./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ssh-simplified/s3_srvr_1b.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ssh-simplified/s3_srvr_1b.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cac24a49d7b473be85039a3051680fd486b81b3 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 16:05:04,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:05:04,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:05:04,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:05:04,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:05:04,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:05:04,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:05:04,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:05:04,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:05:04,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:05:04,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:05:04,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:05:04,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:05:04,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:05:04,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:05:04,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:05:04,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:05:04,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:05:04,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:05:04,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:05:04,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:05:04,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:05:04,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:05:04,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:05:04,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:05:04,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:05:04,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:05:04,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:05:04,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:05:04,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:05:04,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:05:04,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:05:04,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:05:04,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:05:04,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:05:04,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:05:04,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:05:04,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:05:04,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:05:04,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:05:04,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:05:04,838 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 16:05:04,848 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:05:04,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:05:04,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 16:05:04,849 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 16:05:04,849 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 16:05:04,849 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 16:05:04,849 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 16:05:04,849 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 16:05:04,849 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 16:05:04,850 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 16:05:04,850 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 16:05:04,850 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 16:05:04,850 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 16:05:04,850 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 16:05:04,850 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 16:05:04,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:05:04,851 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:05:04,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:05:04,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:05:04,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:05:04,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:05:04,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:05:04,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:05:04,851 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 16:05:04,852 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:05:04,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:05:04,852 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:05:04,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:05:04,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:05:04,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:05:04,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:05:04,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:05:04,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:05:04,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:05:04,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:05:04,853 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 16:05:04,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:05:04,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:05:04,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:05:04,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:05:04,853 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan 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 -> Taipan 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 -> 7cac24a49d7b473be85039a3051680fd486b81b3 [2019-12-07 16:05:04,951 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:05:04,958 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:05:04,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:05:04,961 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:05:04,962 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:05:04,962 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan/../../sv-benchmarks/c/ssh-simplified/s3_srvr_1b.cil.c [2019-12-07 16:05:04,999 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan/data/0b52071ec/6db83e9df31f42c6ab9981be9385922a/FLAGbb99623d9 [2019-12-07 16:05:05,425 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:05:05,425 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/sv-benchmarks/c/ssh-simplified/s3_srvr_1b.cil.c [2019-12-07 16:05:05,430 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan/data/0b52071ec/6db83e9df31f42c6ab9981be9385922a/FLAGbb99623d9 [2019-12-07 16:05:05,439 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan/data/0b52071ec/6db83e9df31f42c6ab9981be9385922a [2019-12-07 16:05:05,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:05:05,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:05:05,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:05:05,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:05:05,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:05:05,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:05:05" (1/1) ... [2019-12-07 16:05:05,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d86038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:05:05, skipping insertion in model container [2019-12-07 16:05:05,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:05:05" (1/1) ... [2019-12-07 16:05:05,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:05:05,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:05:05,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:05:05,600 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:05:05,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:05:05,624 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:05:05,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:05:05 WrapperNode [2019-12-07 16:05:05,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:05:05,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:05:05,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:05:05,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:05:05,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:05:05" (1/1) ... [2019-12-07 16:05:05,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:05:05" (1/1) ... [2019-12-07 16:05:05,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:05:05,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:05:05,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:05:05,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:05:05,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:05:05" (1/1) ... [2019-12-07 16:05:05,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:05:05" (1/1) ... [2019-12-07 16:05:05,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:05:05" (1/1) ... [2019-12-07 16:05:05,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:05:05" (1/1) ... [2019-12-07 16:05:05,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:05:05" (1/1) ... [2019-12-07 16:05:05,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:05:05" (1/1) ... [2019-12-07 16:05:05,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:05:05" (1/1) ... [2019-12-07 16:05:05,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:05:05,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:05:05,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:05:05,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:05:05,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:05:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan/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 [2019-12-07 16:05:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:05:05,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:05:05,862 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:05:05,862 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 16:05:05,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:05:05 BoogieIcfgContainer [2019-12-07 16:05:05,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:05:05,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:05:05,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:05:05,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:05:05,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:05:05" (1/3) ... [2019-12-07 16:05:05,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1b6f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:05:05, skipping insertion in model container [2019-12-07 16:05:05,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:05:05" (2/3) ... [2019-12-07 16:05:05,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1b6f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:05:05, skipping insertion in model container [2019-12-07 16:05:05,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:05:05" (3/3) ... [2019-12-07 16:05:05,867 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2019-12-07 16:05:05,874 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:05:05,878 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 16:05:05,885 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 16:05:05,901 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:05:05,902 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:05:05,902 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:05:05,902 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:05:05,902 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:05:05,902 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:05:05,902 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:05:05,902 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:05:05,911 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-12-07 16:05:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 16:05:05,915 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:05:05,915 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 16:05:05,915 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:05:05,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:05:05,919 INFO L82 PathProgramCache]: Analyzing trace with hash 963424, now seen corresponding path program 1 times [2019-12-07 16:05:05,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:05:05,925 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472608614] [2019-12-07 16:05:05,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:05:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:05:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:05:06,007 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472608614] [2019-12-07 16:05:06,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:05:06,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:05:06,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934156278] [2019-12-07 16:05:06,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:05:06,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:05:06,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:05:06,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:05:06,022 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2019-12-07 16:05:06,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:05:06,061 INFO L93 Difference]: Finished difference Result 44 states and 71 transitions. [2019-12-07 16:05:06,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:05:06,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 16:05:06,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:05:06,069 INFO L225 Difference]: With dead ends: 44 [2019-12-07 16:05:06,069 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 16:05:06,071 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 [2019-12-07 16:05:06,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 16:05:06,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 16:05:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 16:05:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2019-12-07 16:05:06,095 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 4 [2019-12-07 16:05:06,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:05:06,095 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2019-12-07 16:05:06,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:05:06,095 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2019-12-07 16:05:06,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 16:05:06,095 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:05:06,095 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-12-07 16:05:06,096 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:05:06,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:05:06,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1361043087, now seen corresponding path program 1 times [2019-12-07 16:05:06,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:05:06,096 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076043554] [2019-12-07 16:05:06,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:05:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:05:06,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:05:06,116 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076043554] [2019-12-07 16:05:06,116 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367175013] [2019-12-07 16:05:06,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan/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 [2019-12-07 16:05:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:05:06,136 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:05:06,139 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:05:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:05:06,153 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:05:06,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:05:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 16:05:06,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 16:05:06,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 4 [2019-12-07 16:05:06,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063141828] [2019-12-07 16:05:06,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:05:06,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:05:06,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:05:06,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:05:06,168 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 3 states. [2019-12-07 16:05:06,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:05:06,186 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2019-12-07 16:05:06,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:05:06,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-12-07 16:05:06,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:05:06,188 INFO L225 Difference]: With dead ends: 39 [2019-12-07 16:05:06,188 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 16:05:06,188 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:05:06,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 16:05:06,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-12-07 16:05:06,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 16:05:06,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions. [2019-12-07 16:05:06,194 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 49 transitions. Word has length 7 [2019-12-07 16:05:06,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:05:06,194 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 49 transitions. [2019-12-07 16:05:06,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:05:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 49 transitions. [2019-12-07 16:05:06,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 16:05:06,195 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:05:06,195 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:05:06,395 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:05:06,396 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:05:06,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:05:06,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1218689736, now seen corresponding path program 1 times [2019-12-07 16:05:06,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:05:06,397 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622229051] [2019-12-07 16:05:06,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:05:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:05:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:05:06,447 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622229051] [2019-12-07 16:05:06,447 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778664964] [2019-12-07 16:05:06,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan/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 [2019-12-07 16:05:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:05:06,464 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 16:05:06,465 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:05:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:05:06,475 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:05:06,481 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:05:06,488 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:05:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 16:05:06,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 16:05:06,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4] total 6 [2019-12-07 16:05:06,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595103249] [2019-12-07 16:05:06,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:05:06,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:05:06,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:05:06,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 16:05:06,496 INFO L87 Difference]: Start difference. First operand 35 states and 49 transitions. Second operand 3 states. [2019-12-07 16:05:06,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:05:06,518 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2019-12-07 16:05:06,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:05:06,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-12-07 16:05:06,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:05:06,519 INFO L225 Difference]: With dead ends: 49 [2019-12-07 16:05:06,520 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 16:05:06,520 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 16:05:06,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 16:05:06,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2019-12-07 16:05:06,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 16:05:06,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2019-12-07 16:05:06,526 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 13 [2019-12-07 16:05:06,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:05:06,526 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2019-12-07 16:05:06,526 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:05:06,526 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2019-12-07 16:05:06,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 16:05:06,527 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:05:06,527 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:05:06,727 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:05:06,728 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:05:06,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:05:06,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1363482189, now seen corresponding path program 1 times [2019-12-07 16:05:06,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:05:06,729 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593276218] [2019-12-07 16:05:06,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:05:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:05:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 16:05:06,765 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593276218] [2019-12-07 16:05:06,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:05:06,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 16:05:06,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520594110] [2019-12-07 16:05:06,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:05:06,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:05:06,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:05:06,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:05:06,768 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand 3 states. [2019-12-07 16:05:06,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:05:06,818 INFO L93 Difference]: Finished difference Result 101 states and 145 transitions. [2019-12-07 16:05:06,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:05:06,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-12-07 16:05:06,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:05:06,819 INFO L225 Difference]: With dead ends: 101 [2019-12-07 16:05:06,819 INFO L226 Difference]: Without dead ends: 39 [2019-12-07 16:05:06,820 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:05:06,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-12-07 16:05:06,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2019-12-07 16:05:06,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 16:05:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2019-12-07 16:05:06,824 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 15 [2019-12-07 16:05:06,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:05:06,824 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-12-07 16:05:06,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:05:06,825 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2019-12-07 16:05:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 16:05:06,825 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:05:06,825 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:05:06,825 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:05:06,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:05:06,825 INFO L82 PathProgramCache]: Analyzing trace with hash -451599084, now seen corresponding path program 1 times [2019-12-07 16:05:06,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:05:06,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297115644] [2019-12-07 16:05:06,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:05:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:05:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:05:06,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297115644] [2019-12-07 16:05:06,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424995457] [2019-12-07 16:05:06,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan/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 [2019-12-07 16:05:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:05:06,883 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 16:05:06,884 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:05:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 16:05:06,890 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:05:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 16:05:06,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-12-07 16:05:06,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2019-12-07 16:05:06,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45833619] [2019-12-07 16:05:06,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:05:06,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:05:06,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:05:06,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:05:06,893 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 3 states. [2019-12-07 16:05:06,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:05:06,911 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2019-12-07 16:05:06,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:05:06,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-12-07 16:05:06,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:05:06,913 INFO L225 Difference]: With dead ends: 63 [2019-12-07 16:05:06,913 INFO L226 Difference]: Without dead ends: 41 [2019-12-07 16:05:06,913 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:05:06,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-12-07 16:05:06,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-12-07 16:05:06,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-12-07 16:05:06,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2019-12-07 16:05:06,920 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 21 [2019-12-07 16:05:06,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:05:06,921 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2019-12-07 16:05:06,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:05:06,921 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2019-12-07 16:05:06,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 16:05:06,922 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:05:06,922 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:05:07,123 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:05:07,123 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:05:07,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:05:07,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1194654199, now seen corresponding path program 1 times [2019-12-07 16:05:07,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:05:07,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901722327] [2019-12-07 16:05:07,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:05:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:05:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 16:05:07,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901722327] [2019-12-07 16:05:07,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255523229] [2019-12-07 16:05:07,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan/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 [2019-12-07 16:05:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:05:07,175 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 16:05:07,176 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:05:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 16:05:07,182 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:05:07,185 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 16:05:07,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-12-07 16:05:07,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2019-12-07 16:05:07,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800464511] [2019-12-07 16:05:07,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:05:07,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:05:07,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:05:07,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:05:07,187 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 3 states. [2019-12-07 16:05:07,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:05:07,196 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2019-12-07 16:05:07,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:05:07,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-12-07 16:05:07,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:05:07,197 INFO L225 Difference]: With dead ends: 64 [2019-12-07 16:05:07,197 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 16:05:07,198 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:05:07,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 16:05:07,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 16:05:07,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 16:05:07,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 16:05:07,198 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-12-07 16:05:07,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:05:07,198 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:05:07,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:05:07,198 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 16:05:07,199 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 16:05:07,399 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:05:07,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 16:05:07,536 INFO L246 CegarLoopResult]: For program point L77-1(lines 53 106) no Hoare annotation was computed. [2019-12-07 16:05:07,536 INFO L249 CegarLoopResult]: At program point L139(lines 8 140) the Hoare annotation is: true [2019-12-07 16:05:07,536 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 16:05:07,536 INFO L242 CegarLoopResult]: At program point L24(lines 24 127) the Hoare annotation is: (or (and (< ULTIMATE.start_main_~blastFlag~0 5) (<= 8640 ULTIMATE.start_main_~s__state~0)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)))) [2019-12-07 16:05:07,537 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 138) no Hoare annotation was computed. [2019-12-07 16:05:07,537 INFO L242 CegarLoopResult]: At program point L49(lines 49 108) the Hoare annotation is: (< ULTIMATE.start_main_~blastFlag~0 5) [2019-12-07 16:05:07,537 INFO L242 CegarLoopResult]: At program point L45(lines 45 110) the Hoare annotation is: (or (and (< ULTIMATE.start_main_~blastFlag~0 5) (<= 8640 ULTIMATE.start_main_~s__state~0)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)))) [2019-12-07 16:05:07,537 INFO L249 CegarLoopResult]: At program point L136(lines 8 140) the Hoare annotation is: true [2019-12-07 16:05:07,537 INFO L242 CegarLoopResult]: At program point L99(lines 17 134) the Hoare annotation is: (or (and (< ULTIMATE.start_main_~blastFlag~0 5) (<= 8640 ULTIMATE.start_main_~s__state~0)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)))) [2019-12-07 16:05:07,537 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 16:05:07,537 INFO L246 CegarLoopResult]: For program point L95(lines 95 97) no Hoare annotation was computed. [2019-12-07 16:05:07,537 INFO L242 CegarLoopResult]: At program point L29(lines 29 124) the Hoare annotation is: (or (and (< ULTIMATE.start_main_~blastFlag~0 5) (<= 8640 ULTIMATE.start_main_~s__state~0)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0)))) [2019-12-07 16:05:07,538 INFO L242 CegarLoopResult]: At program point L96(lines 8 140) the Hoare annotation is: false [2019-12-07 16:05:07,538 INFO L246 CegarLoopResult]: For program point L92-1(lines 53 106) no Hoare annotation was computed. [2019-12-07 16:05:07,538 INFO L246 CegarLoopResult]: For program point L88-1(lines 53 106) no Hoare annotation was computed. [2019-12-07 16:05:07,538 INFO L246 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2019-12-07 16:05:07,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:05:07 BoogieIcfgContainer [2019-12-07 16:05:07,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:05:07,551 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:05:07,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:05:07,551 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:05:07,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:05:05" (3/4) ... [2019-12-07 16:05:07,554 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 16:05:07,561 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-12-07 16:05:07,561 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 16:05:07,595 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_01adc0d0-8ae5-411f-9a16-6a6207ae625d/bin/utaipan/witness.graphml [2019-12-07 16:05:07,596 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:05:07,597 INFO L168 Benchmark]: Toolchain (without parser) took 2155.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 944.7 MB in the beginning and 940.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 113.8 MB. Max. memory is 11.5 GB. [2019-12-07 16:05:07,597 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:05:07,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -159.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:05:07,598 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.56 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:05:07,598 INFO L168 Benchmark]: Boogie Preprocessor took 12.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:05:07,599 INFO L168 Benchmark]: RCFGBuilder took 202.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:05:07,599 INFO L168 Benchmark]: TraceAbstraction took 1687.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 940.5 MB in the end (delta: 136.1 MB). Peak memory consumption was 136.1 MB. Max. memory is 11.5 GB. [2019-12-07 16:05:07,599 INFO L168 Benchmark]: Witness Printer took 45.06 ms. Allocated memory is still 1.1 GB. Free memory is still 940.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:05:07,600 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -159.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.56 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 202.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1687.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 940.5 MB in the end (delta: 136.1 MB). Peak memory consumption was 136.1 MB. Max. memory is 11.5 GB. * Witness Printer took 45.06 ms. Allocated memory is still 1.1 GB. Free memory is still 940.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 138]: 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: 8]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: blastFlag < 5 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((blastFlag < 5 && 8640 <= s__state) || blastFlag <= 2) || (8640 == s__state && !(s__hit == 0)) - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: ((blastFlag < 5 && 8640 <= s__state) || blastFlag <= 2) || (8640 == s__state && !(s__hit == 0)) - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((blastFlag < 5 && 8640 <= s__state) || blastFlag <= 2) || (8640 == s__state && !(s__hit == 0)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((blastFlag < 5 && 8640 <= s__state) || blastFlag <= 2) || (8640 == s__state && !(s__hit == 0)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Result: SAFE, OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 99 SDtfs, 34 SDslu, 47 SDs, 0 SdLazy, 74 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 42 NumberOfFragments, 82 HoareAnnotationTreeSize, 8 FomulaSimplifications, 324 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 28 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 7269 SizeOfPredicates, 2 NumberOfNonLiveVariables, 145 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 123/139 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...