./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63854123d7ab77bd9f32ab7eefa710cb72f6a12a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-22 13:06:03,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:03,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:03,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:03,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:03,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:03,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:03,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:03,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:03,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:03,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:03,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:03,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:03,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:03,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:03,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:03,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:03,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:03,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:03,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:03,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:03,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:03,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:03,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:03,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:03,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:03,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:03,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:03,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:03,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:03,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:03,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:03,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:03,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:03,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:03,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:03,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:03,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:03,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:03,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:03,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:03,430 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:06:03,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:03,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:03,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:03,478 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:03,478 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:03,478 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:03,478 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:06:03,479 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:03,479 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:03,479 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:06:03,483 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:06:03,483 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:03,484 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:06:03,484 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:06:03,484 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:06:03,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:03,485 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:03,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:03,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:03,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:03,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:06:03,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:03,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:06:03,486 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:03,486 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:03,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:06:03,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:03,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:06:03,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:03,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:03,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:03,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:03,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:03,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:03,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:06:03,490 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:06:03,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:06:03,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:06:03,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:03,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:03,491 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-11-22 13:06:03,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:03,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:03,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:03,809 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:03,809 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:03,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-22 13:06:03,885 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/data/e07ebd38e/2ee35babc8bd41f7b16026aa06aadaeb/FLAG77078b912 [2020-11-22 13:06:04,367 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:04,368 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-22 13:06:04,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/data/e07ebd38e/2ee35babc8bd41f7b16026aa06aadaeb/FLAG77078b912 [2020-11-22 13:06:04,732 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/data/e07ebd38e/2ee35babc8bd41f7b16026aa06aadaeb [2020-11-22 13:06:04,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:04,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:04,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:04,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:04,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:04,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:04" (1/1) ... [2020-11-22 13:06:04,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c5df4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:04, skipping insertion in model container [2020-11-22 13:06:04,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:04" (1/1) ... [2020-11-22 13:06:04,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:04,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:05,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:05,049 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:05,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:05,123 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:05,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05 WrapperNode [2020-11-22 13:06:05,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:05,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:05,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:05,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:05,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:05,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:05,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:05,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:05,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:05,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:05,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:05,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:05,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/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 [2020-11-22 13:06:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:06:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:05,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:06,199 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:06,200 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-11-22 13:06:06,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:06 BoogieIcfgContainer [2020-11-22 13:06:06,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:06,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:06,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:06,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:06,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:04" (1/3) ... [2020-11-22 13:06:06,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab6012f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:06, skipping insertion in model container [2020-11-22 13:06:06,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (2/3) ... [2020-11-22 13:06:06,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab6012f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:06, skipping insertion in model container [2020-11-22 13:06:06,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:06" (3/3) ... [2020-11-22 13:06:06,209 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-11-22 13:06:06,220 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:06,224 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-22 13:06:06,236 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-22 13:06:06,260 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:06,260 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:06:06,260 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:06,260 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:06,261 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:06,261 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:06,261 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:06,261 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:06,277 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-11-22 13:06:06,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:06:06,284 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:06,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:06,285 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:06,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:06,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1464517207, now seen corresponding path program 1 times [2020-11-22 13:06:06,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:06,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488356443] [2020-11-22 13:06:06,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:06,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:06,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488356443] [2020-11-22 13:06:06,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:06,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-22 13:06:06,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614384993] [2020-11-22 13:06:06,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:06:06,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:06,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:06:06,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:06:06,618 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 6 states. [2020-11-22 13:06:06,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:06,799 INFO L93 Difference]: Finished difference Result 208 states and 302 transitions. [2020-11-22 13:06:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 13:06:06,802 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-22 13:06:06,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:06,816 INFO L225 Difference]: With dead ends: 208 [2020-11-22 13:06:06,816 INFO L226 Difference]: Without dead ends: 137 [2020-11-22 13:06:06,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:06:06,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-22 13:06:06,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 98. [2020-11-22 13:06:06,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-22 13:06:06,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 136 transitions. [2020-11-22 13:06:06,870 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 136 transitions. Word has length 10 [2020-11-22 13:06:06,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:06,871 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 136 transitions. [2020-11-22 13:06:06,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:06:06,871 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 136 transitions. [2020-11-22 13:06:06,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:06:06,872 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:06,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:06,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:06:06,873 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:06,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:06,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1036588228, now seen corresponding path program 1 times [2020-11-22 13:06:06,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:06,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35539284] [2020-11-22 13:06:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:07,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35539284] [2020-11-22 13:06:07,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:07,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-22 13:06:07,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733665991] [2020-11-22 13:06:07,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:06:07,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:07,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:06:07,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:06:07,185 INFO L87 Difference]: Start difference. First operand 98 states and 136 transitions. Second operand 10 states. [2020-11-22 13:06:07,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:07,665 INFO L93 Difference]: Finished difference Result 144 states and 181 transitions. [2020-11-22 13:06:07,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-22 13:06:07,665 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-22 13:06:07,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:07,667 INFO L225 Difference]: With dead ends: 144 [2020-11-22 13:06:07,668 INFO L226 Difference]: Without dead ends: 136 [2020-11-22 13:06:07,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-11-22 13:06:07,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-22 13:06:07,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2020-11-22 13:06:07,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-22 13:06:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 132 transitions. [2020-11-22 13:06:07,697 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 132 transitions. Word has length 13 [2020-11-22 13:06:07,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:07,698 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 132 transitions. [2020-11-22 13:06:07,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:06:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 132 transitions. [2020-11-22 13:06:07,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:06:07,700 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:07,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:07,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:06:07,701 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:07,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:07,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1576094046, now seen corresponding path program 1 times [2020-11-22 13:06:07,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:07,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513503657] [2020-11-22 13:06:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:07,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513503657] [2020-11-22 13:06:07,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:07,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 13:06:07,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990183000] [2020-11-22 13:06:07,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:06:07,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:07,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:06:07,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:06:07,903 INFO L87 Difference]: Start difference. First operand 96 states and 132 transitions. Second operand 5 states. [2020-11-22 13:06:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:08,025 INFO L93 Difference]: Finished difference Result 144 states and 176 transitions. [2020-11-22 13:06:08,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 13:06:08,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-22 13:06:08,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:08,029 INFO L225 Difference]: With dead ends: 144 [2020-11-22 13:06:08,029 INFO L226 Difference]: Without dead ends: 122 [2020-11-22 13:06:08,030 INFO L677 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 [2020-11-22 13:06:08,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-22 13:06:08,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 86. [2020-11-22 13:06:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-22 13:06:08,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2020-11-22 13:06:08,040 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 14 [2020-11-22 13:06:08,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:08,040 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2020-11-22 13:06:08,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:06:08,041 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2020-11-22 13:06:08,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 13:06:08,042 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:08,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:08,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:06:08,042 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:08,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:08,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1234568257, now seen corresponding path program 1 times [2020-11-22 13:06:08,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:08,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397906569] [2020-11-22 13:06:08,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:08,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:08,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397906569] [2020-11-22 13:06:08,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:08,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-22 13:06:08,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795882989] [2020-11-22 13:06:08,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 13:06:08,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:08,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 13:06:08,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:06:08,226 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand 7 states. [2020-11-22 13:06:08,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:08,412 INFO L93 Difference]: Finished difference Result 249 states and 307 transitions. [2020-11-22 13:06:08,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 13:06:08,413 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-11-22 13:06:08,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:08,417 INFO L225 Difference]: With dead ends: 249 [2020-11-22 13:06:08,417 INFO L226 Difference]: Without dead ends: 229 [2020-11-22 13:06:08,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:06:08,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-11-22 13:06:08,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 92. [2020-11-22 13:06:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-22 13:06:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 125 transitions. [2020-11-22 13:06:08,443 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 125 transitions. Word has length 16 [2020-11-22 13:06:08,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:08,444 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 125 transitions. [2020-11-22 13:06:08,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 13:06:08,444 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 125 transitions. [2020-11-22 13:06:08,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 13:06:08,450 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:08,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:08,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:06:08,451 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:08,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:08,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1413250939, now seen corresponding path program 1 times [2020-11-22 13:06:08,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:08,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195973544] [2020-11-22 13:06:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:08,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195973544] [2020-11-22 13:06:08,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:08,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 13:06:08,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098725983] [2020-11-22 13:06:08,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:06:08,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:08,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:06:08,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:06:08,596 INFO L87 Difference]: Start difference. First operand 92 states and 125 transitions. Second operand 5 states. [2020-11-22 13:06:08,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:08,668 INFO L93 Difference]: Finished difference Result 128 states and 162 transitions. [2020-11-22 13:06:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:06:08,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-22 13:06:08,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:08,673 INFO L225 Difference]: With dead ends: 128 [2020-11-22 13:06:08,673 INFO L226 Difference]: Without dead ends: 108 [2020-11-22 13:06:08,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:06:08,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-22 13:06:08,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 84. [2020-11-22 13:06:08,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-22 13:06:08,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 113 transitions. [2020-11-22 13:06:08,687 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 113 transitions. Word has length 16 [2020-11-22 13:06:08,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:08,688 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 113 transitions. [2020-11-22 13:06:08,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:06:08,688 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 113 transitions. [2020-11-22 13:06:08,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:06:08,689 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:08,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:08,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:06:08,690 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:08,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:08,690 INFO L82 PathProgramCache]: Analyzing trace with hash 952977255, now seen corresponding path program 1 times [2020-11-22 13:06:08,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:08,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151936255] [2020-11-22 13:06:08,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:09,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:09,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151936255] [2020-11-22 13:06:09,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:09,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-22 13:06:09,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741031455] [2020-11-22 13:06:09,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-22 13:06:09,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:09,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-22 13:06:09,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:06:09,083 INFO L87 Difference]: Start difference. First operand 84 states and 113 transitions. Second operand 9 states. [2020-11-22 13:06:09,640 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-11-22 13:06:09,944 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-11-22 13:06:10,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:10,046 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2020-11-22 13:06:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-22 13:06:10,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-11-22 13:06:10,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:10,047 INFO L225 Difference]: With dead ends: 100 [2020-11-22 13:06:10,048 INFO L226 Difference]: Without dead ends: 82 [2020-11-22 13:06:10,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:06:10,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-22 13:06:10,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2020-11-22 13:06:10,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-22 13:06:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2020-11-22 13:06:10,055 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 17 [2020-11-22 13:06:10,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:10,055 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2020-11-22 13:06:10,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-22 13:06:10,055 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2020-11-22 13:06:10,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:06:10,056 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:10,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:10,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 13:06:10,056 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:10,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:10,057 INFO L82 PathProgramCache]: Analyzing trace with hash -383037141, now seen corresponding path program 1 times [2020-11-22 13:06:10,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:10,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798582340] [2020-11-22 13:06:10,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:10,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798582340] [2020-11-22 13:06:10,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:10,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-22 13:06:10,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852829138] [2020-11-22 13:06:10,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-22 13:06:10,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:10,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-22 13:06:10,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:06:10,291 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand 9 states. [2020-11-22 13:06:12,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:12,010 INFO L93 Difference]: Finished difference Result 287 states and 342 transitions. [2020-11-22 13:06:12,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-22 13:06:12,011 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-11-22 13:06:12,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:12,013 INFO L225 Difference]: With dead ends: 287 [2020-11-22 13:06:12,013 INFO L226 Difference]: Without dead ends: 275 [2020-11-22 13:06:12,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-11-22 13:06:12,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-11-22 13:06:12,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 95. [2020-11-22 13:06:12,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-22 13:06:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 128 transitions. [2020-11-22 13:06:12,031 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 128 transitions. Word has length 17 [2020-11-22 13:06:12,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:12,031 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 128 transitions. [2020-11-22 13:06:12,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-22 13:06:12,032 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 128 transitions. [2020-11-22 13:06:12,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:06:12,033 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:12,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:12,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:06:12,034 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:12,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:12,034 INFO L82 PathProgramCache]: Analyzing trace with hash -861053593, now seen corresponding path program 1 times [2020-11-22 13:06:12,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:12,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172126519] [2020-11-22 13:06:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:12,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172126519] [2020-11-22 13:06:12,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:12,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-22 13:06:12,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518735135] [2020-11-22 13:06:12,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:06:12,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:12,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:06:12,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:06:12,361 INFO L87 Difference]: Start difference. First operand 95 states and 128 transitions. Second operand 8 states. [2020-11-22 13:06:12,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:12,776 INFO L93 Difference]: Finished difference Result 109 states and 141 transitions. [2020-11-22 13:06:12,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-22 13:06:12,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-11-22 13:06:12,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:12,778 INFO L225 Difference]: With dead ends: 109 [2020-11-22 13:06:12,778 INFO L226 Difference]: Without dead ends: 101 [2020-11-22 13:06:12,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-11-22 13:06:12,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-22 13:06:12,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2020-11-22 13:06:12,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-22 13:06:12,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 122 transitions. [2020-11-22 13:06:12,791 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 122 transitions. Word has length 17 [2020-11-22 13:06:12,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:12,791 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 122 transitions. [2020-11-22 13:06:12,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:06:12,791 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 122 transitions. [2020-11-22 13:06:12,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 13:06:12,793 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:12,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:12,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 13:06:12,793 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:12,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:12,794 INFO L82 PathProgramCache]: Analyzing trace with hash 361341263, now seen corresponding path program 1 times [2020-11-22 13:06:12,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:12,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457966463] [2020-11-22 13:06:12,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:12,827 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:12,854 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:12,888 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:06:12,888 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:06:12,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 13:06:12,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:12 BoogieIcfgContainer [2020-11-22 13:06:12,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:12,949 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:12,949 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:12,950 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:12,950 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:06" (3/4) ... [2020-11-22 13:06:12,953 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:06:12,953 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:12,960 INFO L168 Benchmark]: Toolchain (without parser) took 8218.88 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 79.2 MB in the beginning and 58.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:12,961 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 81.8 MB. Free memory was 41.6 MB in the beginning and 41.6 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:12,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.20 ms. Allocated memory is still 107.0 MB. Free memory was 78.9 MB in the beginning and 81.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:12,962 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.45 ms. Allocated memory is still 107.0 MB. Free memory was 81.9 MB in the beginning and 79.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:12,963 INFO L168 Benchmark]: Boogie Preprocessor took 69.14 ms. Allocated memory is still 107.0 MB. Free memory was 79.4 MB in the beginning and 77.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:12,966 INFO L168 Benchmark]: RCFGBuilder took 921.50 ms. Allocated memory is still 107.0 MB. Free memory was 77.7 MB in the beginning and 67.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:12,966 INFO L168 Benchmark]: TraceAbstraction took 6746.41 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 67.1 MB in the beginning and 58.8 MB in the end (delta: 8.3 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:12,966 INFO L168 Benchmark]: Witness Printer took 4.08 ms. Allocated memory is still 130.0 MB. Free memory is still 58.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:12,972 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 81.8 MB. Free memory was 41.6 MB in the beginning and 41.6 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 380.20 ms. Allocated memory is still 107.0 MB. Free memory was 78.9 MB in the beginning and 81.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.45 ms. Allocated memory is still 107.0 MB. Free memory was 81.9 MB in the beginning and 79.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.14 ms. Allocated memory is still 107.0 MB. Free memory was 79.4 MB in the beginning and 77.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 921.50 ms. Allocated memory is still 107.0 MB. Free memory was 77.7 MB in the beginning and 67.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6746.41 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 67.1 MB in the beginning and 58.8 MB in the end (delta: 8.3 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.08 ms. Allocated memory is still 130.0 MB. Free memory is still 58.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND TRUE !(cond) [L3] __assert_fail("0", "soft_float_4-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 72 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 876 SDtfs, 911 SDslu, 3512 SDs, 0 SdLazy, 736 SolverSat, 131 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=1, 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, 8 MinimizatonAttempts, 474 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 8683 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 0.2.0-a4ecdab [2020-11-22 13:06:15,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:15,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:15,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:15,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:15,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:15,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:15,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:15,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:15,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:15,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:15,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:15,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:15,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:15,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:15,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:15,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:15,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:15,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:15,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:15,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:15,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:15,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:15,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:15,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:15,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:15,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:15,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:15,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:15,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:15,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:15,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:15,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:15,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:15,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:15,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:15,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:15,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:15,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:15,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:15,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:15,522 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:06:15,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:15,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:15,550 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:15,550 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:15,550 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:15,550 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:15,551 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:15,551 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:15,551 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:15,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:15,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:15,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:15,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:15,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:06:15,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:15,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:06:15,554 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:15,555 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:06:15,555 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:06:15,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:15,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:06:15,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:15,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:06:15,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:15,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:06:15,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:15,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:15,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:15,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:15,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:15,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:06:15,559 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:06:15,559 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:06:15,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:06:15,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:15,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:15,560 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-11-22 13:06:15,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:15,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:15,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:15,932 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:15,933 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:15,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-22 13:06:15,993 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/data/e33fce34c/226fe22d5a9448d9836ba5e75dec5df3/FLAG4f21ecb59 [2020-11-22 13:06:16,534 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:16,535 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-22 13:06:16,546 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/data/e33fce34c/226fe22d5a9448d9836ba5e75dec5df3/FLAG4f21ecb59 [2020-11-22 13:06:16,852 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/data/e33fce34c/226fe22d5a9448d9836ba5e75dec5df3 [2020-11-22 13:06:16,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:16,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:16,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:16,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:16,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:16,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:16" (1/1) ... [2020-11-22 13:06:16,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5454e61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:16, skipping insertion in model container [2020-11-22 13:06:16,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:16" (1/1) ... [2020-11-22 13:06:16,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:16,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:17,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:17,115 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:17,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:17,235 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:17,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17 WrapperNode [2020-11-22 13:06:17,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:17,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:17,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:17,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:17,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:17,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:17,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:17,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:17,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:17,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:17,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:17,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:17,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/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 [2020-11-22 13:06:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:06:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:17,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:18,195 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:18,195 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-11-22 13:06:18,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:18 BoogieIcfgContainer [2020-11-22 13:06:18,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:18,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:18,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:18,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:18,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:16" (1/3) ... [2020-11-22 13:06:18,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4bf4e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:18, skipping insertion in model container [2020-11-22 13:06:18,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17" (2/3) ... [2020-11-22 13:06:18,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4bf4e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:18, skipping insertion in model container [2020-11-22 13:06:18,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:18" (3/3) ... [2020-11-22 13:06:18,204 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-11-22 13:06:18,215 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:18,220 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-22 13:06:18,232 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-22 13:06:18,282 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:18,282 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:06:18,282 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:18,283 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:18,283 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:18,283 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:18,283 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:18,283 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:18,298 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-11-22 13:06:18,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 13:06:18,304 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:18,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:18,306 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:18,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:18,311 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2020-11-22 13:06:18,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:18,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667316088] [2020-11-22 13:06:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/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 [2020-11-22 13:06:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:18,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-22 13:06:18,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:18,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:18,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667316088] [2020-11-22 13:06:18,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:18,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-22 13:06:18,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439229657] [2020-11-22 13:06:18,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:06:18,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:18,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:06:18,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:06:18,582 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 5 states. [2020-11-22 13:06:18,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:18,994 INFO L93 Difference]: Finished difference Result 238 states and 340 transitions. [2020-11-22 13:06:18,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:06:18,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-22 13:06:18,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:19,007 INFO L225 Difference]: With dead ends: 238 [2020-11-22 13:06:19,009 INFO L226 Difference]: Without dead ends: 139 [2020-11-22 13:06:19,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:06:19,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-22 13:06:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-11-22 13:06:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-22 13:06:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2020-11-22 13:06:19,068 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 15 [2020-11-22 13:06:19,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:19,069 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2020-11-22 13:06:19,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:06:19,069 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2020-11-22 13:06:19,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-22 13:06:19,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:19,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:19,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:06:19,274 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:19,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:19,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1695814483, now seen corresponding path program 1 times [2020-11-22 13:06:19,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:19,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495635545] [2020-11-22 13:06:19,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/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 [2020-11-22 13:06:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:19,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-22 13:06:19,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:19,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:19,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495635545] [2020-11-22 13:06:19,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:19,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-11-22 13:06:19,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027610652] [2020-11-22 13:06:19,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:06:19,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:19,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:06:19,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:06:19,434 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand 6 states. [2020-11-22 13:06:19,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:19,709 INFO L93 Difference]: Finished difference Result 226 states and 285 transitions. [2020-11-22 13:06:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-22 13:06:19,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-22 13:06:19,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:19,719 INFO L225 Difference]: With dead ends: 226 [2020-11-22 13:06:19,722 INFO L226 Difference]: Without dead ends: 200 [2020-11-22 13:06:19,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-11-22 13:06:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-22 13:06:19,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 119. [2020-11-22 13:06:19,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-22 13:06:19,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2020-11-22 13:06:19,761 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 19 [2020-11-22 13:06:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:19,762 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2020-11-22 13:06:19,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:06:19,762 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2020-11-22 13:06:19,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-22 13:06:19,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:19,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:19,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:06:19,972 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:19,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:19,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1395430658, now seen corresponding path program 1 times [2020-11-22 13:06:19,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:19,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688027049] [2020-11-22 13:06:19,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/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 [2020-11-22 13:06:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:20,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 13:06:20,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:20,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:20,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688027049] [2020-11-22 13:06:20,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:20,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-11-22 13:06:20,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779198360] [2020-11-22 13:06:20,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 13:06:20,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:20,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 13:06:20,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:06:20,123 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand 7 states. [2020-11-22 13:06:20,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:20,481 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2020-11-22 13:06:20,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-22 13:06:20,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-22 13:06:20,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:20,484 INFO L225 Difference]: With dead ends: 214 [2020-11-22 13:06:20,484 INFO L226 Difference]: Without dead ends: 185 [2020-11-22 13:06:20,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-11-22 13:06:20,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-22 13:06:20,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2020-11-22 13:06:20,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-22 13:06:20,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2020-11-22 13:06:20,499 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2020-11-22 13:06:20,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:20,500 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2020-11-22 13:06:20,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 13:06:20,500 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2020-11-22 13:06:20,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-22 13:06:20,501 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:20,501 INFO L422 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] [2020-11-22 13:06:20,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:06:20,718 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:20,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:20,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1831228676, now seen corresponding path program 1 times [2020-11-22 13:06:20,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:20,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573916984] [2020-11-22 13:06:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/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 [2020-11-22 13:06:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:20,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 13:06:20,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:20,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:20,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573916984] [2020-11-22 13:06:20,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:20,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2020-11-22 13:06:20,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374608770] [2020-11-22 13:06:20,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-22 13:06:20,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:20,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-22 13:06:20,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:06:20,911 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 9 states. [2020-11-22 13:06:21,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:21,342 INFO L93 Difference]: Finished difference Result 183 states and 230 transitions. [2020-11-22 13:06:21,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 13:06:21,343 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-11-22 13:06:21,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:21,346 INFO L225 Difference]: With dead ends: 183 [2020-11-22 13:06:21,346 INFO L226 Difference]: Without dead ends: 179 [2020-11-22 13:06:21,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-11-22 13:06:21,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-22 13:06:21,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2020-11-22 13:06:21,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-22 13:06:21,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2020-11-22 13:06:21,374 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 23 [2020-11-22 13:06:21,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:21,375 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2020-11-22 13:06:21,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-22 13:06:21,376 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2020-11-22 13:06:21,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-22 13:06:21,382 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:21,382 INFO L422 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] [2020-11-22 13:06:21,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 13:06:21,601 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:21,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:21,602 INFO L82 PathProgramCache]: Analyzing trace with hash 384833474, now seen corresponding path program 1 times [2020-11-22 13:06:21,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:21,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539451848] [2020-11-22 13:06:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/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 [2020-11-22 13:06:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:21,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 13:06:21,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:21,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:21,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539451848] [2020-11-22 13:06:21,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:21,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-11-22 13:06:21,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459905671] [2020-11-22 13:06:21,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 13:06:21,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:21,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 13:06:21,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:06:21,750 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand 7 states. [2020-11-22 13:06:21,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:21,946 INFO L93 Difference]: Finished difference Result 182 states and 230 transitions. [2020-11-22 13:06:21,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 13:06:21,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-22 13:06:21,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:21,948 INFO L225 Difference]: With dead ends: 182 [2020-11-22 13:06:21,948 INFO L226 Difference]: Without dead ends: 149 [2020-11-22 13:06:21,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-22 13:06:21,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-11-22 13:06:21,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-11-22 13:06:21,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-22 13:06:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2020-11-22 13:06:21,961 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 23 [2020-11-22 13:06:21,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:21,961 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2020-11-22 13:06:21,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 13:06:21,961 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2020-11-22 13:06:21,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-22 13:06:21,963 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:21,963 INFO L422 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] [2020-11-22 13:06:22,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 13:06:22,179 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:22,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:22,180 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2020-11-22 13:06:22,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:22,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022494489] [2020-11-22 13:06:22,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/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 [2020-11-22 13:06:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:22,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-22 13:06:22,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:22,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:22,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:22,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022494489] [2020-11-22 13:06:22,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:22,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2020-11-22 13:06:22,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382181579] [2020-11-22 13:06:22,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:06:22,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:22,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:06:22,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:06:22,408 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand 8 states. [2020-11-22 13:06:23,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:23,270 INFO L93 Difference]: Finished difference Result 369 states and 481 transitions. [2020-11-22 13:06:23,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-22 13:06:23,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-11-22 13:06:23,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:23,273 INFO L225 Difference]: With dead ends: 369 [2020-11-22 13:06:23,273 INFO L226 Difference]: Without dead ends: 323 [2020-11-22 13:06:23,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2020-11-22 13:06:23,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-22 13:06:23,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 129. [2020-11-22 13:06:23,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-11-22 13:06:23,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2020-11-22 13:06:23,289 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 23 [2020-11-22 13:06:23,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:23,289 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2020-11-22 13:06:23,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:06:23,290 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2020-11-22 13:06:23,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-22 13:06:23,291 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:23,291 INFO L422 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] [2020-11-22 13:06:23,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 13:06:23,507 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:23,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:23,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1177408342, now seen corresponding path program 1 times [2020-11-22 13:06:23,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:23,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071896015] [2020-11-22 13:06:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/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 [2020-11-22 13:06:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:23,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 13:06:23,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:23,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:23,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:23,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071896015] [2020-11-22 13:06:23,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:23,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2020-11-22 13:06:23,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545832530] [2020-11-22 13:06:23,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-22 13:06:23,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:23,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-22 13:06:23,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:06:23,684 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand 9 states. [2020-11-22 13:06:24,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:24,128 INFO L93 Difference]: Finished difference Result 179 states and 224 transitions. [2020-11-22 13:06:24,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-22 13:06:24,129 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-11-22 13:06:24,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:24,131 INFO L225 Difference]: With dead ends: 179 [2020-11-22 13:06:24,131 INFO L226 Difference]: Without dead ends: 174 [2020-11-22 13:06:24,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-11-22 13:06:24,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-11-22 13:06:24,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2020-11-22 13:06:24,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-22 13:06:24,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2020-11-22 13:06:24,146 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 25 [2020-11-22 13:06:24,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:24,146 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2020-11-22 13:06:24,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-22 13:06:24,146 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2020-11-22 13:06:24,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-22 13:06:24,147 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:24,148 INFO L422 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] [2020-11-22 13:06:24,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-22 13:06:24,363 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:24,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:24,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1179255384, now seen corresponding path program 1 times [2020-11-22 13:06:24,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:24,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317682673] [2020-11-22 13:06:24,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/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 [2020-11-22 13:06:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:24,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:06:24,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:24,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:24,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:24,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317682673] [2020-11-22 13:06:24,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:24,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2020-11-22 13:06:24,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413680877] [2020-11-22 13:06:24,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:06:24,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:24,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:06:24,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:06:24,495 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand 6 states. [2020-11-22 13:06:24,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:24,684 INFO L93 Difference]: Finished difference Result 159 states and 206 transitions. [2020-11-22 13:06:24,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 13:06:24,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-22 13:06:24,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:24,687 INFO L225 Difference]: With dead ends: 159 [2020-11-22 13:06:24,687 INFO L226 Difference]: Without dead ends: 140 [2020-11-22 13:06:24,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:06:24,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-22 13:06:24,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2020-11-22 13:06:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-22 13:06:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2020-11-22 13:06:24,704 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 25 [2020-11-22 13:06:24,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:24,704 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2020-11-22 13:06:24,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:06:24,705 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2020-11-22 13:06:24,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-22 13:06:24,708 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:24,708 INFO L422 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] [2020-11-22 13:06:24,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-22 13:06:24,924 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:24,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:24,925 INFO L82 PathProgramCache]: Analyzing trace with hash -390784430, now seen corresponding path program 1 times [2020-11-22 13:06:24,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:24,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754657339] [2020-11-22 13:06:24,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/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 [2020-11-22 13:06:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:24,997 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:25,047 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:25,113 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:06:25,115 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:06:25,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-22 13:06:25,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:25 BoogieIcfgContainer [2020-11-22 13:06:25,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:25,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:25,354 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:25,354 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:25,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:18" (3/4) ... [2020-11-22 13:06:25,357 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:06:25,427 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2329e1b5-a965-421e-a56e-9a5ed04da4a3/bin/utaipan/witness.graphml [2020-11-22 13:06:25,427 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:25,429 INFO L168 Benchmark]: Toolchain (without parser) took 8572.11 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 39.8 MB in the beginning and 36.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:25,430 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 41.4 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:25,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.02 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 40.5 MB in the end (delta: -981.5 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:25,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.83 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 38.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:25,432 INFO L168 Benchmark]: Boogie Preprocessor took 60.17 ms. Allocated memory is still 58.7 MB. Free memory was 38.2 MB in the beginning and 36.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:25,432 INFO L168 Benchmark]: RCFGBuilder took 850.73 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 36.1 MB in the beginning and 33.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:25,433 INFO L168 Benchmark]: TraceAbstraction took 7155.07 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 33.5 MB in the beginning and 39.4 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:25,434 INFO L168 Benchmark]: Witness Printer took 73.40 ms. Allocated memory is still 86.0 MB. Free memory was 39.4 MB in the beginning and 36.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:25,437 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 41.4 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 379.02 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 40.5 MB in the end (delta: -981.5 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.83 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 38.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.17 ms. Allocated memory is still 58.7 MB. Free memory was 38.2 MB in the beginning and 36.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 850.73 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 36.1 MB in the beginning and 33.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7155.07 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 33.5 MB in the beginning and 39.4 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Witness Printer took 73.40 ms. Allocated memory is still 86.0 MB. Free memory was 39.4 MB in the beginning and 36.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND FALSE !(!(cond)) [L107] delta = ea - eb [L8] COND TRUE !(cond) [L3] __assert_fail("0", "soft_float_4-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 93 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 944 SDtfs, 1516 SDslu, 4241 SDs, 0 SdLazy, 821 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 291 SyntacticMatches, 6 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 531 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 13170 SizeOfPredicates, 45 NumberOfNonLiveVariables, 589 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...