./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/cggmp2005b.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/loop-lit/cggmp2005b.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 7408fe5ba42f5c474832c90e26f3e7ef2342554c ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 17:06:35,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:06:35,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:06:35,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:06:35,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:06:35,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:06:35,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:06:35,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:06:35,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:06:35,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:06:35,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:06:35,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:06:35,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:06:35,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:06:35,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:06:35,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:06:35,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:06:35,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:06:35,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:06:35,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:06:35,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:06:35,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:06:35,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:06:35,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:06:35,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:06:35,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:06:35,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:06:35,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:06:35,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:06:35,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:06:35,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:06:35,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:06:35,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:06:35,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:06:35,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:06:35,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:06:35,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:06:35,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:06:35,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:06:35,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:06:35,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:06:35,969 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:06:35,997 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:06:35,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:06:36,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:06:36,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:06:36,001 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:06:36,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:06:36,002 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:06:36,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:06:36,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:06:36,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:06:36,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:06:36,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:06:36,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:06:36,005 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:06:36,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:06:36,005 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:06:36,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:06:36,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:06:36,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:06:36,007 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:06:36,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:06:36,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:06:36,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:06:36,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:06:36,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:06:36,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:06:36,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:06:36,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:06:36,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:06:36,009 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 -> 7408fe5ba42f5c474832c90e26f3e7ef2342554c [2019-11-28 17:06:36,309 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:06:36,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:06:36,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:06:36,333 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:06:36,334 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:06:36,335 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/cggmp2005b.i [2019-11-28 17:06:36,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dae305848/14a4d919993b4639bc1d2995ac7f862a/FLAGe6ff1e3a7 [2019-11-28 17:06:36,819 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:06:36,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/cggmp2005b.i [2019-11-28 17:06:36,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dae305848/14a4d919993b4639bc1d2995ac7f862a/FLAGe6ff1e3a7 [2019-11-28 17:06:37,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dae305848/14a4d919993b4639bc1d2995ac7f862a [2019-11-28 17:06:37,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:06:37,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:06:37,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:06:37,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:06:37,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:06:37,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:37" (1/1) ... [2019-11-28 17:06:37,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47670154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:37, skipping insertion in model container [2019-11-28 17:06:37,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:37" (1/1) ... [2019-11-28 17:06:37,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:06:37,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:06:37,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:06:37,485 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:06:37,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:06:37,517 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:06:37,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:37 WrapperNode [2019-11-28 17:06:37,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:06:37,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:06:37,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:06:37,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:06:37,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:37" (1/1) ... [2019-11-28 17:06:37,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:37" (1/1) ... [2019-11-28 17:06:37,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:06:37,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:06:37,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:06:37,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:06:37,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:37" (1/1) ... [2019-11-28 17:06:37,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:37" (1/1) ... [2019-11-28 17:06:37,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:37" (1/1) ... [2019-11-28 17:06:37,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:37" (1/1) ... [2019-11-28 17:06:37,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:37" (1/1) ... [2019-11-28 17:06:37,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:37" (1/1) ... [2019-11-28 17:06:37,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:37" (1/1) ... [2019-11-28 17:06:37,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:06:37,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:06:37,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:06:37,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:06:37,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:37" (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 17:06:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:06:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:06:37,887 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:06:37,888 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-28 17:06:37,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:37 BoogieIcfgContainer [2019-11-28 17:06:37,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:06:37,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:06:37,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:06:37,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:06:37,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:06:37" (1/3) ... [2019-11-28 17:06:37,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4afb68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:37, skipping insertion in model container [2019-11-28 17:06:37,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:37" (2/3) ... [2019-11-28 17:06:37,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4afb68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:37, skipping insertion in model container [2019-11-28 17:06:37,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:37" (3/3) ... [2019-11-28 17:06:37,897 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2019-11-28 17:06:37,908 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:06:37,915 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:06:37,928 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:06:37,953 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:06:37,954 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:06:37,954 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:06:37,954 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:06:37,954 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:06:37,954 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:06:37,955 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:06:37,955 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:06:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-28 17:06:37,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 17:06:37,976 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:37,977 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 17:06:37,978 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:37,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:37,984 INFO L82 PathProgramCache]: Analyzing trace with hash 30693764, now seen corresponding path program 1 times [2019-11-28 17:06:37,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:37,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823729166] [2019-11-28 17:06:37,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:38,081 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 17:06:38,081 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823729166] [2019-11-28 17:06:38,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:06:38,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:06:38,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006762798] [2019-11-28 17:06:38,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 17:06:38,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:38,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 17:06:38,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:06:38,108 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2019-11-28 17:06:38,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:38,128 INFO L93 Difference]: Finished difference Result 25 states and 37 transitions. [2019-11-28 17:06:38,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 17:06:38,129 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-28 17:06:38,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:38,140 INFO L225 Difference]: With dead ends: 25 [2019-11-28 17:06:38,140 INFO L226 Difference]: Without dead ends: 9 [2019-11-28 17:06:38,144 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 17:06:38,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-28 17:06:38,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-28 17:06:38,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 17:06:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2019-11-28 17:06:38,180 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 5 [2019-11-28 17:06:38,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:38,181 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-11-28 17:06:38,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 17:06:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2019-11-28 17:06:38,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 17:06:38,181 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:38,182 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 17:06:38,182 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:38,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:38,183 INFO L82 PathProgramCache]: Analyzing trace with hash 29829825, now seen corresponding path program 1 times [2019-11-28 17:06:38,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:38,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112386427] [2019-11-28 17:06:38,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:38,256 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 17:06:38,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112386427] [2019-11-28 17:06:38,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:06:38,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:06:38,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944804986] [2019-11-28 17:06:38,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:06:38,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:38,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:06:38,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:06:38,263 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 3 states. [2019-11-28 17:06:38,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:38,310 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-11-28 17:06:38,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:06:38,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-28 17:06:38,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:38,311 INFO L225 Difference]: With dead ends: 14 [2019-11-28 17:06:38,312 INFO L226 Difference]: Without dead ends: 10 [2019-11-28 17:06:38,313 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 17:06:38,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-28 17:06:38,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-28 17:06:38,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 17:06:38,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-28 17:06:38,317 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2019-11-28 17:06:38,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:38,317 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-28 17:06:38,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:06:38,318 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2019-11-28 17:06:38,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 17:06:38,318 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:38,319 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:38,319 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:38,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:38,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1133380143, now seen corresponding path program 1 times [2019-11-28 17:06:38,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:38,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421081214] [2019-11-28 17:06:38,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:38,364 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 17:06:38,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421081214] [2019-11-28 17:06:38,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:06:38,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:06:38,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345733630] [2019-11-28 17:06:38,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:06:38,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:38,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:06:38,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:06:38,367 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2019-11-28 17:06:38,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:38,376 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2019-11-28 17:06:38,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:06:38,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 17:06:38,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:38,378 INFO L225 Difference]: With dead ends: 19 [2019-11-28 17:06:38,378 INFO L226 Difference]: Without dead ends: 11 [2019-11-28 17:06:38,378 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 17:06:38,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-28 17:06:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-28 17:06:38,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 17:06:38,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-28 17:06:38,382 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2019-11-28 17:06:38,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:38,382 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-28 17:06:38,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:06:38,383 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-11-28 17:06:38,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 17:06:38,383 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:38,383 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:38,384 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:38,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:38,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1245368368, now seen corresponding path program 1 times [2019-11-28 17:06:38,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:38,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763068185] [2019-11-28 17:06:38,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:38,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 17:06:38,432 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763068185] [2019-11-28 17:06:38,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296231645] [2019-11-28 17:06:38,433 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 17:06:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:38,462 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 17:06:38,468 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:06:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-28 17:06:38,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:06:38,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-28 17:06:38,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109068900] [2019-11-28 17:06:38,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 17:06:38,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:38,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 17:06:38,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 17:06:38,493 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 4 states. [2019-11-28 17:06:38,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:38,534 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2019-11-28 17:06:38,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 17:06:38,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 17:06:38,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:38,535 INFO L225 Difference]: With dead ends: 19 [2019-11-28 17:06:38,535 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 17:06:38,536 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 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 17:06:38,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 17:06:38,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-28 17:06:38,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 17:06:38,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-11-28 17:06:38,541 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2019-11-28 17:06:38,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:38,541 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-28 17:06:38,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 17:06:38,542 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2019-11-28 17:06:38,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 17:06:38,542 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:38,543 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 17:06:38,743 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:06:38,744 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:38,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:38,745 INFO L82 PathProgramCache]: Analyzing trace with hash 265611198, now seen corresponding path program 2 times [2019-11-28 17:06:38,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:38,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962566597] [2019-11-28 17:06:38,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:06:38,819 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962566597] [2019-11-28 17:06:38,820 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832501087] [2019-11-28 17:06:38,820 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 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 [2019-11-28 17:06:38,862 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 17:06:38,862 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:06:38,863 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 17:06:38,864 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:06:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-28 17:06:38,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:06:38,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-11-28 17:06:38,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476902851] [2019-11-28 17:06:38,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 17:06:38,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:38,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 17:06:38,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-28 17:06:38,926 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand 7 states. [2019-11-28 17:06:38,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:38,974 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2019-11-28 17:06:38,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 17:06:38,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-28 17:06:38,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:38,976 INFO L225 Difference]: With dead ends: 27 [2019-11-28 17:06:38,976 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 17:06:38,977 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-28 17:06:38,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 17:06:38,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-28 17:06:38,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 17:06:38,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-11-28 17:06:38,982 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 14 [2019-11-28 17:06:38,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:38,983 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-11-28 17:06:38,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 17:06:38,983 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2019-11-28 17:06:38,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 17:06:38,984 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:06:38,985 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-28 17:06:39,185 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:06:39,186 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:06:39,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:06:39,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1154356925, now seen corresponding path program 3 times [2019-11-28 17:06:39,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:06:39,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144560379] [2019-11-28 17:06:39,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:06:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:06:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-28 17:06:39,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144560379] [2019-11-28 17:06:39,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:06:39,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 17:06:39,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615912147] [2019-11-28 17:06:39,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 17:06:39,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:06:39,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 17:06:39,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 17:06:39,246 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2019-11-28 17:06:39,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:06:39,271 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2019-11-28 17:06:39,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 17:06:39,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-28 17:06:39,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:06:39,272 INFO L225 Difference]: With dead ends: 24 [2019-11-28 17:06:39,272 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:06:39,272 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 17:06:39,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:06:39,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:06:39,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:06:39,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:06:39,274 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-11-28 17:06:39,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:06:39,274 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:06:39,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 17:06:39,274 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:06:39,275 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:06:39,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 17:06:39,352 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 17:06:39,352 INFO L242 CegarLoopResult]: At program point L21-2(lines 21 23) the Hoare annotation is: (= ULTIMATE.start_main_~k~0 4) [2019-11-28 17:06:39,352 INFO L242 CegarLoopResult]: At program point L21-3(lines 15 24) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~i~0 0) (<= (+ ULTIMATE.start_main_~j~0 100) ULTIMATE.start_main_~i~0)) (= ULTIMATE.start_main_~k~0 4)) [2019-11-28 17:06:39,353 INFO L242 CegarLoopResult]: At program point L17-2(lines 17 19) the Hoare annotation is: (or (<= ULTIMATE.start_main_~i~0 1) (= ULTIMATE.start_main_~k~0 4)) [2019-11-28 17:06:39,353 INFO L246 CegarLoopResult]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2019-11-28 17:06:39,353 INFO L246 CegarLoopResult]: For program point L15-2(lines 15 24) no Hoare annotation was computed. [2019-11-28 17:06:39,353 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-28 17:06:39,353 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 17:06:39,353 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 17:06:39,354 INFO L249 CegarLoopResult]: At program point L26(lines 10 27) the Hoare annotation is: true [2019-11-28 17:06:39,354 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-28 17:06:39,355 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-28 17:06:39,355 INFO L249 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-28 17:06:39,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:06:39 BoogieIcfgContainer [2019-11-28 17:06:39,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:06:39,375 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:06:39,375 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:06:39,376 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:06:39,376 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:37" (3/4) ... [2019-11-28 17:06:39,380 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:06:39,392 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-28 17:06:39,393 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 17:06:39,441 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:06:39,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:06:39,444 INFO L168 Benchmark]: Toolchain (without parser) took 2209.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -85.6 MB). Peak memory consumption was 71.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:39,445 INFO L168 Benchmark]: CDTParser took 0.90 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 17:06:39,446 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.68 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. [2019-11-28 17:06:39,447 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 949.6 MB in the beginning and 1.2 GB in the end (delta: -204.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:39,447 INFO L168 Benchmark]: Boogie Preprocessor took 40.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:06:39,448 INFO L168 Benchmark]: RCFGBuilder took 231.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:39,449 INFO L168 Benchmark]: TraceAbstraction took 1484.42 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: 83.4 MB). Peak memory consumption was 83.4 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:39,449 INFO L168 Benchmark]: Witness Printer took 66.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 17:06:39,453 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90 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 283.68 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 97.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 949.6 MB in the beginning and 1.2 GB in the end (delta: -204.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 231.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1484.42 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: 83.4 MB). Peak memory consumption was 83.4 MB. Max. memory is 11.5 GB. * Witness Printer took 66.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: i <= 1 || k == 4 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (i <= 0 && j + 100 <= i) || k == 4 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: k == 4 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 5 SDslu, 63 SDs, 0 SdLazy, 32 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=5, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 16 NumberOfFragments, 25 HoareAnnotationTreeSize, 5 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 1622 SizeOfPredicates, 3 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 27/32 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 correct! Received shutdown request...