./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum04-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab 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/sum04-1.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 aeade23d65797ff650f62ff8e383f015764d9ed2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-30f4e4a [2019-11-27 23:59:48,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:59:48,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:59:48,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:59:48,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:59:48,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:59:48,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:59:48,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:59:48,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:59:48,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:59:48,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:59:48,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:59:48,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:59:48,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:59:48,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:59:48,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:59:48,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:59:48,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:59:48,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:59:48,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:59:48,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:59:48,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:59:48,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:59:48,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:59:48,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:59:48,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:59:48,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:59:48,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:59:48,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:59:48,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:59:48,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:59:48,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:59:48,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:59:48,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:59:48,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:59:48,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:59:48,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:59:48,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:59:48,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:59:48,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:59:48,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:59:48,087 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:59:48,122 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:59:48,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:59:48,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:59:48,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:59:48,126 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:59:48,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:59:48,127 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:59:48,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:59:48,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:59:48,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:59:48,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:59:48,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:59:48,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:59:48,129 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:59:48,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:59:48,130 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:59:48,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:59:48,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:59:48,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:59:48,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:59:48,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:59:48,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:59:48,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:59:48,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:59:48,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:59:48,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:59:48,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:59:48,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:59:48,134 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 -> aeade23d65797ff650f62ff8e383f015764d9ed2 [2019-11-27 23:59:48,433 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:59:48,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:59:48,454 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:59:48,455 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:59:48,456 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:59:48,457 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum04-1.i [2019-11-27 23:59:48,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d6cb6a6/1521d4a142a540cd84ace87c9e96f76c/FLAG622327ba0 [2019-11-27 23:59:48,981 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:59:48,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum04-1.i [2019-11-27 23:59:48,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d6cb6a6/1521d4a142a540cd84ace87c9e96f76c/FLAG622327ba0 [2019-11-27 23:59:49,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d6cb6a6/1521d4a142a540cd84ace87c9e96f76c [2019-11-27 23:59:49,408 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:59:49,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:59:49,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:59:49,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:59:49,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:59:49,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:59:49" (1/1) ... [2019-11-27 23:59:49,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f61f9f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:49, skipping insertion in model container [2019-11-27 23:59:49,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:59:49" (1/1) ... [2019-11-27 23:59:49,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:59:49,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:59:49,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:59:49,629 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:59:49,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:59:49,657 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:59:49,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:49 WrapperNode [2019-11-27 23:59:49,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:59:49,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:59:49,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:59:49,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:59:49,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:49" (1/1) ... [2019-11-27 23:59:49,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:49" (1/1) ... [2019-11-27 23:59:49,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:59:49,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:59:49,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:59:49,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:59:49,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:49" (1/1) ... [2019-11-27 23:59:49,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:49" (1/1) ... [2019-11-27 23:59:49,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:49" (1/1) ... [2019-11-27 23:59:49,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:49" (1/1) ... [2019-11-27 23:59:49,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:49" (1/1) ... [2019-11-27 23:59:49,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:49" (1/1) ... [2019-11-27 23:59:49,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:49" (1/1) ... [2019-11-27 23:59:49,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:59:49,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:59:49,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:59:49,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:59:49,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:49" (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 [2019-11-27 23:59:49,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:59:49,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:59:49,981 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:59:49,981 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-27 23:59:49,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:59:49 BoogieIcfgContainer [2019-11-27 23:59:49,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:59:49,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:59:49,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:59:49,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:59:49,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:59:49" (1/3) ... [2019-11-27 23:59:49,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54885b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:59:49, skipping insertion in model container [2019-11-27 23:59:49,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:59:49" (2/3) ... [2019-11-27 23:59:49,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54885b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:59:49, skipping insertion in model container [2019-11-27 23:59:49,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:59:49" (3/3) ... [2019-11-27 23:59:49,989 INFO L109 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2019-11-27 23:59:49,997 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:59:50,003 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:59:50,013 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:59:50,035 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:59:50,036 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:59:50,036 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:59:50,036 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:59:50,036 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:59:50,037 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:59:50,037 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:59:50,037 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:59:50,050 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-27 23:59:50,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-27 23:59:50,055 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:59:50,055 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-27 23:59:50,056 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:59:50,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:59:50,060 INFO L82 PathProgramCache]: Analyzing trace with hash 30108868, now seen corresponding path program 1 times [2019-11-27 23:59:50,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:59:50,068 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799528530] [2019-11-27 23:59:50,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:59:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:59:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:59:50,154 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799528530] [2019-11-27 23:59:50,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:59:50,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:59:50,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494360801] [2019-11-27 23:59:50,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:59:50,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:59:50,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:59:50,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:59:50,177 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-27 23:59:50,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:59:50,191 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-11-27 23:59:50,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:59:50,192 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-27 23:59:50,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:59:50,199 INFO L225 Difference]: With dead ends: 18 [2019-11-27 23:59:50,199 INFO L226 Difference]: Without dead ends: 8 [2019-11-27 23:59:50,201 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 [2019-11-27 23:59:50,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-27 23:59:50,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-27 23:59:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-27 23:59:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-27 23:59:50,233 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-11-27 23:59:50,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:59:50,234 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-27 23:59:50,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:59:50,234 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-11-27 23:59:50,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-27 23:59:50,235 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:59:50,235 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-27 23:59:50,236 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:59:50,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:59:50,236 INFO L82 PathProgramCache]: Analyzing trace with hash 29781167, now seen corresponding path program 1 times [2019-11-27 23:59:50,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:59:50,237 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683600512] [2019-11-27 23:59:50,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:59:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:59:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:59:50,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683600512] [2019-11-27 23:59:50,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:59:50,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:59:50,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112184705] [2019-11-27 23:59:50,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 23:59:50,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:59:50,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 23:59:50,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 23:59:50,280 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 3 states. [2019-11-27 23:59:50,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:59:50,360 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2019-11-27 23:59:50,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 23:59:50,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-27 23:59:50,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:59:50,362 INFO L225 Difference]: With dead ends: 18 [2019-11-27 23:59:50,362 INFO L226 Difference]: Without dead ends: 11 [2019-11-27 23:59:50,363 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 [2019-11-27 23:59:50,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-27 23:59:50,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-11-27 23:59:50,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-27 23:59:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-27 23:59:50,368 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2019-11-27 23:59:50,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:59:50,368 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-27 23:59:50,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 23:59:50,369 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-27 23:59:50,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-27 23:59:50,369 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:59:50,369 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:59:50,372 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:59:50,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:59:50,373 INFO L82 PathProgramCache]: Analyzing trace with hash -308490948, now seen corresponding path program 1 times [2019-11-27 23:59:50,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:59:50,373 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087713334] [2019-11-27 23:59:50,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:59:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:59:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:59:50,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087713334] [2019-11-27 23:59:50,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666035193] [2019-11-27 23:59:50,500 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 [2019-11-27 23:59:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:59:50,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:59:50,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:59:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:59:50,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-27 23:59:50,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2019-11-27 23:59:50,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472413538] [2019-11-27 23:59:50,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:59:50,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:59:50,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:59:50,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:59:50,633 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2019-11-27 23:59:50,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:59:50,679 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-11-27 23:59:50,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:59:50,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-27 23:59:50,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:59:50,681 INFO L225 Difference]: With dead ends: 18 [2019-11-27 23:59:50,681 INFO L226 Difference]: Without dead ends: 14 [2019-11-27 23:59:50,681 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:59:50,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-27 23:59:50,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2019-11-27 23:59:50,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-27 23:59:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-11-27 23:59:50,686 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2019-11-27 23:59:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:59:50,686 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-27 23:59:50,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:59:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-11-27 23:59:50,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:59:50,687 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:59:50,688 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:59:50,892 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:59:50,892 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:59:50,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:59:50,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1722534195, now seen corresponding path program 1 times [2019-11-27 23:59:50,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:59:50,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34230954] [2019-11-27 23:59:50,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:59:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:59:50,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:59:50,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34230954] [2019-11-27 23:59:50,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127618467] [2019-11-27 23:59:50,946 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:59:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:59:50,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:59:50,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:59:50,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:59:50,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 23:59:50,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-27 23:59:50,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595220736] [2019-11-27 23:59:50,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:59:50,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:59:50,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:59:50,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:59:50,986 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 4 states. [2019-11-27 23:59:51,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:59:51,025 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-11-27 23:59:51,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:59:51,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-27 23:59:51,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:59:51,028 INFO L225 Difference]: With dead ends: 25 [2019-11-27 23:59:51,028 INFO L226 Difference]: Without dead ends: 16 [2019-11-27 23:59:51,029 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 [2019-11-27 23:59:51,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-27 23:59:51,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-27 23:59:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-27 23:59:51,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-11-27 23:59:51,034 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2019-11-27 23:59:51,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:59:51,034 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-11-27 23:59:51,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:59:51,035 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-11-27 23:59:51,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:59:51,035 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:59:51,037 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2019-11-27 23:59:51,237 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:59:51,238 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:59:51,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:59:51,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1169242522, now seen corresponding path program 2 times [2019-11-27 23:59:51,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:59:51,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411719004] [2019-11-27 23:59:51,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:59:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:59:51,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:59:51,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411719004] [2019-11-27 23:59:51,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357851201] [2019-11-27 23:59:51,291 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 [2019-11-27 23:59:51,340 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-27 23:59:51,341 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-27 23:59:51,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-27 23:59:51,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:59:51,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:59:51,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 23:59:51,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-11-27 23:59:51,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349274550] [2019-11-27 23:59:51,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:59:51,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:59:51,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:59:51,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:59:51,355 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 6 states. [2019-11-27 23:59:51,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:59:51,397 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-11-27 23:59:51,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:59:51,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-27 23:59:51,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:59:51,398 INFO L225 Difference]: With dead ends: 29 [2019-11-27 23:59:51,398 INFO L226 Difference]: Without dead ends: 20 [2019-11-27 23:59:51,399 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:59:51,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-27 23:59:51,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-27 23:59:51,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-27 23:59:51,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-27 23:59:51,404 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2019-11-27 23:59:51,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:59:51,405 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-27 23:59:51,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:59:51,405 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-27 23:59:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-27 23:59:51,406 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:59:51,406 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1] [2019-11-27 23:59:51,607 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:59:51,608 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:59:51,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:59:51,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1635395501, now seen corresponding path program 3 times [2019-11-27 23:59:51,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:59:51,611 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907193634] [2019-11-27 23:59:51,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:59:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:59:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:59:51,694 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907193634] [2019-11-27 23:59:51,694 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700106912] [2019-11-27 23:59:51,694 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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) [2019-11-27 23:59:51,726 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-27 23:59:51,726 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-27 23:59:51,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-27 23:59:51,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:59:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-27 23:59:51,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 23:59:51,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-27 23:59:51,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39076138] [2019-11-27 23:59:51,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-27 23:59:51,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:59:51,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-27 23:59:51,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-27 23:59:51,752 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 7 states. [2019-11-27 23:59:51,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:59:51,799 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-11-27 23:59:51,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-27 23:59:51,800 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-11-27 23:59:51,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:59:51,802 INFO L225 Difference]: With dead ends: 27 [2019-11-27 23:59:51,803 INFO L226 Difference]: Without dead ends: 23 [2019-11-27 23:59:51,803 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-27 23:59:51,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-27 23:59:51,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-11-27 23:59:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-27 23:59:51,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-11-27 23:59:51,808 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 17 [2019-11-27 23:59:51,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:59:51,809 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-11-27 23:59:51,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-27 23:59:51,809 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-11-27 23:59:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-27 23:59:51,810 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:59:51,810 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1] [2019-11-27 23:59:52,014 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:59:52,015 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:59:52,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:59:52,015 INFO L82 PathProgramCache]: Analyzing trace with hash -445384004, now seen corresponding path program 4 times [2019-11-27 23:59:52,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:59:52,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417920426] [2019-11-27 23:59:52,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:59:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:59:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:59:52,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417920426] [2019-11-27 23:59:52,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369544089] [2019-11-27 23:59:52,129 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:59:52,158 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-27 23:59:52,158 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-27 23:59:52,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-27 23:59:52,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:59:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:59:52,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 23:59:52,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2019-11-27 23:59:52,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188586134] [2019-11-27 23:59:52,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-27 23:59:52,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:59:52,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-27 23:59:52,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-27 23:59:52,201 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 10 states. [2019-11-27 23:59:52,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:59:52,262 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-11-27 23:59:52,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-27 23:59:52,262 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-11-27 23:59:52,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:59:52,263 INFO L225 Difference]: With dead ends: 34 [2019-11-27 23:59:52,263 INFO L226 Difference]: Without dead ends: 30 [2019-11-27 23:59:52,264 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-27 23:59:52,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-27 23:59:52,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-27 23:59:52,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-27 23:59:52,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-27 23:59:52,270 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 20 [2019-11-27 23:59:52,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:59:52,270 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-27 23:59:52,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-27 23:59:52,271 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-27 23:59:52,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-27 23:59:52,272 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:59:52,272 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1] [2019-11-27 23:59:52,473 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:59:52,473 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:59:52,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:59:52,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1861594387, now seen corresponding path program 5 times [2019-11-27 23:59:52,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:59:52,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422908256] [2019-11-27 23:59:52,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:59:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:59:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:59:52,530 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:59:52,530 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:59:52,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:59:52 BoogieIcfgContainer [2019-11-27 23:59:52,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:59:52,552 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:59:52,552 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:59:52,552 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:59:52,553 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:59:49" (3/4) ... [2019-11-27 23:59:52,555 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:59:52,604 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:59:52,604 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:59:52,607 INFO L168 Benchmark]: Toolchain (without parser) took 3196.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 960.4 MB in the beginning and 989.9 MB in the end (delta: -29.5 MB). Peak memory consumption was 116.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:59:52,607 INFO L168 Benchmark]: CDTParser took 0.24 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. [2019-11-27 23:59:52,608 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.29 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:59:52,609 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:59:52,609 INFO L168 Benchmark]: Boogie Preprocessor took 15.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:59:52,610 INFO L168 Benchmark]: RCFGBuilder took 213.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:59:52,610 INFO L168 Benchmark]: TraceAbstraction took 2567.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 989.9 MB in the end (delta: 132.9 MB). Peak memory consumption was 132.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:59:52,611 INFO L168 Benchmark]: Witness Printer took 52.48 ms. Allocated memory is still 1.2 GB. Free memory is still 989.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:59:52,614 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 247.29 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 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 95.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 213.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2567.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 989.9 MB in the end (delta: 132.9 MB). Peak memory consumption was 132.9 MB. Max. memory is 11.5 GB. * Witness Printer took 52.48 ms. Allocated memory is still 1.2 GB. Free memory is still 989.9 MB. There was no memory consumed. 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, sn=0; [L13] i=1 [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=8 [L14] COND TRUE i<4 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND TRUE i<=8 [L14] COND FALSE !(i<4) [L13] i++ [L13] COND FALSE !(i<=8) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.4s, OverallIterations: 8, TraceHistogramMax: 8, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 46 SDslu, 57 SDs, 0 SdLazy, 113 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 8 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 179 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 4378 SizeOfPredicates, 4 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 41/150 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...