./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/simple_4-2.c --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_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/simple_4-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/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 f4456e2c68ec8b38c6ee81a801d6ec2920f9b858 ................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 11:08:57,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 11:08:57,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 11:08:57,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 11:08:57,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 11:08:57,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 11:08:57,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 11:08:57,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 11:08:57,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 11:08:57,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 11:08:57,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 11:08:57,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 11:08:57,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 11:08:57,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 11:08:57,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 11:08:57,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 11:08:57,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 11:08:57,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 11:08:57,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 11:08:57,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 11:08:57,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 11:08:57,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 11:08:57,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 11:08:57,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 11:08:57,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 11:08:57,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 11:08:57,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 11:08:57,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 11:08:57,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 11:08:57,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 11:08:57,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 11:08:57,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 11:08:57,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 11:08:57,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 11:08:57,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 11:08:57,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 11:08:57,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 11:08:57,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 11:08:57,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 11:08:57,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 11:08:57,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 11:08:57,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 11:08:57,477 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 11:08:57,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 11:08:57,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 11:08:57,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 11:08:57,483 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 11:08:57,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 11:08:57,484 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 11:08:57,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 11:08:57,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 11:08:57,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 11:08:57,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 11:08:57,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 11:08:57,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 11:08:57,487 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 11:08:57,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 11:08:57,487 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 11:08:57,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 11:08:57,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 11:08:57,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 11:08:57,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 11:08:57,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 11:08:57,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:08:57,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 11:08:57,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 11:08:57,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 11:08:57,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 11:08:57,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 11:08:57,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 11:08:57,491 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_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/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 -> f4456e2c68ec8b38c6ee81a801d6ec2920f9b858 [2019-11-20 11:08:57,664 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 11:08:57,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 11:08:57,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 11:08:57,691 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 11:08:57,691 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 11:08:57,692 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/bin/uautomizer/../../sv-benchmarks/c/loop-acceleration/simple_4-2.c [2019-11-20 11:08:57,771 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/bin/uautomizer/data/878113d48/dea6309b32bc456ea1c2bc667f2b6c5b/FLAGb19c3fd58 [2019-11-20 11:08:58,169 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 11:08:58,170 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/sv-benchmarks/c/loop-acceleration/simple_4-2.c [2019-11-20 11:08:58,177 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/bin/uautomizer/data/878113d48/dea6309b32bc456ea1c2bc667f2b6c5b/FLAGb19c3fd58 [2019-11-20 11:08:58,520 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/bin/uautomizer/data/878113d48/dea6309b32bc456ea1c2bc667f2b6c5b [2019-11-20 11:08:58,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 11:08:58,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 11:08:58,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 11:08:58,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 11:08:58,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 11:08:58,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:08:58" (1/1) ... [2019-11-20 11:08:58,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2ad257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:58, skipping insertion in model container [2019-11-20 11:08:58,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:08:58" (1/1) ... [2019-11-20 11:08:58,547 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 11:08:58,564 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 11:08:58,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:08:58,728 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 11:08:58,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:08:58,853 INFO L192 MainTranslator]: Completed translation [2019-11-20 11:08:58,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:58 WrapperNode [2019-11-20 11:08:58,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 11:08:58,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 11:08:58,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 11:08:58,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 11:08:58,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:58" (1/1) ... [2019-11-20 11:08:58,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:58" (1/1) ... [2019-11-20 11:08:58,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 11:08:58,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 11:08:58,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 11:08:58,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 11:08:58,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:58" (1/1) ... [2019-11-20 11:08:58,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:58" (1/1) ... [2019-11-20 11:08:58,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:58" (1/1) ... [2019-11-20 11:08:58,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:58" (1/1) ... [2019-11-20 11:08:58,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:58" (1/1) ... [2019-11-20 11:08:58,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:58" (1/1) ... [2019-11-20 11:08:58,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:58" (1/1) ... [2019-11-20 11:08:58,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 11:08:58,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 11:08:58,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 11:08:58,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 11:08:58,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/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 11:08:59,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 11:08:59,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 11:08:59,208 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 11:08:59,209 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 11:08:59,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:08:59 BoogieIcfgContainer [2019-11-20 11:08:59,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 11:08:59,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 11:08:59,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 11:08:59,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 11:08:59,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:08:58" (1/3) ... [2019-11-20 11:08:59,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a4678f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:08:59, skipping insertion in model container [2019-11-20 11:08:59,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:58" (2/3) ... [2019-11-20 11:08:59,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a4678f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:08:59, skipping insertion in model container [2019-11-20 11:08:59,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:08:59" (3/3) ... [2019-11-20 11:08:59,219 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_4-2.c [2019-11-20 11:08:59,228 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 11:08:59,234 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 11:08:59,247 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 11:08:59,284 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 11:08:59,285 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 11:08:59,285 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 11:08:59,285 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 11:08:59,285 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 11:08:59,285 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 11:08:59,286 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 11:08:59,286 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 11:08:59,305 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-20 11:08:59,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 11:08:59,312 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:08:59,313 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 11:08:59,313 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:08:59,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:08:59,320 INFO L82 PathProgramCache]: Analyzing trace with hash 29805000, now seen corresponding path program 1 times [2019-11-20 11:08:59,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:08:59,329 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263173826] [2019-11-20 11:08:59,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:08:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:08:59,545 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 11:08:59,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263173826] [2019-11-20 11:08:59,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:08:59,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 11:08:59,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208746082] [2019-11-20 11:08:59,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 11:08:59,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:08:59,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 11:08:59,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 11:08:59,567 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-20 11:08:59,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:08:59,617 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2019-11-20 11:08:59,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 11:08:59,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-20 11:08:59,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:08:59,626 INFO L225 Difference]: With dead ends: 17 [2019-11-20 11:08:59,626 INFO L226 Difference]: Without dead ends: 7 [2019-11-20 11:08:59,628 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 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 11:08:59,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-20 11:08:59,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-20 11:08:59,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 11:08:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-20 11:08:59,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-20 11:08:59,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:08:59,652 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-20 11:08:59,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 11:08:59,652 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-20 11:08:59,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 11:08:59,653 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:08:59,653 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-20 11:08:59,653 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:08:59,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:08:59,654 INFO L82 PathProgramCache]: Analyzing trace with hash 925620370, now seen corresponding path program 1 times [2019-11-20 11:08:59,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:08:59,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586490079] [2019-11-20 11:08:59,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:08:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:08:59,762 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 11:08:59,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586490079] [2019-11-20 11:08:59,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438945556] [2019-11-20 11:08:59,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/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 11:08:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:08:59,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 11:08:59,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:08:59,837 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 11:08:59,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 11:08:59,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2019-11-20 11:08:59,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683490677] [2019-11-20 11:08:59,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 11:08:59,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:08:59,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 11:08:59,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 11:08:59,841 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-11-20 11:08:59,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:08:59,857 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-20 11:08:59,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 11:08:59,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-20 11:08:59,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:08:59,858 INFO L225 Difference]: With dead ends: 12 [2019-11-20 11:08:59,858 INFO L226 Difference]: Without dead ends: 8 [2019-11-20 11:08:59,859 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 11:08:59,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-20 11:08:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 11:08:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 11:08:59,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-20 11:08:59,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-20 11:08:59,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:08:59,862 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-20 11:08:59,862 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 11:08:59,863 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-20 11:08:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 11:08:59,863 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:08:59,863 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-20 11:09:00,064 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 11:09:00,064 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:09:00,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:09:00,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1368874232, now seen corresponding path program 2 times [2019-11-20 11:09:00,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:09:00,065 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85269344] [2019-11-20 11:09:00,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:09:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:09:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:09:00,155 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85269344] [2019-11-20 11:09:00,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861908326] [2019-11-20 11:09:00,156 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/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 11:09:00,202 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-20 11:09:00,202 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 11:09:00,202 WARN L253 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 11:09:00,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:09:00,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:09:00,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:09:00,224 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:09:00,237 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:09:00,242 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:09:00,243 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:09:00,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 11:09:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 11:09:00,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 11:09:00,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2019-11-20 11:09:00,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390858830] [2019-11-20 11:09:00,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 11:09:00,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:09:00,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 11:09:00,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 11:09:00,265 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2019-11-20 11:09:02,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:09:02,289 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-11-20 11:09:02,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 11:09:02,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-20 11:09:02,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:09:02,301 INFO L225 Difference]: With dead ends: 8 [2019-11-20 11:09:02,301 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 11:09:02,302 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 11:09:02,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 11:09:02,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 11:09:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 11:09:02,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 11:09:02,303 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-20 11:09:02,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:09:02,304 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 11:09:02,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 11:09:02,304 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 11:09:02,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 11:09:02,505 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 11:09:02,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 11:09:02,522 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 11:09:02,523 INFO L447 ceAbstractionStarter]: At program point L13-2(lines 13 15) the Hoare annotation is: true [2019-11-20 11:09:02,523 INFO L444 ceAbstractionStarter]: For program point L13-3(lines 13 15) no Hoare annotation was computed. [2019-11-20 11:09:02,523 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-20 11:09:02,523 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 11:09:02,523 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 11:09:02,524 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-20 11:09:02,524 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-20 11:09:02,524 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 1 18) the Hoare annotation is: true [2019-11-20 11:09:02,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:09:02 BoogieIcfgContainer [2019-11-20 11:09:02,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 11:09:02,532 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 11:09:02,532 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 11:09:02,532 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 11:09:02,533 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:08:59" (3/4) ... [2019-11-20 11:09:02,537 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 11:09:02,548 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-20 11:09:02,548 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 11:09:02,588 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c98261d5-3f96-40d7-9d6f-6f34c4c15c38/bin/uautomizer/witness.graphml [2019-11-20 11:09:02,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 11:09:02,590 INFO L168 Benchmark]: Toolchain (without parser) took 4065.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -108.2 MB). Peak memory consumption was 40.1 MB. Max. memory is 11.5 GB. [2019-11-20 11:09:02,590 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:09:02,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -187.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-20 11:09:02,592 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.20 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 11:09:02,592 INFO L168 Benchmark]: Boogie Preprocessor took 29.24 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 11:09:02,593 INFO L168 Benchmark]: RCFGBuilder took 288.84 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: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2019-11-20 11:09:02,594 INFO L168 Benchmark]: TraceAbstraction took 3320.34 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: 64.7 MB). Peak memory consumption was 64.7 MB. Max. memory is 11.5 GB. [2019-11-20 11:09:02,594 INFO L168 Benchmark]: Witness Printer took 56.16 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 11:09:02,597 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 329.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -187.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.20 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. * Boogie Preprocessor took 29.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 288.84 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: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3320.34 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: 64.7 MB). Peak memory consumption was 64.7 MB. Max. memory is 11.5 GB. * Witness Printer took 56.16 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: - 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: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 3.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 10 SDs, 0 SdLazy, 13 SolverSat, 1 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 31 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 456 SizeOfPredicates, 4 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/8 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...