./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum04-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer --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 0.1.24-678e011 [2019-11-20 03:50:05,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 03:50:05,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 03:50:05,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 03:50:05,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 03:50:05,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 03:50:05,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 03:50:05,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 03:50:05,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 03:50:05,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 03:50:05,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 03:50:05,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 03:50:05,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 03:50:05,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 03:50:05,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 03:50:05,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 03:50:05,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 03:50:05,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 03:50:05,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 03:50:05,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 03:50:05,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 03:50:05,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 03:50:05,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 03:50:05,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 03:50:05,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 03:50:05,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 03:50:05,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 03:50:05,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 03:50:05,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 03:50:05,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 03:50:05,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 03:50:05,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 03:50:05,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 03:50:05,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 03:50:05,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 03:50:05,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 03:50:05,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 03:50:05,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 03:50:05,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 03:50:05,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 03:50:05,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 03:50:05,489 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 03:50:05,513 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 03:50:05,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 03:50:05,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 03:50:05,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 03:50:05,525 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 03:50:05,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 03:50:05,525 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 03:50:05,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 03:50:05,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 03:50:05,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 03:50:05,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 03:50:05,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 03:50:05,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 03:50:05,527 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 03:50:05,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 03:50:05,528 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 03:50:05,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 03:50:05,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 03:50:05,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 03:50:05,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 03:50:05,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 03:50:05,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 03:50:05,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 03:50:05,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 03:50:05,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 03:50:05,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 03:50:05,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 03:50:05,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 03:50:05,531 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer 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 [2019-11-20 03:50:05,698 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 03:50:05,714 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 03:50:05,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 03:50:05,719 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 03:50:05,720 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 03:50:05,721 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/../../sv-benchmarks/c/loops/sum04-1.i [2019-11-20 03:50:05,785 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/data/d1b028fbc/32d112cc64a04e3d8f7f89c63e11b80f/FLAG0c425cabe [2019-11-20 03:50:06,169 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 03:50:06,170 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/sv-benchmarks/c/loops/sum04-1.i [2019-11-20 03:50:06,175 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/data/d1b028fbc/32d112cc64a04e3d8f7f89c63e11b80f/FLAG0c425cabe [2019-11-20 03:50:06,601 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/data/d1b028fbc/32d112cc64a04e3d8f7f89c63e11b80f [2019-11-20 03:50:06,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 03:50:06,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 03:50:06,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 03:50:06,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 03:50:06,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 03:50:06,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:50:06" (1/1) ... [2019-11-20 03:50:06,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61dceabe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:50:06, skipping insertion in model container [2019-11-20 03:50:06,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:50:06" (1/1) ... [2019-11-20 03:50:06,626 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 03:50:06,640 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 03:50:06,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:50:06,771 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 03:50:06,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:50:06,866 INFO L192 MainTranslator]: Completed translation [2019-11-20 03:50:06,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:50:06 WrapperNode [2019-11-20 03:50:06,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 03:50:06,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 03:50:06,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 03:50:06,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 03:50:06,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:50:06" (1/1) ... [2019-11-20 03:50:06,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:50:06" (1/1) ... [2019-11-20 03:50:06,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 03:50:06,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 03:50:06,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 03:50:06,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 03:50:06,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:50:06" (1/1) ... [2019-11-20 03:50:06,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:50:06" (1/1) ... [2019-11-20 03:50:06,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:50:06" (1/1) ... [2019-11-20 03:50:06,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:50:06" (1/1) ... [2019-11-20 03:50:06,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:50:06" (1/1) ... [2019-11-20 03:50:06,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:50:06" (1/1) ... [2019-11-20 03:50:06,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:50:06" (1/1) ... [2019-11-20 03:50:06,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 03:50:06,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 03:50:06,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 03:50:06,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 03:50:06,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:50:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/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 [2019-11-20 03:50:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 03:50:06,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 03:50:07,142 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 03:50:07,142 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 03:50:07,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:50:07 BoogieIcfgContainer [2019-11-20 03:50:07,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 03:50:07,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 03:50:07,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 03:50:07,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 03:50:07,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 03:50:06" (1/3) ... [2019-11-20 03:50:07,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f2861e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:50:07, skipping insertion in model container [2019-11-20 03:50:07,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:50:06" (2/3) ... [2019-11-20 03:50:07,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f2861e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:50:07, skipping insertion in model container [2019-11-20 03:50:07,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:50:07" (3/3) ... [2019-11-20 03:50:07,153 INFO L109 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2019-11-20 03:50:07,162 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 03:50:07,168 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 03:50:07,182 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 03:50:07,207 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 03:50:07,207 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 03:50:07,207 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 03:50:07,207 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 03:50:07,208 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 03:50:07,208 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 03:50:07,208 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 03:50:07,208 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 03:50:07,221 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-20 03:50:07,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 03:50:07,225 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:50:07,225 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 03:50:07,226 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:50:07,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:50:07,230 INFO L82 PathProgramCache]: Analyzing trace with hash 30108868, now seen corresponding path program 1 times [2019-11-20 03:50:07,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:50:07,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924703338] [2019-11-20 03:50:07,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:50:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:50:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:50:07,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924703338] [2019-11-20 03:50:07,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:50:07,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 03:50:07,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783142926] [2019-11-20 03:50:07,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 03:50:07,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:50:07,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 03:50:07,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 03:50:07,348 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-20 03:50:07,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:50:07,364 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-11-20 03:50:07,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 03:50:07,365 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-20 03:50:07,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:50:07,377 INFO L225 Difference]: With dead ends: 18 [2019-11-20 03:50:07,378 INFO L226 Difference]: Without dead ends: 8 [2019-11-20 03:50:07,381 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 [2019-11-20 03:50:07,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-20 03:50:07,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 03:50:07,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 03:50:07,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-20 03:50:07,414 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-11-20 03:50:07,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:50:07,415 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-20 03:50:07,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 03:50:07,415 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-11-20 03:50:07,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 03:50:07,416 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:50:07,416 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 03:50:07,417 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:50:07,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:50:07,418 INFO L82 PathProgramCache]: Analyzing trace with hash 29781167, now seen corresponding path program 1 times [2019-11-20 03:50:07,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:50:07,419 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643074171] [2019-11-20 03:50:07,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:50:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:50:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:50:07,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643074171] [2019-11-20 03:50:07,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:50:07,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 03:50:07,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804264709] [2019-11-20 03:50:07,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 03:50:07,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:50:07,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 03:50:07,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 03:50:07,465 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 3 states. [2019-11-20 03:50:07,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:50:07,553 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2019-11-20 03:50:07,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 03:50:07,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-20 03:50:07,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:50:07,554 INFO L225 Difference]: With dead ends: 18 [2019-11-20 03:50:07,554 INFO L226 Difference]: Without dead ends: 11 [2019-11-20 03:50:07,555 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 [2019-11-20 03:50:07,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-20 03:50:07,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-11-20 03:50:07,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-20 03:50:07,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-20 03:50:07,558 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2019-11-20 03:50:07,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:50:07,558 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-20 03:50:07,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 03:50:07,559 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-20 03:50:07,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 03:50:07,559 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:50:07,559 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:50:07,560 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:50:07,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:50:07,560 INFO L82 PathProgramCache]: Analyzing trace with hash -308490948, now seen corresponding path program 1 times [2019-11-20 03:50:07,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:50:07,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279344021] [2019-11-20 03:50:07,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:50:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:50:07,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:50:07,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279344021] [2019-11-20 03:50:07,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238913888] [2019-11-20 03:50:07,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/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 [2019-11-20 03:50:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:50:07,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 03:50:07,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:50:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:50:07,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 03:50:07,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2019-11-20 03:50:07,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932392677] [2019-11-20 03:50:07,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 03:50:07,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:50:07,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 03:50:07,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 03:50:07,749 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2019-11-20 03:50:07,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:50:07,777 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-11-20 03:50:07,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 03:50:07,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-20 03:50:07,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:50:07,778 INFO L225 Difference]: With dead ends: 18 [2019-11-20 03:50:07,778 INFO L226 Difference]: Without dead ends: 14 [2019-11-20 03:50:07,779 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 03:50:07,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-20 03:50:07,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2019-11-20 03:50:07,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 03:50:07,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-11-20 03:50:07,782 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2019-11-20 03:50:07,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:50:07,782 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-20 03:50:07,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 03:50:07,782 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-11-20 03:50:07,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 03:50:07,783 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:50:07,783 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:50:07,987 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:50:07,988 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:50:07,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:50:07,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1722534195, now seen corresponding path program 1 times [2019-11-20 03:50:07,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:50:07,989 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405249720] [2019-11-20 03:50:07,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:50:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:50:08,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:50:08,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405249720] [2019-11-20 03:50:08,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296202147] [2019-11-20 03:50:08,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/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 [2019-11-20 03:50:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:50:08,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 03:50:08,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:50:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:50:08,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 03:50:08,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-20 03:50:08,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327715026] [2019-11-20 03:50:08,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 03:50:08,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:50:08,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 03:50:08,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 03:50:08,052 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 4 states. [2019-11-20 03:50:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:50:08,077 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-11-20 03:50:08,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 03:50:08,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-20 03:50:08,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:50:08,078 INFO L225 Difference]: With dead ends: 25 [2019-11-20 03:50:08,078 INFO L226 Difference]: Without dead ends: 16 [2019-11-20 03:50:08,079 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 [2019-11-20 03:50:08,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-20 03:50:08,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-20 03:50:08,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 03:50:08,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-11-20 03:50:08,083 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2019-11-20 03:50:08,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:50:08,083 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-11-20 03:50:08,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 03:50:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-11-20 03:50:08,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 03:50:08,084 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:50:08,084 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2019-11-20 03:50:08,285 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:50:08,285 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:50:08,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:50:08,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1169242522, now seen corresponding path program 2 times [2019-11-20 03:50:08,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:50:08,286 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238658663] [2019-11-20 03:50:08,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:50:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:50:08,345 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:50:08,345 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238658663] [2019-11-20 03:50:08,345 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782332451] [2019-11-20 03:50:08,346 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/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 [2019-11-20 03:50:08,379 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 03:50:08,379 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 03:50:08,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:50:08,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:50:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:50:08,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 03:50:08,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-11-20 03:50:08,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708276671] [2019-11-20 03:50:08,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 03:50:08,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:50:08,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 03:50:08,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 03:50:08,388 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 6 states. [2019-11-20 03:50:08,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:50:08,457 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-11-20 03:50:08,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 03:50:08,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-20 03:50:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:50:08,459 INFO L225 Difference]: With dead ends: 29 [2019-11-20 03:50:08,459 INFO L226 Difference]: Without dead ends: 20 [2019-11-20 03:50:08,459 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 [2019-11-20 03:50:08,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-20 03:50:08,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-20 03:50:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-20 03:50:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-20 03:50:08,463 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2019-11-20 03:50:08,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:50:08,464 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-20 03:50:08,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 03:50:08,464 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-20 03:50:08,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 03:50:08,464 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:50:08,465 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1] [2019-11-20 03:50:08,668 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:50:08,668 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:50:08,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:50:08,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1635395501, now seen corresponding path program 3 times [2019-11-20 03:50:08,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:50:08,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940674474] [2019-11-20 03:50:08,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:50:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:50:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:50:08,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940674474] [2019-11-20 03:50:08,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398143751] [2019-11-20 03:50:08,731 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:50:08,761 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-20 03:50:08,761 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 03:50:08,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:50:08,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:50:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-20 03:50:08,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 03:50:08,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-20 03:50:08,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244879225] [2019-11-20 03:50:08,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 03:50:08,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:50:08,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 03:50:08,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 03:50:08,773 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 7 states. [2019-11-20 03:50:08,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:50:08,837 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-11-20 03:50:08,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 03:50:08,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-11-20 03:50:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:50:08,839 INFO L225 Difference]: With dead ends: 27 [2019-11-20 03:50:08,839 INFO L226 Difference]: Without dead ends: 23 [2019-11-20 03:50:08,840 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 [2019-11-20 03:50:08,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-20 03:50:08,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-11-20 03:50:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-20 03:50:08,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-11-20 03:50:08,855 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 17 [2019-11-20 03:50:08,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:50:08,855 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-11-20 03:50:08,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 03:50:08,855 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-11-20 03:50:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 03:50:08,857 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:50:08,857 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1] [2019-11-20 03:50:09,066 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:50:09,067 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:50:09,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:50:09,067 INFO L82 PathProgramCache]: Analyzing trace with hash -445384004, now seen corresponding path program 4 times [2019-11-20 03:50:09,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:50:09,067 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811268706] [2019-11-20 03:50:09,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:50:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:50:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:50:09,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811268706] [2019-11-20 03:50:09,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591979612] [2019-11-20 03:50:09,149 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/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 [2019-11-20 03:50:09,178 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 03:50:09,178 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 03:50:09,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 03:50:09,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:50:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:50:09,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 03:50:09,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2019-11-20 03:50:09,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380558999] [2019-11-20 03:50:09,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 03:50:09,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:50:09,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 03:50:09,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-20 03:50:09,238 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 10 states. [2019-11-20 03:50:09,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:50:09,297 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-11-20 03:50:09,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 03:50:09,299 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-11-20 03:50:09,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:50:09,300 INFO L225 Difference]: With dead ends: 34 [2019-11-20 03:50:09,300 INFO L226 Difference]: Without dead ends: 30 [2019-11-20 03:50:09,300 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-20 03:50:09,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-20 03:50:09,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-20 03:50:09,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 03:50:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-20 03:50:09,308 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 20 [2019-11-20 03:50:09,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:50:09,309 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-20 03:50:09,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 03:50:09,309 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-20 03:50:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-20 03:50:09,310 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:50:09,310 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1] [2019-11-20 03:50:09,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:50:09,514 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 03:50:09,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:50:09,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1861594387, now seen corresponding path program 5 times [2019-11-20 03:50:09,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:50:09,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647401658] [2019-11-20 03:50:09,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:50:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:50:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:50:09,554 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:50:09,555 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 03:50:09,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 03:50:09 BoogieIcfgContainer [2019-11-20 03:50:09,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 03:50:09,574 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 03:50:09,574 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 03:50:09,574 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 03:50:09,575 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:50:07" (3/4) ... [2019-11-20 03:50:09,576 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 03:50:09,620 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_14e72734-9ba2-43e7-9357-70873fc628e5/bin/uautomizer/witness.graphml [2019-11-20 03:50:09,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 03:50:09,622 INFO L168 Benchmark]: Toolchain (without parser) took 3016.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.2 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -103.8 MB). Peak memory consumption was 94.3 MB. Max. memory is 11.5 GB. [2019-11-20 03:50:09,623 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:50:09,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.2 MB). Free memory was 950.0 MB in the beginning and 1.2 GB in the end (delta: -241.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-20 03:50:09,624 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.71 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. [2019-11-20 03:50:09,624 INFO L168 Benchmark]: Boogie Preprocessor took 19.49 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. [2019-11-20 03:50:09,625 INFO L168 Benchmark]: RCFGBuilder took 218.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-20 03:50:09,625 INFO L168 Benchmark]: TraceAbstraction took 2429.63 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: 120.9 MB). Peak memory consumption was 120.9 MB. Max. memory is 11.5 GB. [2019-11-20 03:50:09,625 INFO L168 Benchmark]: Witness Printer took 46.38 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. [2019-11-20 03:50:09,628 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 261.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.2 MB). Free memory was 950.0 MB in the beginning and 1.2 GB in the end (delta: -241.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.71 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. * Boogie Preprocessor took 19.49 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 218.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2429.63 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: 120.9 MB). Peak memory consumption was 120.9 MB. Max. memory is 11.5 GB. * Witness Printer took 46.38 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. * 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: 2.3s, 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, 0.4s 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...