (1/1) ... [2019-11-28 17:03:58,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:57" (1/1) ... [2019-11-28 17:03:58,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:57" (1/1) ... [2019-11-28 17:03:58,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:57" (1/1) ... [2019-11-28 17:03:58,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:57" (1/1) ... [2019-11-28 17:03:58,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:57" (1/1) ... [2019-11-28 17:03:58,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:03:58,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:03:58,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:03:58,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:03:58,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:03:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:03:58,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:03:58,303 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:03:58,303 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 17:03:58,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:58 BoogieIcfgContainer [2019-11-28 17:03:58,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:03:58,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:03:58,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:03:58,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:03:58,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:03:57" (1/3) ... [2019-11-28 17:03:58,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c8157b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:03:58, skipping insertion in model container [2019-11-28 17:03:58,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:03:57" (2/3) ... [2019-11-28 17:03:58,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c8157b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:03:58, skipping insertion in model container [2019-11-28 17:03:58,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:58" (3/3) ... [2019-11-28 17:03:58,312 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01_bug02_sum01_bug02_base.case.i [2019-11-28 17:03:58,322 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:03:58,329 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:03:58,341 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:03:58,364 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:03:58,364 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:03:58,365 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:03:58,365 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:03:58,365 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:03:58,365 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:03:58,366 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:03:58,366 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:03:58,381 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-28 17:03:58,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 17:03:58,386 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:58,387 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 17:03:58,388 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:58,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:58,394 INFO L82 PathProgramCache]: Analyzing trace with hash 30108868, now seen corresponding path program 1 times [2019-11-28 17:03:58,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:58,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243258249] [2019-11-28 17:03:58,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:58,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243258249] [2019-11-28 17:03:58,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:03:58,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:03:58,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36650425] [2019-11-28 17:03:58,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 17:03:58,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:58,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 17:03:58,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:03:58,525 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-28 17:03:58,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:58,542 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-11-28 17:03:58,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 17:03:58,543 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-28 17:03:58,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:58,551 INFO L225 Difference]: With dead ends: 18 [2019-11-28 17:03:58,551 INFO L226 Difference]: Without dead ends: 8 [2019-11-28 17:03:58,554 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:03:58,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-28 17:03:58,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-28 17:03:58,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 17:03:58,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-28 17:03:58,584 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-11-28 17:03:58,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:58,585 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-28 17:03:58,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 17:03:58,585 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-11-28 17:03:58,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 17:03:58,586 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:58,586 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 17:03:58,587 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:58,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:58,587 INFO L82 PathProgramCache]: Analyzing trace with hash 29781167, now seen corresponding path program 1 times [2019-11-28 17:03:58,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:58,588 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629277525] [2019-11-28 17:03:58,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:58,659 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629277525] [2019-11-28 17:03:58,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:03:58,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:03:58,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680811009] [2019-11-28 17:03:58,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 17:03:58,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:58,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 17:03:58,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 17:03:58,663 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2019-11-28 17:03:58,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:58,732 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-11-28 17:03:58,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 17:03:58,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-28 17:03:58,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:58,734 INFO L225 Difference]: With dead ends: 13 [2019-11-28 17:03:58,734 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 17:03:58,738 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:03:58,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 17:03:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-28 17:03:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 17:03:58,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-11-28 17:03:58,745 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2019-11-28 17:03:58,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:58,746 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-28 17:03:58,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 17:03:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-11-28 17:03:58,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 17:03:58,748 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:58,749 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:58,749 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:58,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:58,749 INFO L82 PathProgramCache]: Analyzing trace with hash -308490948, now seen corresponding path program 1 times [2019-11-28 17:03:58,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:58,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881538630] [2019-11-28 17:03:58,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:58,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881538630] [2019-11-28 17:03:58,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:03:58,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:03:58,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204381139] [2019-11-28 17:03:58,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:03:58,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:58,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:03:58,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:03:58,791 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2019-11-28 17:03:58,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:58,818 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-11-28 17:03:58,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:03:58,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-28 17:03:58,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:58,820 INFO L225 Difference]: With dead ends: 18 [2019-11-28 17:03:58,820 INFO L226 Difference]: Without dead ends: 11 [2019-11-28 17:03:58,820 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:03:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-28 17:03:58,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-11-28 17:03:58,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 17:03:58,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-28 17:03:58,823 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2019-11-28 17:03:58,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:58,824 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-28 17:03:58,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:03:58,824 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-28 17:03:58,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 17:03:58,825 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:58,825 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:58,825 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:58,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:58,825 INFO L82 PathProgramCache]: Analyzing trace with hash -251232646, now seen corresponding path program 1 times [2019-11-28 17:03:58,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:58,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966738829] [2019-11-28 17:03:58,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:59,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966738829] [2019-11-28 17:03:59,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125117172] [2019-11-28 17:03:59,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:03:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:59,073 WARN L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-28 17:03:59,078 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:59,197 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:03:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:59,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:03:59,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2019-11-28 17:03:59,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484578705] [2019-11-28 17:03:59,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 17:03:59,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:59,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 17:03:59,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-11-28 17:03:59,218 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 12 states. [2019-11-28 17:03:59,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:59,456 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2019-11-28 17:03:59,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-28 17:03:59,458 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 8 [2019-11-28 17:03:59,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:59,459 INFO L225 Difference]: With dead ends: 21 [2019-11-28 17:03:59,459 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 17:03:59,461 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-11-28 17:03:59,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 17:03:59,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-28 17:03:59,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 17:03:59,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-28 17:03:59,474 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2019-11-28 17:03:59,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:59,475 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-28 17:03:59,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 17:03:59,475 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-28 17:03:59,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 17:03:59,479 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:59,479 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:03:59,684 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:03:59,685 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:03:59,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:03:59,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1099734127, now seen corresponding path program 1 times [2019-11-28 17:03:59,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:03:59,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533111190] [2019-11-28 17:03:59,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:03:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:59,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533111190] [2019-11-28 17:03:59,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995510877] [2019-11-28 17:03:59,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-28 17:03:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:03:59,773 INFO L264 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:03:59,775 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:03:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:03:59,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:03:59,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-28 17:03:59,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117511803] [2019-11-28 17:03:59,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 17:03:59,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:03:59,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 17:03:59,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 17:03:59,788 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2019-11-28 17:03:59,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:03:59,813 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-28 17:03:59,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 17:03:59,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 17:03:59,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:03:59,815 INFO L225 Difference]: With dead ends: 22 [2019-11-28 17:03:59,815 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 17:03:59,816 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 17:03:59,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 17:03:59,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-28 17:03:59,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 17:03:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-11-28 17:03:59,820 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2019-11-28 17:03:59,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:03:59,821 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-11-28 17:03:59,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 17:03:59,821 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-11-28 17:03:59,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 17:03:59,822 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:03:59,822 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 17:04:00,027 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:04:00,028 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:04:00,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:04:00,028 INFO L82 PathProgramCache]: Analyzing trace with hash 2050208028, now seen corresponding path program 2 times [2019-11-28 17:04:00,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:04:00,030 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139859855] [2019-11-28 17:04:00,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:04:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:04:00,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:04:00,096 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139859855] [2019-11-28 17:04:00,096 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849642621] [2019-11-28 17:04:00,096 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:04:00,123 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 17:04:00,124 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:04:00,124 INFO L264 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 17:04:00,126 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:04:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:04:00,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:04:00,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-28 17:04:00,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984407303] [2019-11-28 17:04:00,132 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 17:04:00,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:04:00,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 17:04:00,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:04:00,133 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2019-11-28 17:04:00,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:04:00,175 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-11-28 17:04:00,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 17:04:00,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-28 17:04:00,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:04:00,176 INFO L225 Difference]: With dead ends: 24 [2019-11-28 17:04:00,176 INFO L226 Difference]: Without dead ends: 17 [2019-11-28 17:04:00,178 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:04:00,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-28 17:04:00,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-28 17:04:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 17:04:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-11-28 17:04:00,189 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2019-11-28 17:04:00,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:04:00,190 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-11-28 17:04:00,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 17:04:00,192 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-11-28 17:04:00,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 17:04:00,192 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:04:00,193 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1] [2019-11-28 17:04:00,401 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:04:00,401 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:04:00,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:04:00,402 INFO L82 PathProgramCache]: Analyzing trace with hash 2107466330, now seen corresponding path program 2 times [2019-11-28 17:04:00,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:04:00,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366564200] [2019-11-28 17:04:00,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:04:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:04:00,574 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-28 17:04:00,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366564200] [2019-11-28 17:04:00,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881350377] [2019-11-28 17:04:00,575 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:04:00,603 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 17:04:00,603 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:04:00,605 WARN L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-28 17:04:00,606 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:04:00,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 17:04:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:04:00,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:04:00,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 16 [2019-11-28 17:04:00,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983333695] [2019-11-28 17:04:00,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-28 17:04:00,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:04:00,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-28 17:04:00,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2019-11-28 17:04:00,821 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 17 states. [2019-11-28 17:04:01,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:04:01,266 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-11-28 17:04:01,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-28 17:04:01,267 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2019-11-28 17:04:01,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:04:01,268 INFO L225 Difference]: With dead ends: 27 [2019-11-28 17:04:01,268 INFO L226 Difference]: Without dead ends: 21 [2019-11-28 17:04:01,269 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2019-11-28 17:04:01,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-28 17:04:01,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-28 17:04:01,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-28 17:04:01,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-11-28 17:04:01,274 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2019-11-28 17:04:01,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:04:01,274 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-11-28 17:04:01,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-28 17:04:01,274 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-11-28 17:04:01,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 17:04:01,275 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:04:01,275 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1] [2019-11-28 17:04:01,484 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:04:01,484 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:04:01,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:04:01,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1236497329, now seen corresponding path program 3 times [2019-11-28 17:04:01,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:04:01,487 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312247404] [2019-11-28 17:04:01,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:04:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 17:04:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 17:04:01,563 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 17:04:01,563 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 17:04:01,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:04:01 BoogieIcfgContainer [2019-11-28 17:04:01,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:04:01,586 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:04:01,586 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:04:01,586 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:04:01,587 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:03:58" (3/4) ... [2019-11-28 17:04:01,590 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 17:04:01,651 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:04:01,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:04:01,654 INFO L168 Benchmark]: Toolchain (without parser) took 3901.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 961.7 MB in the beginning and 859.2 MB in the end (delta: 102.5 MB). Peak memory consumption was 217.3 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:01,655 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:04:01,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.93 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:01,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -160.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:01,662 INFO L168 Benchmark]: Boogie Preprocessor took 16.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:04:01,667 INFO L168 Benchmark]: RCFGBuilder took 207.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:01,667 INFO L168 Benchmark]: TraceAbstraction took 3280.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 865.9 MB in the end (delta: 226.6 MB). Peak memory consumption was 226.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:01,668 INFO L168 Benchmark]: Witness Printer took 65.58 ms. Allocated memory is still 1.1 GB. Free memory was 865.9 MB in the beginning and 859.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:04:01,673 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 241.93 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 83.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -160.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 207.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3280.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 865.9 MB in the end (delta: 226.6 MB). Peak memory consumption was 226.6 MB. Max. memory is 11.5 GB. * Witness Printer took 65.58 ms. Allocated memory is still 1.1 GB. Free memory was 865.9 MB in the beginning and 859.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND TRUE i==4 [L15] sn=-10 [L13] i++ [L13] COND FALSE !(i<=n) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 32 SDslu, 63 SDs, 0 SdLazy, 276 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 5659 SizeOfPredicates, 12 NumberOfNonLiveVariables, 124 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 22/61 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...