./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.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_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/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 0e04f2515dd5c7ce697460622800d33932bf1903 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/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 0e04f2515dd5c7ce697460622800d33932bf1903 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 21:03:17,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:03:17,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:03:17,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:03:17,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:03:17,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:03:17,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:03:17,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:03:17,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:03:17,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:03:17,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:03:17,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:03:17,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:03:17,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:03:17,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:03:17,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:03:17,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:03:17,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:03:17,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:03:17,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:03:17,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:03:17,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:03:17,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:03:17,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:03:17,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:03:17,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:03:17,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:03:17,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:03:17,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:03:17,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:03:17,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:03:17,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:03:17,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:03:17,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:03:17,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:03:17,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:03:17,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:03:17,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:03:17,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:03:17,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:03:17,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:03:17,259 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 21:03:17,272 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:03:17,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:03:17,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:03:17,273 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:03:17,273 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:03:17,274 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:03:17,274 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 21:03:17,274 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:03:17,274 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:03:17,274 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 21:03:17,275 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 21:03:17,275 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:03:17,275 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 21:03:17,275 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 21:03:17,275 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 21:03:17,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:03:17,276 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:03:17,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 21:03:17,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:03:17,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:03:17,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:03:17,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:03:17,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:03:17,277 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:03:17,277 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:03:17,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:03:17,278 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:03:17,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:03:17,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:03:17,278 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:03:17,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:03:17,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:03:17,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:03:17,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:03:17,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:03:17,279 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 21:03:17,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 21:03:17,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:03:17,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:03:17,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:03:17,280 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_a446c4ec-d4fa-4055-a4bf-9c550d633676/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 -> 0e04f2515dd5c7ce697460622800d33932bf1903 [2019-12-07 21:03:17,379 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:03:17,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:03:17,389 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:03:17,390 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:03:17,390 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:03:17,390 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-12-07 21:03:17,426 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/data/ecd7c776f/721add5a673a4687b8a58e65b850301c/FLAGb608a4866 [2019-12-07 21:03:17,771 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:03:17,771 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-12-07 21:03:17,777 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/data/ecd7c776f/721add5a673a4687b8a58e65b850301c/FLAGb608a4866 [2019-12-07 21:03:17,786 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/data/ecd7c776f/721add5a673a4687b8a58e65b850301c [2019-12-07 21:03:17,788 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:03:17,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:03:17,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:03:17,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:03:17,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:03:17,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:03:17" (1/1) ... [2019-12-07 21:03:17,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39660cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:17, skipping insertion in model container [2019-12-07 21:03:17,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:03:17" (1/1) ... [2019-12-07 21:03:17,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:03:17,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:03:17,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:03:17,987 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:03:18,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:03:18,023 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:03:18,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:18 WrapperNode [2019-12-07 21:03:18,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:03:18,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:03:18,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:03:18,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:03:18,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:18" (1/1) ... [2019-12-07 21:03:18,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:18" (1/1) ... [2019-12-07 21:03:18,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:03:18,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:03:18,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:03:18,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:03:18,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:18" (1/1) ... [2019-12-07 21:03:18,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:18" (1/1) ... [2019-12-07 21:03:18,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:18" (1/1) ... [2019-12-07 21:03:18,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:18" (1/1) ... [2019-12-07 21:03:18,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:18" (1/1) ... [2019-12-07 21:03:18,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:18" (1/1) ... [2019-12-07 21:03:18,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:18" (1/1) ... [2019-12-07 21:03:18,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:03:18,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:03:18,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:03:18,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:03:18,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/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 21:03:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:03:18,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:03:18,553 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:03:18,553 INFO L287 CfgBuilder]: Removed 30 assume(true) statements. [2019-12-07 21:03:18,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:03:18 BoogieIcfgContainer [2019-12-07 21:03:18,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:03:18,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:03:18,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:03:18,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:03:18,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:03:17" (1/3) ... [2019-12-07 21:03:18,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e222e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:03:18, skipping insertion in model container [2019-12-07 21:03:18,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:18" (2/3) ... [2019-12-07 21:03:18,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e222e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:03:18, skipping insertion in model container [2019-12-07 21:03:18,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:03:18" (3/3) ... [2019-12-07 21:03:18,560 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2019-12-07 21:03:18,567 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:03:18,572 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-12-07 21:03:18,580 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 21:03:18,598 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:03:18,598 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 21:03:18,598 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:03:18,598 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:03:18,598 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:03:18,598 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:03:18,598 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:03:18,598 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:03:18,610 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2019-12-07 21:03:18,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 21:03:18,614 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:18,615 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:18,615 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:18,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:18,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1740591867, now seen corresponding path program 1 times [2019-12-07 21:03:18,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:03:18,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301296765] [2019-12-07 21:03:18,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:03:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:03:18,832 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 21:03:18,832 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301296765] [2019-12-07 21:03:18,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:03:18,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 21:03:18,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83270434] [2019-12-07 21:03:18,837 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 21:03:18,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:03:18,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 21:03:18,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-12-07 21:03:18,848 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 7 states. [2019-12-07 21:03:18,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:03:18,998 INFO L93 Difference]: Finished difference Result 208 states and 309 transitions. [2019-12-07 21:03:18,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 21:03:19,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-12-07 21:03:19,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:03:19,011 INFO L225 Difference]: With dead ends: 208 [2019-12-07 21:03:19,011 INFO L226 Difference]: Without dead ends: 136 [2019-12-07 21:03:19,014 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-12-07 21:03:19,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-12-07 21:03:19,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 58. [2019-12-07 21:03:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 21:03:19,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2019-12-07 21:03:19,043 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 76 transitions. Word has length 10 [2019-12-07 21:03:19,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:03:19,043 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 76 transitions. [2019-12-07 21:03:19,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 21:03:19,043 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 76 transitions. [2019-12-07 21:03:19,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 21:03:19,044 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:19,044 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:19,044 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:19,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:19,045 INFO L82 PathProgramCache]: Analyzing trace with hash 942193295, now seen corresponding path program 1 times [2019-12-07 21:03:19,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:03:19,045 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631909083] [2019-12-07 21:03:19,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:03:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:03:19,116 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 21:03:19,117 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631909083] [2019-12-07 21:03:19,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:03:19,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 21:03:19,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297709832] [2019-12-07 21:03:19,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:03:19,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:03:19,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:03:19,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:03:19,118 INFO L87 Difference]: Start difference. First operand 58 states and 76 transitions. Second operand 5 states. [2019-12-07 21:03:19,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:03:19,187 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2019-12-07 21:03:19,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 21:03:19,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-12-07 21:03:19,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:03:19,188 INFO L225 Difference]: With dead ends: 87 [2019-12-07 21:03:19,188 INFO L226 Difference]: Without dead ends: 74 [2019-12-07 21:03:19,189 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-12-07 21:03:19,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-12-07 21:03:19,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 61. [2019-12-07 21:03:19,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-12-07 21:03:19,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2019-12-07 21:03:19,194 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 13 [2019-12-07 21:03:19,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:03:19,194 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2019-12-07 21:03:19,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:03:19,195 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2019-12-07 21:03:19,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 21:03:19,195 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:19,195 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:19,195 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:19,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:19,196 INFO L82 PathProgramCache]: Analyzing trace with hash -808206958, now seen corresponding path program 1 times [2019-12-07 21:03:19,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:03:19,196 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737808909] [2019-12-07 21:03:19,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:03:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:03:19,355 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 21:03:19,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737808909] [2019-12-07 21:03:19,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:03:19,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-12-07 21:03:19,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740565382] [2019-12-07 21:03:19,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 21:03:19,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:03:19,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 21:03:19,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-12-07 21:03:19,357 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand 10 states. [2019-12-07 21:03:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:03:19,741 INFO L93 Difference]: Finished difference Result 132 states and 171 transitions. [2019-12-07 21:03:19,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-12-07 21:03:19,741 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-12-07 21:03:19,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:03:19,742 INFO L225 Difference]: With dead ends: 132 [2019-12-07 21:03:19,742 INFO L226 Difference]: Without dead ends: 110 [2019-12-07 21:03:19,743 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2019-12-07 21:03:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-12-07 21:03:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 82. [2019-12-07 21:03:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-12-07 21:03:19,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 111 transitions. [2019-12-07 21:03:19,750 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 111 transitions. Word has length 14 [2019-12-07 21:03:19,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:03:19,750 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 111 transitions. [2019-12-07 21:03:19,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 21:03:19,751 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 111 transitions. [2019-12-07 21:03:19,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 21:03:19,751 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:19,751 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:19,752 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:19,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:19,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1184833808, now seen corresponding path program 1 times [2019-12-07 21:03:19,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:03:19,752 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704941808] [2019-12-07 21:03:19,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:03:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:03:19,890 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 21:03:19,890 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704941808] [2019-12-07 21:03:19,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:03:19,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 21:03:19,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652314371] [2019-12-07 21:03:19,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 21:03:19,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:03:19,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 21:03:19,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 21:03:19,892 INFO L87 Difference]: Start difference. First operand 82 states and 111 transitions. Second operand 8 states. [2019-12-07 21:03:20,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:03:20,053 INFO L93 Difference]: Finished difference Result 128 states and 158 transitions. [2019-12-07 21:03:20,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 21:03:20,054 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-12-07 21:03:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:03:20,054 INFO L225 Difference]: With dead ends: 128 [2019-12-07 21:03:20,054 INFO L226 Difference]: Without dead ends: 98 [2019-12-07 21:03:20,055 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-12-07 21:03:20,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-12-07 21:03:20,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 72. [2019-12-07 21:03:20,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-12-07 21:03:20,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2019-12-07 21:03:20,061 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 14 [2019-12-07 21:03:20,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:03:20,061 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2019-12-07 21:03:20,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 21:03:20,061 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2019-12-07 21:03:20,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 21:03:20,062 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:20,062 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:20,062 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:20,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:20,062 INFO L82 PathProgramCache]: Analyzing trace with hash 489965319, now seen corresponding path program 1 times [2019-12-07 21:03:20,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:03:20,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101622871] [2019-12-07 21:03:20,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:03:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:03:20,457 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 21:03:20,458 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101622871] [2019-12-07 21:03:20,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:03:20,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-12-07 21:03:20,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312834672] [2019-12-07 21:03:20,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 21:03:20,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:03:20,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 21:03:20,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-12-07 21:03:20,459 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand 13 states. [2019-12-07 21:03:21,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:03:21,005 INFO L93 Difference]: Finished difference Result 102 states and 127 transitions. [2019-12-07 21:03:21,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-12-07 21:03:21,006 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2019-12-07 21:03:21,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:03:21,007 INFO L225 Difference]: With dead ends: 102 [2019-12-07 21:03:21,007 INFO L226 Difference]: Without dead ends: 97 [2019-12-07 21:03:21,007 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2019-12-07 21:03:21,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-12-07 21:03:21,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 75. [2019-12-07 21:03:21,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-12-07 21:03:21,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2019-12-07 21:03:21,016 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 18 [2019-12-07 21:03:21,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:03:21,016 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2019-12-07 21:03:21,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 21:03:21,016 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2019-12-07 21:03:21,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 21:03:21,017 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:21,017 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:21,018 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:21,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:21,018 INFO L82 PathProgramCache]: Analyzing trace with hash 116995301, now seen corresponding path program 1 times [2019-12-07 21:03:21,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:03:21,018 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839917941] [2019-12-07 21:03:21,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:03:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:03:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:03:21,096 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 21:03:21,096 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 21:03:21,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:03:21 BoogieIcfgContainer [2019-12-07 21:03:21,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:03:21,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:03:21,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:03:21,115 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:03:21,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:03:18" (3/4) ... [2019-12-07 21:03:21,118 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 21:03:21,118 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:03:21,120 INFO L168 Benchmark]: Toolchain (without parser) took 3330.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 939.3 MB in the beginning and 850.3 MB in the end (delta: 89.1 MB). Peak memory consumption was 188.7 MB. Max. memory is 11.5 GB. [2019-12-07 21:03:21,120 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:03:21,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -148.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-12-07 21:03:21,121 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.84 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 21:03:21,121 INFO L168 Benchmark]: Boogie Preprocessor took 21.91 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 21:03:21,122 INFO L168 Benchmark]: RCFGBuilder took 471.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 66.7 MB). Peak memory consumption was 66.7 MB. Max. memory is 11.5 GB. [2019-12-07 21:03:21,122 INFO L168 Benchmark]: TraceAbstraction took 2559.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 850.3 MB in the end (delta: 170.9 MB). Peak memory consumption was 170.9 MB. Max. memory is 11.5 GB. [2019-12-07 21:03:21,122 INFO L168 Benchmark]: Witness Printer took 3.20 ms. Allocated memory is still 1.1 GB. Free memory is still 850.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:03:21,124 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 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 234.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -148.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.84 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 21.91 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 471.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 66.7 MB). Peak memory consumption was 66.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2559.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 850.3 MB in the end (delta: 170.9 MB). Peak memory consumption was 170.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.20 ms. Allocated memory is still 1.1 GB. Free memory is still 850.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add ; [L223] unsigned int zero ; [L224] int sa ; [L225] int sb ; [L226] int tmp ; [L227] int tmp___0 ; [L228] int tmp___1 ; [L229] int tmp___2 ; [L230] int tmp___3 ; [L231] int tmp___4 ; [L232] int tmp___5 ; [L233] int tmp___6 ; [L234] int tmp___7 ; [L235] int tmp___8 ; [L236] int tmp___9 ; [L237] int __retres23 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L241] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L242] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L243] b = base2flt(mb, eb) [L245] COND FALSE !(a < zero) [L248] COND TRUE a > zero [L249] tmp = 1 [L253] sa = tmp [L255] COND FALSE !(b < zero) [L258] COND TRUE b > zero [L259] tmp___0 = 1 [L263] sb = tmp___0 [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 6 error locations. Result: UNSAFE, OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 339 SDtfs, 802 SDslu, 1562 SDs, 0 SdLazy, 500 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred 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, 5 MinimizatonAttempts, 167 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 8494 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 21:03:22,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:03:22,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:03:22,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:03:22,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:03:22,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:03:22,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:03:22,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:03:22,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:03:22,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:03:22,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:03:22,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:03:22,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:03:22,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:03:22,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:03:22,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:03:22,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:03:22,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:03:22,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:03:22,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:03:22,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:03:22,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:03:22,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:03:22,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:03:22,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:03:22,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:03:22,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:03:22,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:03:22,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:03:22,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:03:22,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:03:22,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:03:22,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:03:22,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:03:22,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:03:22,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:03:22,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:03:22,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:03:22,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:03:22,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:03:22,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:03:22,525 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 21:03:22,535 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:03:22,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:03:22,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:03:22,536 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:03:22,536 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:03:22,536 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:03:22,536 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:03:22,536 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:03:22,536 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:03:22,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:03:22,537 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:03:22,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:03:22,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:03:22,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:03:22,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:03:22,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:03:22,538 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:03:22,538 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 21:03:22,538 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 21:03:22,538 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:03:22,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:03:22,538 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:03:22,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:03:22,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:03:22,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 21:03:22,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:03:22,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:03:22,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:03:22,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:03:22,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:03:22,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:03:22,540 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 21:03:22,540 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 21:03:22,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:03:22,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:03:22,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:03:22,540 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_a446c4ec-d4fa-4055-a4bf-9c550d633676/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 -> 0e04f2515dd5c7ce697460622800d33932bf1903 [2019-12-07 21:03:22,701 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:03:22,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:03:22,714 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:03:22,715 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:03:22,716 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:03:22,716 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-12-07 21:03:22,764 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/data/375fcf326/26b013d950c64ee5b5bb300fd009d90e/FLAG5f49f0a35 [2019-12-07 21:03:23,104 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:03:23,105 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-12-07 21:03:23,110 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/data/375fcf326/26b013d950c64ee5b5bb300fd009d90e/FLAG5f49f0a35 [2019-12-07 21:03:23,119 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/data/375fcf326/26b013d950c64ee5b5bb300fd009d90e [2019-12-07 21:03:23,120 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:03:23,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:03:23,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:03:23,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:03:23,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:03:23,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:03:23" (1/1) ... [2019-12-07 21:03:23,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@253f1c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:23, skipping insertion in model container [2019-12-07 21:03:23,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:03:23" (1/1) ... [2019-12-07 21:03:23,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:03:23,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:03:23,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:03:23,283 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:03:23,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:03:23,354 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:03:23,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:23 WrapperNode [2019-12-07 21:03:23,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:03:23,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:03:23,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:03:23,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:03:23,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:23" (1/1) ... [2019-12-07 21:03:23,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:23" (1/1) ... [2019-12-07 21:03:23,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:03:23,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:03:23,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:03:23,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:03:23,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:23" (1/1) ... [2019-12-07 21:03:23,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:23" (1/1) ... [2019-12-07 21:03:23,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:23" (1/1) ... [2019-12-07 21:03:23,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:23" (1/1) ... [2019-12-07 21:03:23,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:23" (1/1) ... [2019-12-07 21:03:23,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:23" (1/1) ... [2019-12-07 21:03:23,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:23" (1/1) ... [2019-12-07 21:03:23,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:03:23,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:03:23,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:03:23,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:03:23,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/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 21:03:23,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:03:23,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:03:23,756 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:03:23,757 INFO L287 CfgBuilder]: Removed 30 assume(true) statements. [2019-12-07 21:03:23,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:03:23 BoogieIcfgContainer [2019-12-07 21:03:23,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:03:23,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:03:23,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:03:23,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:03:23,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:03:23" (1/3) ... [2019-12-07 21:03:23,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751be2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:03:23, skipping insertion in model container [2019-12-07 21:03:23,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:03:23" (2/3) ... [2019-12-07 21:03:23,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751be2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:03:23, skipping insertion in model container [2019-12-07 21:03:23,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:03:23" (3/3) ... [2019-12-07 21:03:23,762 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2019-12-07 21:03:23,768 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:03:23,773 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-12-07 21:03:23,780 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 21:03:23,796 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:03:23,796 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 21:03:23,796 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:03:23,796 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:03:23,796 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:03:23,796 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:03:23,796 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:03:23,796 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:03:23,808 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-12-07 21:03:23,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 21:03:23,812 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:23,813 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:23,813 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:23,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:23,817 INFO L82 PathProgramCache]: Analyzing trace with hash 934616753, now seen corresponding path program 1 times [2019-12-07 21:03:23,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:03:23,824 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392873722] [2019-12-07 21:03:23,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 21:03:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:03:23,871 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 21:03:23,875 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:03:23,910 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 21:03:23,911 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:03:23,928 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 21:03:23,929 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392873722] [2019-12-07 21:03:23,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:03:23,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-12-07 21:03:23,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735446268] [2019-12-07 21:03:23,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:03:23,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:03:23,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:03:23,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:03:23,944 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 5 states. [2019-12-07 21:03:24,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:03:24,101 INFO L93 Difference]: Finished difference Result 396 states and 606 transitions. [2019-12-07 21:03:24,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 21:03:24,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-12-07 21:03:24,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:03:24,113 INFO L225 Difference]: With dead ends: 396 [2019-12-07 21:03:24,113 INFO L226 Difference]: Without dead ends: 294 [2019-12-07 21:03:24,116 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 21:03:24,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-12-07 21:03:24,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 119. [2019-12-07 21:03:24,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-12-07 21:03:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 171 transitions. [2019-12-07 21:03:24,154 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 171 transitions. Word has length 17 [2019-12-07 21:03:24,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:03:24,154 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 171 transitions. [2019-12-07 21:03:24,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:03:24,154 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 171 transitions. [2019-12-07 21:03:24,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 21:03:24,155 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:24,155 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:24,356 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 21:03:24,356 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:24,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:24,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1603282001, now seen corresponding path program 1 times [2019-12-07 21:03:24,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:03:24,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881384810] [2019-12-07 21:03:24,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 21:03:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:03:24,431 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 21:03:24,432 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:03:24,449 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 21:03:24,449 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:03:24,461 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 21:03:24,462 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881384810] [2019-12-07 21:03:24,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:03:24,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-12-07 21:03:24,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124612058] [2019-12-07 21:03:24,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:03:24,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:03:24,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:03:24,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:03:24,465 INFO L87 Difference]: Start difference. First operand 119 states and 171 transitions. Second operand 5 states. [2019-12-07 21:03:24,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:03:24,615 INFO L93 Difference]: Finished difference Result 393 states and 542 transitions. [2019-12-07 21:03:24,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 21:03:24,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-12-07 21:03:24,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:03:24,618 INFO L225 Difference]: With dead ends: 393 [2019-12-07 21:03:24,618 INFO L226 Difference]: Without dead ends: 336 [2019-12-07 21:03:24,620 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 21:03:24,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2019-12-07 21:03:24,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 185. [2019-12-07 21:03:24,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2019-12-07 21:03:24,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 268 transitions. [2019-12-07 21:03:24,641 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 268 transitions. Word has length 21 [2019-12-07 21:03:24,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:03:24,642 INFO L462 AbstractCegarLoop]: Abstraction has 185 states and 268 transitions. [2019-12-07 21:03:24,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:03:24,642 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 268 transitions. [2019-12-07 21:03:24,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 21:03:24,644 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:24,644 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:24,844 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 21:03:24,845 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:24,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:24,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1210254991, now seen corresponding path program 1 times [2019-12-07 21:03:24,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:03:24,848 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915700476] [2019-12-07 21:03:24,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 21:03:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:03:24,928 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 21:03:24,929 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:03:24,945 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 21:03:24,946 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:03:24,961 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 21:03:24,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915700476] [2019-12-07 21:03:24,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:03:24,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-12-07 21:03:24,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182407985] [2019-12-07 21:03:24,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:03:24,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:03:24,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:03:24,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:03:24,963 INFO L87 Difference]: Start difference. First operand 185 states and 268 transitions. Second operand 5 states. [2019-12-07 21:03:25,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:03:25,046 INFO L93 Difference]: Finished difference Result 377 states and 534 transitions. [2019-12-07 21:03:25,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 21:03:25,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-12-07 21:03:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:03:25,049 INFO L225 Difference]: With dead ends: 377 [2019-12-07 21:03:25,049 INFO L226 Difference]: Without dead ends: 294 [2019-12-07 21:03:25,049 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 21:03:25,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-12-07 21:03:25,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 277. [2019-12-07 21:03:25,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2019-12-07 21:03:25,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 400 transitions. [2019-12-07 21:03:25,064 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 400 transitions. Word has length 21 [2019-12-07 21:03:25,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:03:25,064 INFO L462 AbstractCegarLoop]: Abstraction has 277 states and 400 transitions. [2019-12-07 21:03:25,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:03:25,064 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 400 transitions. [2019-12-07 21:03:25,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 21:03:25,066 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:25,066 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:25,266 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 21:03:25,267 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:25,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:25,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1309704943, now seen corresponding path program 1 times [2019-12-07 21:03:25,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:03:25,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694840624] [2019-12-07 21:03:25,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 21:03:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:03:25,342 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 21:03:25,344 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:03:25,362 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 21:03:25,362 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:03:25,373 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 21:03:25,374 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694840624] [2019-12-07 21:03:25,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:03:25,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-12-07 21:03:25,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023718332] [2019-12-07 21:03:25,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 21:03:25,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:03:25,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 21:03:25,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 21:03:25,375 INFO L87 Difference]: Start difference. First operand 277 states and 400 transitions. Second operand 6 states. [2019-12-07 21:03:25,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:03:25,495 INFO L93 Difference]: Finished difference Result 394 states and 552 transitions. [2019-12-07 21:03:25,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 21:03:25,495 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-12-07 21:03:25,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:03:25,497 INFO L225 Difference]: With dead ends: 394 [2019-12-07 21:03:25,497 INFO L226 Difference]: Without dead ends: 317 [2019-12-07 21:03:25,498 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 21:03:25,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2019-12-07 21:03:25,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 257. [2019-12-07 21:03:25,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2019-12-07 21:03:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 364 transitions. [2019-12-07 21:03:25,512 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 364 transitions. Word has length 21 [2019-12-07 21:03:25,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:03:25,512 INFO L462 AbstractCegarLoop]: Abstraction has 257 states and 364 transitions. [2019-12-07 21:03:25,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 21:03:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 364 transitions. [2019-12-07 21:03:25,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-07 21:03:25,514 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:25,514 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:25,715 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 21:03:25,716 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:25,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:25,717 INFO L82 PathProgramCache]: Analyzing trace with hash -610901190, now seen corresponding path program 1 times [2019-12-07 21:03:25,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:03:25,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449726392] [2019-12-07 21:03:25,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 21:03:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:03:25,806 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 21:03:25,808 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:03:25,852 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 21:03:25,852 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:03:25,860 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 21:03:25,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449726392] [2019-12-07 21:03:25,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:03:25,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-12-07 21:03:25,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222625527] [2019-12-07 21:03:25,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 21:03:25,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:03:25,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 21:03:25,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-07 21:03:25,864 INFO L87 Difference]: Start difference. First operand 257 states and 364 transitions. Second operand 7 states. [2019-12-07 21:03:26,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:03:26,088 INFO L93 Difference]: Finished difference Result 401 states and 540 transitions. [2019-12-07 21:03:26,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 21:03:26,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-12-07 21:03:26,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:03:26,090 INFO L225 Difference]: With dead ends: 401 [2019-12-07 21:03:26,090 INFO L226 Difference]: Without dead ends: 353 [2019-12-07 21:03:26,091 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2019-12-07 21:03:26,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2019-12-07 21:03:26,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 247. [2019-12-07 21:03:26,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2019-12-07 21:03:26,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 347 transitions. [2019-12-07 21:03:26,101 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 347 transitions. Word has length 25 [2019-12-07 21:03:26,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:03:26,101 INFO L462 AbstractCegarLoop]: Abstraction has 247 states and 347 transitions. [2019-12-07 21:03:26,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 21:03:26,101 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 347 transitions. [2019-12-07 21:03:26,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-07 21:03:26,102 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:26,102 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:26,303 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 21:03:26,304 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:26,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:26,305 INFO L82 PathProgramCache]: Analyzing trace with hash -873114857, now seen corresponding path program 1 times [2019-12-07 21:03:26,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:03:26,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086127792] [2019-12-07 21:03:26,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 21:03:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:03:26,377 INFO L264 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 21:03:26,379 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:03:26,391 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 21:03:26,391 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:03:26,409 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 21:03:26,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086127792] [2019-12-07 21:03:26,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:03:26,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 21:03:26,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571879274] [2019-12-07 21:03:26,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 21:03:26,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:03:26,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 21:03:26,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 21:03:26,411 INFO L87 Difference]: Start difference. First operand 247 states and 347 transitions. Second operand 6 states. [2019-12-07 21:03:26,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:03:26,458 INFO L93 Difference]: Finished difference Result 455 states and 634 transitions. [2019-12-07 21:03:26,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 21:03:26,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2019-12-07 21:03:26,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:03:26,460 INFO L225 Difference]: With dead ends: 455 [2019-12-07 21:03:26,461 INFO L226 Difference]: Without dead ends: 380 [2019-12-07 21:03:26,461 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 21:03:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2019-12-07 21:03:26,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 309. [2019-12-07 21:03:26,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2019-12-07 21:03:26,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 422 transitions. [2019-12-07 21:03:26,476 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 422 transitions. Word has length 29 [2019-12-07 21:03:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:03:26,476 INFO L462 AbstractCegarLoop]: Abstraction has 309 states and 422 transitions. [2019-12-07 21:03:26,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 21:03:26,476 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 422 transitions. [2019-12-07 21:03:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-07 21:03:26,477 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:26,477 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:26,678 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 21:03:26,679 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:26,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:26,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1737423153, now seen corresponding path program 1 times [2019-12-07 21:03:26,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:03:26,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411415569] [2019-12-07 21:03:26,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-12-07 21:03:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:03:26,774 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 21:03:26,776 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:03:26,785 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 21:03:26,794 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 21:03:26,794 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:03:26,816 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 21:03:26,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411415569] [2019-12-07 21:03:26,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:03:26,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 21:03:26,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927634359] [2019-12-07 21:03:26,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 21:03:26,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:03:26,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 21:03:26,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 21:03:26,818 INFO L87 Difference]: Start difference. First operand 309 states and 422 transitions. Second operand 6 states. [2019-12-07 21:03:26,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:03:26,944 INFO L93 Difference]: Finished difference Result 456 states and 627 transitions. [2019-12-07 21:03:26,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 21:03:26,944 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2019-12-07 21:03:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:03:26,946 INFO L225 Difference]: With dead ends: 456 [2019-12-07 21:03:26,946 INFO L226 Difference]: Without dead ends: 454 [2019-12-07 21:03:26,947 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-12-07 21:03:26,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2019-12-07 21:03:26,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 307. [2019-12-07 21:03:26,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2019-12-07 21:03:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 418 transitions. [2019-12-07 21:03:26,957 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 418 transitions. Word has length 29 [2019-12-07 21:03:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:03:26,958 INFO L462 AbstractCegarLoop]: Abstraction has 307 states and 418 transitions. [2019-12-07 21:03:26,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 21:03:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 418 transitions. [2019-12-07 21:03:26,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 21:03:26,959 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:26,959 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:27,160 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 21:03:27,161 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:27,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:27,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1232022065, now seen corresponding path program 1 times [2019-12-07 21:03:27,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:03:27,165 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706873046] [2019-12-07 21:03:27,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-12-07 21:03:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:03:27,252 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 21:03:27,254 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:03:27,324 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 21:03:27,324 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:03:27,373 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 21:03:27,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706873046] [2019-12-07 21:03:27,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:03:27,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2019-12-07 21:03:27,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629901457] [2019-12-07 21:03:27,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 21:03:27,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:03:27,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 21:03:27,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-12-07 21:03:27,374 INFO L87 Difference]: Start difference. First operand 307 states and 418 transitions. Second operand 13 states. [2019-12-07 21:03:28,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:03:28,127 INFO L93 Difference]: Finished difference Result 581 states and 777 transitions. [2019-12-07 21:03:28,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-12-07 21:03:28,127 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2019-12-07 21:03:28,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:03:28,130 INFO L225 Difference]: With dead ends: 581 [2019-12-07 21:03:28,130 INFO L226 Difference]: Without dead ends: 540 [2019-12-07 21:03:28,131 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2019-12-07 21:03:28,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2019-12-07 21:03:28,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 372. [2019-12-07 21:03:28,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2019-12-07 21:03:28,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 504 transitions. [2019-12-07 21:03:28,149 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 504 transitions. Word has length 30 [2019-12-07 21:03:28,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:03:28,150 INFO L462 AbstractCegarLoop]: Abstraction has 372 states and 504 transitions. [2019-12-07 21:03:28,150 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 21:03:28,150 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 504 transitions. [2019-12-07 21:03:28,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 21:03:28,151 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:28,151 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:28,351 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 21:03:28,352 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:28,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:28,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1174763763, now seen corresponding path program 1 times [2019-12-07 21:03:28,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:03:28,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689123383] [2019-12-07 21:03:28,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-12-07 21:03:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:03:28,436 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 21:03:28,437 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:03:28,446 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 21:03:28,446 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:03:28,454 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 21:03:28,455 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689123383] [2019-12-07 21:03:28,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:03:28,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 21:03:28,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939501734] [2019-12-07 21:03:28,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 21:03:28,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:03:28,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 21:03:28,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 21:03:28,456 INFO L87 Difference]: Start difference. First operand 372 states and 504 transitions. Second operand 6 states. [2019-12-07 21:03:28,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:03:28,506 INFO L93 Difference]: Finished difference Result 429 states and 579 transitions. [2019-12-07 21:03:28,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 21:03:28,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-12-07 21:03:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:03:28,508 INFO L225 Difference]: With dead ends: 429 [2019-12-07 21:03:28,508 INFO L226 Difference]: Without dead ends: 424 [2019-12-07 21:03:28,509 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-07 21:03:28,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2019-12-07 21:03:28,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 372. [2019-12-07 21:03:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2019-12-07 21:03:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 499 transitions. [2019-12-07 21:03:28,520 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 499 transitions. Word has length 30 [2019-12-07 21:03:28,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:03:28,520 INFO L462 AbstractCegarLoop]: Abstraction has 372 states and 499 transitions. [2019-12-07 21:03:28,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 21:03:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 499 transitions. [2019-12-07 21:03:28,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 21:03:28,521 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:28,521 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:28,721 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2019-12-07 21:03:28,722 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:28,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:28,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1505781804, now seen corresponding path program 1 times [2019-12-07 21:03:28,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:03:28,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819328514] [2019-12-07 21:03:28,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2019-12-07 21:03:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:03:28,749 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 21:03:28,751 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:03:28,758 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 21:03:28,758 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:03:28,768 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 21:03:28,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819328514] [2019-12-07 21:03:28,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:03:28,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 21:03:28,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810733482] [2019-12-07 21:03:28,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 21:03:28,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:03:28,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 21:03:28,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 21:03:28,769 INFO L87 Difference]: Start difference. First operand 372 states and 499 transitions. Second operand 6 states. [2019-12-07 21:03:28,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:03:28,816 INFO L93 Difference]: Finished difference Result 775 states and 1019 transitions. [2019-12-07 21:03:28,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 21:03:28,816 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-12-07 21:03:28,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:03:28,819 INFO L225 Difference]: With dead ends: 775 [2019-12-07 21:03:28,819 INFO L226 Difference]: Without dead ends: 716 [2019-12-07 21:03:28,820 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 21:03:28,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2019-12-07 21:03:28,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 390. [2019-12-07 21:03:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2019-12-07 21:03:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 524 transitions. [2019-12-07 21:03:28,834 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 524 transitions. Word has length 31 [2019-12-07 21:03:28,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:03:28,834 INFO L462 AbstractCegarLoop]: Abstraction has 390 states and 524 transitions. [2019-12-07 21:03:28,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 21:03:28,834 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 524 transitions. [2019-12-07 21:03:28,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 21:03:28,835 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:03:28,835 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:03:29,035 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2019-12-07 21:03:29,036 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:03:29,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:03:29,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1078465644, now seen corresponding path program 1 times [2019-12-07 21:03:29,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:03:29,036 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3191091] [2019-12-07 21:03:29,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2019-12-07 21:03:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:03:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:03:29,117 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 21:03:29,117 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 21:03:29,317 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2019-12-07 21:03:29,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:03:29 BoogieIcfgContainer [2019-12-07 21:03:29,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:03:29,341 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:03:29,341 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:03:29,341 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:03:29,341 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:03:23" (3/4) ... [2019-12-07 21:03:29,343 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 21:03:29,387 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a446c4ec-d4fa-4055-a4bf-9c550d633676/bin/utaipan/witness.graphml [2019-12-07 21:03:29,388 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:03:29,389 INFO L168 Benchmark]: Toolchain (without parser) took 6267.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.6 MB). Free memory was 951.0 MB in the beginning and 917.9 MB in the end (delta: 33.2 MB). Peak memory consumption was 239.8 MB. Max. memory is 11.5 GB. [2019-12-07 21:03:29,389 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:03:29,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2019-12-07 21:03:29,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.85 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. [2019-12-07 21:03:29,390 INFO L168 Benchmark]: Boogie Preprocessor took 27.43 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 21:03:29,390 INFO L168 Benchmark]: RCFGBuilder took 343.94 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: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 11.5 GB. [2019-12-07 21:03:29,390 INFO L168 Benchmark]: TraceAbstraction took 5582.22 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.5 MB). Free memory was 1.1 GB in the beginning and 917.9 MB in the end (delta: 163.3 MB). Peak memory consumption was 238.8 MB. Max. memory is 11.5 GB. [2019-12-07 21:03:29,391 INFO L168 Benchmark]: Witness Printer took 47.04 ms. Allocated memory is still 1.2 GB. Free memory is still 917.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:03:29,392 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 233.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.85 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 27.43 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 343.94 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: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5582.22 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.5 MB). Free memory was 1.1 GB in the beginning and 917.9 MB in the end (delta: 163.3 MB). Peak memory consumption was 238.8 MB. Max. memory is 11.5 GB. * Witness Printer took 47.04 ms. Allocated memory is still 1.2 GB. Free memory is still 917.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add ; [L223] unsigned int zero ; [L224] int sa ; [L225] int sb ; [L226] int tmp ; [L227] int tmp___0 ; [L228] int tmp___1 ; [L229] int tmp___2 ; [L230] int tmp___3 ; [L231] int tmp___4 ; [L232] int tmp___5 ; [L233] int tmp___6 ; [L234] int tmp___7 ; [L235] int tmp___8 ; [L236] int tmp___9 ; [L237] int __retres23 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L241] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L242] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L243] b = base2flt(mb, eb) [L245] COND FALSE !(a < zero) [L248] COND TRUE a > zero [L249] tmp = 1 [L253] sa = tmp [L255] COND FALSE !(b < zero) [L258] COND TRUE b > zero [L259] tmp___0 = 1 [L263] sb = tmp___0 [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND FALSE !(!(cond)) [L105] delta = ea - eb [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 95 locations, 6 error locations. Result: UNSAFE, OverallTime: 5.5s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1352 SDtfs, 3612 SDslu, 5031 SDs, 0 SdLazy, 992 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 541 GetRequests, 445 SyntacticMatches, 5 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=390occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 1273 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 285 NumberOfCodeBlocks, 285 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 488 ConstructedInterpolants, 0 QuantifiedInterpolants, 22852 SizeOfPredicates, 45 NumberOfNonLiveVariables, 576 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...