./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e04f2515dd5c7ce697460622800d33932bf1903 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e04f2515dd5c7ce697460622800d33932bf1903 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:38:01,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:38:01,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:38:01,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:38:01,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:38:01,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:38:01,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:38:01,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:38:01,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:38:01,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:38:01,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:38:01,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:38:01,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:38:01,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:38:01,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:38:01,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:38:01,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:38:01,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:38:01,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:38:01,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:38:01,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:38:01,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:38:01,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:38:01,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:38:01,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:38:01,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:38:01,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:38:01,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:38:01,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:38:01,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:38:01,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:38:01,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:38:01,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:38:01,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:38:01,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:38:01,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:38:01,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:38:01,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:38:01,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:38:01,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:38:01,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:38:01,872 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:38:01,896 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:38:01,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:38:01,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:38:01,907 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:38:01,908 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:38:01,908 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:38:01,908 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:38:01,908 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:38:01,908 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:38:01,909 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:38:01,909 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:38:01,909 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:38:01,909 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:38:01,909 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:38:01,910 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:38:01,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:38:01,910 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:38:01,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:38:01,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:38:01,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:38:01,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:38:01,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:38:01,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:38:01,913 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:38:01,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:38:01,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:38:01,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:38:01,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:38:01,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:38:01,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:38:01,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:38:01,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:38:01,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:38:01,915 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:38:01,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:38:01,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:38:01,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:38:01,916 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e04f2515dd5c7ce697460622800d33932bf1903 [2019-11-26 02:38:02,083 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:38:02,093 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:38:02,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:38:02,097 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:38:02,097 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:38:02,098 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-11-26 02:38:02,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/data/4a3100b7a/c8b18153c50f48e59c6fa90b66bdc3e4/FLAG0ebf2b415 [2019-11-26 02:38:02,579 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:38:02,580 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-11-26 02:38:02,590 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/data/4a3100b7a/c8b18153c50f48e59c6fa90b66bdc3e4/FLAG0ebf2b415 [2019-11-26 02:38:02,951 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/data/4a3100b7a/c8b18153c50f48e59c6fa90b66bdc3e4 [2019-11-26 02:38:02,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:38:02,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:38:02,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:38:02,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:38:02,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:38:02,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:38:02" (1/1) ... [2019-11-26 02:38:02,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1400e86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:02, skipping insertion in model container [2019-11-26 02:38:02,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:38:02" (1/1) ... [2019-11-26 02:38:02,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:38:03,031 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:38:03,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:38:03,345 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:38:03,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:38:03,401 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:38:03,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:03 WrapperNode [2019-11-26 02:38:03,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:38:03,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:38:03,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:38:03,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:38:03,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:03" (1/1) ... [2019-11-26 02:38:03,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:03" (1/1) ... [2019-11-26 02:38:03,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:38:03,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:38:03,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:38:03,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:38:03,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:03" (1/1) ... [2019-11-26 02:38:03,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:03" (1/1) ... [2019-11-26 02:38:03,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:03" (1/1) ... [2019-11-26 02:38:03,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:03" (1/1) ... [2019-11-26 02:38:03,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:03" (1/1) ... [2019-11-26 02:38:03,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:03" (1/1) ... [2019-11-26 02:38:03,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:03" (1/1) ... [2019-11-26 02:38:03,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:38:03,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:38:03,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:38:03,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:38:03,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:38:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:38:03,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:38:04,369 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:38:04,369 INFO L284 CfgBuilder]: Removed 30 assume(true) statements. [2019-11-26 02:38:04,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:38:04 BoogieIcfgContainer [2019-11-26 02:38:04,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:38:04,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:38:04,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:38:04,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:38:04,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:38:02" (1/3) ... [2019-11-26 02:38:04,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a254447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:38:04, skipping insertion in model container [2019-11-26 02:38:04,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:03" (2/3) ... [2019-11-26 02:38:04,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a254447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:38:04, skipping insertion in model container [2019-11-26 02:38:04,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:38:04" (3/3) ... [2019-11-26 02:38:04,378 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2019-11-26 02:38:04,387 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:38:04,392 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-26 02:38:04,400 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-26 02:38:04,426 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:38:04,427 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:38:04,427 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:38:04,427 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:38:04,427 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:38:04,427 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:38:04,428 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:38:04,428 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:38:04,452 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2019-11-26 02:38:04,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:38:04,457 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:38:04,458 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:38:04,459 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:38:04,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:38:04,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1740591867, now seen corresponding path program 1 times [2019-11-26 02:38:04,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:38:04,470 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858555826] [2019-11-26 02:38:04,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:38:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:38:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:04,814 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858555826] [2019-11-26 02:38:04,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:38:04,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:38:04,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840472897] [2019-11-26 02:38:04,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:38:04,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:38:04,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:38:04,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:38:04,836 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 7 states. [2019-11-26 02:38:05,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:38:05,068 INFO L93 Difference]: Finished difference Result 208 states and 309 transitions. [2019-11-26 02:38:05,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-26 02:38:05,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-11-26 02:38:05,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:38:05,081 INFO L225 Difference]: With dead ends: 208 [2019-11-26 02:38:05,081 INFO L226 Difference]: Without dead ends: 136 [2019-11-26 02:38:05,085 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:38:05,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-11-26 02:38:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 58. [2019-11-26 02:38:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-26 02:38:05,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2019-11-26 02:38:05,137 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 76 transitions. Word has length 10 [2019-11-26 02:38:05,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:38:05,138 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 76 transitions. [2019-11-26 02:38:05,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:38:05,138 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 76 transitions. [2019-11-26 02:38:05,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-26 02:38:05,139 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:38:05,139 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:38:05,140 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:38:05,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:38:05,140 INFO L82 PathProgramCache]: Analyzing trace with hash 942193295, now seen corresponding path program 1 times [2019-11-26 02:38:05,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:38:05,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246887421] [2019-11-26 02:38:05,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:38:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:38:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:05,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246887421] [2019-11-26 02:38:05,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:38:05,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:38:05,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860525313] [2019-11-26 02:38:05,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:38:05,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:38:05,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:38:05,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:38:05,331 INFO L87 Difference]: Start difference. First operand 58 states and 76 transitions. Second operand 5 states. [2019-11-26 02:38:05,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:38:05,442 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2019-11-26 02:38:05,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:38:05,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-26 02:38:05,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:38:05,444 INFO L225 Difference]: With dead ends: 87 [2019-11-26 02:38:05,444 INFO L226 Difference]: Without dead ends: 74 [2019-11-26 02:38:05,445 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:38:05,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-11-26 02:38:05,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 61. [2019-11-26 02:38:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-26 02:38:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2019-11-26 02:38:05,452 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 13 [2019-11-26 02:38:05,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:38:05,453 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2019-11-26 02:38:05,453 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:38:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2019-11-26 02:38:05,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 02:38:05,454 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:38:05,454 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:38:05,454 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:38:05,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:38:05,455 INFO L82 PathProgramCache]: Analyzing trace with hash -808206958, now seen corresponding path program 1 times [2019-11-26 02:38:05,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:38:05,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820210372] [2019-11-26 02:38:05,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:38:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:38:05,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:05,701 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820210372] [2019-11-26 02:38:05,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:38:05,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-26 02:38:05,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908594099] [2019-11-26 02:38:05,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:38:05,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:38:05,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:38:05,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:38:05,703 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand 10 states. [2019-11-26 02:38:06,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:38:06,334 INFO L93 Difference]: Finished difference Result 132 states and 171 transitions. [2019-11-26 02:38:06,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-26 02:38:06,335 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-26 02:38:06,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:38:06,336 INFO L225 Difference]: With dead ends: 132 [2019-11-26 02:38:06,336 INFO L226 Difference]: Without dead ends: 110 [2019-11-26 02:38:06,337 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2019-11-26 02:38:06,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-11-26 02:38:06,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 82. [2019-11-26 02:38:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-26 02:38:06,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 111 transitions. [2019-11-26 02:38:06,346 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 111 transitions. Word has length 14 [2019-11-26 02:38:06,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:38:06,346 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 111 transitions. [2019-11-26 02:38:06,346 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:38:06,346 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 111 transitions. [2019-11-26 02:38:06,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 02:38:06,347 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:38:06,348 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:38:06,348 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:38:06,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:38:06,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1184833808, now seen corresponding path program 1 times [2019-11-26 02:38:06,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:38:06,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451598410] [2019-11-26 02:38:06,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:38:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:38:06,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:06,609 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451598410] [2019-11-26 02:38:06,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:38:06,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:38:06,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596411614] [2019-11-26 02:38:06,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:38:06,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:38:06,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:38:06,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:38:06,611 INFO L87 Difference]: Start difference. First operand 82 states and 111 transitions. Second operand 8 states. [2019-11-26 02:38:06,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:38:06,884 INFO L93 Difference]: Finished difference Result 128 states and 158 transitions. [2019-11-26 02:38:06,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-26 02:38:06,887 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-11-26 02:38:06,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:38:06,888 INFO L225 Difference]: With dead ends: 128 [2019-11-26 02:38:06,888 INFO L226 Difference]: Without dead ends: 98 [2019-11-26 02:38:06,890 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:38:06,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-26 02:38:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 72. [2019-11-26 02:38:06,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-26 02:38:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2019-11-26 02:38:06,902 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 14 [2019-11-26 02:38:06,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:38:06,902 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2019-11-26 02:38:06,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:38:06,903 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2019-11-26 02:38:06,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:38:06,904 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:38:06,904 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:38:06,905 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:38:06,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:38:06,905 INFO L82 PathProgramCache]: Analyzing trace with hash 489965319, now seen corresponding path program 1 times [2019-11-26 02:38:06,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:38:06,906 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272190411] [2019-11-26 02:38:06,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:38:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:38:07,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:07,555 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272190411] [2019-11-26 02:38:07,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:38:07,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-26 02:38:07,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237523601] [2019-11-26 02:38:07,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-26 02:38:07,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:38:07,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-26 02:38:07,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:38:07,557 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand 13 states. [2019-11-26 02:38:08,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:38:08,526 INFO L93 Difference]: Finished difference Result 102 states and 127 transitions. [2019-11-26 02:38:08,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-26 02:38:08,527 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2019-11-26 02:38:08,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:38:08,528 INFO L225 Difference]: With dead ends: 102 [2019-11-26 02:38:08,528 INFO L226 Difference]: Without dead ends: 97 [2019-11-26 02:38:08,528 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2019-11-26 02:38:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-11-26 02:38:08,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 75. [2019-11-26 02:38:08,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-26 02:38:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2019-11-26 02:38:08,536 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 18 [2019-11-26 02:38:08,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:38:08,537 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2019-11-26 02:38:08,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-26 02:38:08,537 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2019-11-26 02:38:08,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:38:08,538 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:38:08,542 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:38:08,542 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:38:08,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:38:08,542 INFO L82 PathProgramCache]: Analyzing trace with hash 116995301, now seen corresponding path program 1 times [2019-11-26 02:38:08,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:38:08,543 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139574346] [2019-11-26 02:38:08,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:38:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:38:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:38:08,698 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:38:08,698 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:38:08,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:38:08 BoogieIcfgContainer [2019-11-26 02:38:08,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:38:08,737 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:38:08,737 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:38:08,737 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:38:08,738 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:38:04" (3/4) ... [2019-11-26 02:38:08,741 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:38:08,741 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:38:08,743 INFO L168 Benchmark]: Toolchain (without parser) took 5787.51 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 244.3 MB). Free memory was 948.7 MB in the beginning and 1.0 GB in the end (delta: -88.1 MB). Peak memory consumption was 156.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:38:08,743 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:38:08,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 190.8 MB). Free memory was 948.7 MB in the beginning and 1.2 GB in the end (delta: -234.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:38:08,744 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:38:08,745 INFO L168 Benchmark]: Boogie Preprocessor took 41.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:38:08,745 INFO L168 Benchmark]: RCFGBuilder took 880.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 65.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:38:08,746 INFO L168 Benchmark]: TraceAbstraction took 4365.40 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 53.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 75.1 MB). Peak memory consumption was 128.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:38:08,746 INFO L168 Benchmark]: Witness Printer took 3.75 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:38:08,749 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 446.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 190.8 MB). Free memory was 948.7 MB in the beginning and 1.2 GB in the end (delta: -234.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 880.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 65.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4365.40 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 53.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 75.1 MB). Peak memory consumption was 128.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.75 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add ; [L223] unsigned int zero ; [L224] int sa ; [L225] int sb ; [L226] int tmp ; [L227] int tmp___0 ; [L228] int tmp___1 ; [L229] int tmp___2 ; [L230] int tmp___3 ; [L231] int tmp___4 ; [L232] int tmp___5 ; [L233] int tmp___6 ; [L234] int tmp___7 ; [L235] int tmp___8 ; [L236] int tmp___9 ; [L237] int __retres23 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L241] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L242] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L243] b = base2flt(mb, eb) [L245] COND FALSE !(a < zero) [L248] COND TRUE a > zero [L249] tmp = 1 [L253] sa = tmp [L255] COND FALSE !(b < zero) [L258] COND TRUE b > zero [L259] tmp___0 = 1 [L263] sb = tmp___0 [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 6 error locations. Result: UNSAFE, OverallTime: 4.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 339 SDtfs, 802 SDslu, 1562 SDs, 0 SdLazy, 500 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 167 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 8494 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:38:10,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:38:10,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:38:10,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:38:10,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:38:10,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:38:10,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:38:10,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:38:10,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:38:10,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:38:10,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:38:10,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:38:10,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:38:10,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:38:10,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:38:10,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:38:10,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:38:10,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:38:10,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:38:10,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:38:10,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:38:10,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:38:10,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:38:10,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:38:10,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:38:10,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:38:10,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:38:10,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:38:10,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:38:10,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:38:10,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:38:10,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:38:10,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:38:10,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:38:10,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:38:10,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:38:10,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:38:10,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:38:10,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:38:10,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:38:10,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:38:10,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:38:10,616 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:38:10,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:38:10,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:38:10,618 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:38:10,618 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:38:10,618 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:38:10,618 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:38:10,619 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:38:10,619 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:38:10,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:38:10,620 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:38:10,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:38:10,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:38:10,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:38:10,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:38:10,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:38:10,622 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:38:10,622 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:38:10,622 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:38:10,622 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:38:10,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:38:10,623 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:38:10,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:38:10,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:38:10,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:38:10,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:38:10,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:38:10,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:38:10,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:38:10,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:38:10,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:38:10,625 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:38:10,625 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:38:10,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:38:10,626 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:38:10,626 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e04f2515dd5c7ce697460622800d33932bf1903 [2019-11-26 02:38:10,917 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:38:10,927 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:38:10,930 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:38:10,932 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:38:10,932 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:38:10,932 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-11-26 02:38:10,980 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/data/3f2f90144/9cd93369249c4fdd8542b43dc7d336f0/FLAGb082c0863 [2019-11-26 02:38:11,351 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:38:11,351 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-11-26 02:38:11,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/data/3f2f90144/9cd93369249c4fdd8542b43dc7d336f0/FLAGb082c0863 [2019-11-26 02:38:11,703 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/data/3f2f90144/9cd93369249c4fdd8542b43dc7d336f0 [2019-11-26 02:38:11,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:38:11,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:38:11,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:38:11,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:38:11,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:38:11,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:38:11" (1/1) ... [2019-11-26 02:38:11,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d234cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:11, skipping insertion in model container [2019-11-26 02:38:11,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:38:11" (1/1) ... [2019-11-26 02:38:11,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:38:11,757 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:38:11,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:38:11,992 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:38:12,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:38:12,109 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:38:12,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:12 WrapperNode [2019-11-26 02:38:12,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:38:12,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:38:12,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:38:12,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:38:12,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:12" (1/1) ... [2019-11-26 02:38:12,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:12" (1/1) ... [2019-11-26 02:38:12,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:38:12,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:38:12,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:38:12,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:38:12,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:12" (1/1) ... [2019-11-26 02:38:12,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:12" (1/1) ... [2019-11-26 02:38:12,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:12" (1/1) ... [2019-11-26 02:38:12,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:12" (1/1) ... [2019-11-26 02:38:12,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:12" (1/1) ... [2019-11-26 02:38:12,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:12" (1/1) ... [2019-11-26 02:38:12,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:12" (1/1) ... [2019-11-26 02:38:12,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:38:12,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:38:12,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:38:12,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:38:12,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:38:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:38:12,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:38:12,720 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:38:12,720 INFO L284 CfgBuilder]: Removed 30 assume(true) statements. [2019-11-26 02:38:12,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:38:12 BoogieIcfgContainer [2019-11-26 02:38:12,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:38:12,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:38:12,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:38:12,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:38:12,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:38:11" (1/3) ... [2019-11-26 02:38:12,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a0e892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:38:12, skipping insertion in model container [2019-11-26 02:38:12,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:38:12" (2/3) ... [2019-11-26 02:38:12,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a0e892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:38:12, skipping insertion in model container [2019-11-26 02:38:12,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:38:12" (3/3) ... [2019-11-26 02:38:12,728 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2019-11-26 02:38:12,736 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:38:12,742 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-26 02:38:12,750 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-26 02:38:12,768 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:38:12,769 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:38:12,769 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:38:12,769 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:38:12,769 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:38:12,770 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:38:12,770 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:38:12,770 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:38:12,786 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-11-26 02:38:12,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-26 02:38:12,790 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:38:12,791 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:38:12,792 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:38:12,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:38:12,797 INFO L82 PathProgramCache]: Analyzing trace with hash 934616753, now seen corresponding path program 1 times [2019-11-26 02:38:12,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:38:12,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1412941865] [2019-11-26 02:38:12,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:38:12,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:38:12,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:38:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:12,963 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:38:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:12,976 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1412941865] [2019-11-26 02:38:12,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:38:12,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-11-26 02:38:12,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295175899] [2019-11-26 02:38:12,991 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:38:12,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:38:13,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:38:13,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:38:13,006 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 7 states. [2019-11-26 02:38:13,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:38:13,596 INFO L93 Difference]: Finished difference Result 497 states and 751 transitions. [2019-11-26 02:38:13,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-26 02:38:13,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-11-26 02:38:13,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:38:13,624 INFO L225 Difference]: With dead ends: 497 [2019-11-26 02:38:13,624 INFO L226 Difference]: Without dead ends: 379 [2019-11-26 02:38:13,630 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:38:13,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2019-11-26 02:38:13,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 130. [2019-11-26 02:38:13,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-11-26 02:38:13,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 187 transitions. [2019-11-26 02:38:13,703 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 187 transitions. Word has length 17 [2019-11-26 02:38:13,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:38:13,704 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 187 transitions. [2019-11-26 02:38:13,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:38:13,705 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 187 transitions. [2019-11-26 02:38:13,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-26 02:38:13,706 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:38:13,707 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:38:13,908 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:13,909 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:38:13,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:38:13,910 INFO L82 PathProgramCache]: Analyzing trace with hash 216177638, now seen corresponding path program 1 times [2019-11-26 02:38:13,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:38:13,911 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2108022167] [2019-11-26 02:38:13,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:38:13,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:38:13,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:38:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:14,022 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:38:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:14,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2108022167] [2019-11-26 02:38:14,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:38:14,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-26 02:38:14,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747713371] [2019-11-26 02:38:14,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:38:14,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:38:14,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:38:14,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:38:14,060 INFO L87 Difference]: Start difference. First operand 130 states and 187 transitions. Second operand 5 states. [2019-11-26 02:38:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:38:14,243 INFO L93 Difference]: Finished difference Result 501 states and 705 transitions. [2019-11-26 02:38:14,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:38:14,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-11-26 02:38:14,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:38:14,248 INFO L225 Difference]: With dead ends: 501 [2019-11-26 02:38:14,249 INFO L226 Difference]: Without dead ends: 424 [2019-11-26 02:38:14,250 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:38:14,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2019-11-26 02:38:14,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 175. [2019-11-26 02:38:14,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-11-26 02:38:14,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 251 transitions. [2019-11-26 02:38:14,287 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 251 transitions. Word has length 21 [2019-11-26 02:38:14,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:38:14,288 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 251 transitions. [2019-11-26 02:38:14,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:38:14,288 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 251 transitions. [2019-11-26 02:38:14,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-26 02:38:14,294 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:38:14,295 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:38:14,498 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:14,506 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:38:14,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:38:14,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1163788538, now seen corresponding path program 1 times [2019-11-26 02:38:14,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:38:14,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2070247310] [2019-11-26 02:38:14,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:38:14,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:38:14,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:38:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:14,607 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:38:14,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:14,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2070247310] [2019-11-26 02:38:14,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:38:14,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-26 02:38:14,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913730938] [2019-11-26 02:38:14,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:38:14,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:38:14,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:38:14,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:38:14,627 INFO L87 Difference]: Start difference. First operand 175 states and 251 transitions. Second operand 5 states. [2019-11-26 02:38:14,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:38:14,760 INFO L93 Difference]: Finished difference Result 347 states and 483 transitions. [2019-11-26 02:38:14,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:38:14,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-11-26 02:38:14,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:38:14,763 INFO L225 Difference]: With dead ends: 347 [2019-11-26 02:38:14,763 INFO L226 Difference]: Without dead ends: 274 [2019-11-26 02:38:14,764 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:38:14,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2019-11-26 02:38:14,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 257. [2019-11-26 02:38:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2019-11-26 02:38:14,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 366 transitions. [2019-11-26 02:38:14,785 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 366 transitions. Word has length 25 [2019-11-26 02:38:14,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:38:14,786 INFO L462 AbstractCegarLoop]: Abstraction has 257 states and 366 transitions. [2019-11-26 02:38:14,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:38:14,786 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 366 transitions. [2019-11-26 02:38:14,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-26 02:38:14,789 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:38:14,789 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:38:14,993 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:14,993 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:38:14,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:38:14,994 INFO L82 PathProgramCache]: Analyzing trace with hash 611218824, now seen corresponding path program 1 times [2019-11-26 02:38:14,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:38:14,994 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [648177299] [2019-11-26 02:38:14,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:38:15,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-26 02:38:15,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:38:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:15,119 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:38:15,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:15,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [648177299] [2019-11-26 02:38:15,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:38:15,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-26 02:38:15,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093279950] [2019-11-26 02:38:15,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:38:15,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:38:15,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:38:15,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:38:15,232 INFO L87 Difference]: Start difference. First operand 257 states and 366 transitions. Second operand 8 states. [2019-11-26 02:38:17,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:38:17,530 INFO L93 Difference]: Finished difference Result 1091 states and 1532 transitions. [2019-11-26 02:38:17,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-26 02:38:17,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-11-26 02:38:17,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:38:17,536 INFO L225 Difference]: With dead ends: 1091 [2019-11-26 02:38:17,537 INFO L226 Difference]: Without dead ends: 974 [2019-11-26 02:38:17,538 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-11-26 02:38:17,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2019-11-26 02:38:17,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 277. [2019-11-26 02:38:17,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2019-11-26 02:38:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 392 transitions. [2019-11-26 02:38:17,565 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 392 transitions. Word has length 25 [2019-11-26 02:38:17,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:38:17,566 INFO L462 AbstractCegarLoop]: Abstraction has 277 states and 392 transitions. [2019-11-26 02:38:17,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:38:17,566 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 392 transitions. [2019-11-26 02:38:17,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-26 02:38:17,567 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:38:17,567 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:38:17,769 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:17,769 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:38:17,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:38:17,769 INFO L82 PathProgramCache]: Analyzing trace with hash 611278406, now seen corresponding path program 1 times [2019-11-26 02:38:17,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:38:17,770 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1803875835] [2019-11-26 02:38:17,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:38:17,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:38:17,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:38:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:17,871 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:38:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:17,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1803875835] [2019-11-26 02:38:17,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:38:17,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-11-26 02:38:17,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024192033] [2019-11-26 02:38:17,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:38:17,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:38:17,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:38:17,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:38:17,876 INFO L87 Difference]: Start difference. First operand 277 states and 392 transitions. Second operand 6 states. [2019-11-26 02:38:18,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:38:18,048 INFO L93 Difference]: Finished difference Result 377 states and 518 transitions. [2019-11-26 02:38:18,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:38:18,049 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-11-26 02:38:18,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:38:18,052 INFO L225 Difference]: With dead ends: 377 [2019-11-26 02:38:18,052 INFO L226 Difference]: Without dead ends: 310 [2019-11-26 02:38:18,052 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:38:18,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2019-11-26 02:38:18,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 257. [2019-11-26 02:38:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2019-11-26 02:38:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 361 transitions. [2019-11-26 02:38:18,076 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 361 transitions. Word has length 25 [2019-11-26 02:38:18,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:38:18,076 INFO L462 AbstractCegarLoop]: Abstraction has 257 states and 361 transitions. [2019-11-26 02:38:18,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:38:18,077 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 361 transitions. [2019-11-26 02:38:18,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-26 02:38:18,078 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:38:18,078 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:38:18,285 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:18,285 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:38:18,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:38:18,286 INFO L82 PathProgramCache]: Analyzing trace with hash -873114857, now seen corresponding path program 1 times [2019-11-26 02:38:18,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:38:18,286 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1663737970] [2019-11-26 02:38:18,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:38:18,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:38:18,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:38:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:18,366 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:38:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:18,431 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1663737970] [2019-11-26 02:38:18,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:38:18,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-26 02:38:18,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881222240] [2019-11-26 02:38:18,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:38:18,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:38:18,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:38:18,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:38:18,432 INFO L87 Difference]: Start difference. First operand 257 states and 361 transitions. Second operand 10 states. [2019-11-26 02:38:19,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:38:19,015 INFO L93 Difference]: Finished difference Result 502 states and 693 transitions. [2019-11-26 02:38:19,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-26 02:38:19,022 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2019-11-26 02:38:19,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:38:19,025 INFO L225 Difference]: With dead ends: 502 [2019-11-26 02:38:19,025 INFO L226 Difference]: Without dead ends: 439 [2019-11-26 02:38:19,025 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2019-11-26 02:38:19,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2019-11-26 02:38:19,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 267. [2019-11-26 02:38:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2019-11-26 02:38:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 376 transitions. [2019-11-26 02:38:19,043 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 376 transitions. Word has length 29 [2019-11-26 02:38:19,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:38:19,043 INFO L462 AbstractCegarLoop]: Abstraction has 267 states and 376 transitions. [2019-11-26 02:38:19,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:38:19,044 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 376 transitions. [2019-11-26 02:38:19,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-26 02:38:19,044 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:38:19,045 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:38:19,246 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:19,246 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:38:19,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:38:19,246 INFO L82 PathProgramCache]: Analyzing trace with hash -871267815, now seen corresponding path program 1 times [2019-11-26 02:38:19,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:38:19,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [979950388] [2019-11-26 02:38:19,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:38:19,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:38:19,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:38:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:19,348 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:38:19,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:19,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [979950388] [2019-11-26 02:38:19,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:38:19,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:38:19,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192190872] [2019-11-26 02:38:19,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:38:19,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:38:19,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:38:19,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:38:19,372 INFO L87 Difference]: Start difference. First operand 267 states and 376 transitions. Second operand 6 states. [2019-11-26 02:38:19,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:38:19,442 INFO L93 Difference]: Finished difference Result 514 states and 709 transitions. [2019-11-26 02:38:19,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:38:19,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2019-11-26 02:38:19,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:38:19,445 INFO L225 Difference]: With dead ends: 514 [2019-11-26 02:38:19,445 INFO L226 Difference]: Without dead ends: 427 [2019-11-26 02:38:19,446 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:38:19,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2019-11-26 02:38:19,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 349. [2019-11-26 02:38:19,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2019-11-26 02:38:19,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 480 transitions. [2019-11-26 02:38:19,471 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 480 transitions. Word has length 29 [2019-11-26 02:38:19,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:38:19,472 INFO L462 AbstractCegarLoop]: Abstraction has 349 states and 480 transitions. [2019-11-26 02:38:19,472 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:38:19,472 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 480 transitions. [2019-11-26 02:38:19,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-26 02:38:19,473 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:38:19,474 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:38:19,676 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:19,677 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:38:19,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:38:19,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1737423153, now seen corresponding path program 1 times [2019-11-26 02:38:19,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:38:19,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1893738814] [2019-11-26 02:38:19,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:38:19,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:38:19,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:38:19,789 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:38:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:19,805 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:38:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:19,836 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1893738814] [2019-11-26 02:38:19,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:38:19,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:38:19,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950059368] [2019-11-26 02:38:19,837 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:38:19,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:38:19,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:38:19,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:38:19,837 INFO L87 Difference]: Start difference. First operand 349 states and 480 transitions. Second operand 6 states. [2019-11-26 02:38:20,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:38:20,030 INFO L93 Difference]: Finished difference Result 480 states and 656 transitions. [2019-11-26 02:38:20,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:38:20,031 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2019-11-26 02:38:20,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:38:20,034 INFO L225 Difference]: With dead ends: 480 [2019-11-26 02:38:20,034 INFO L226 Difference]: Without dead ends: 478 [2019-11-26 02:38:20,035 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:38:20,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2019-11-26 02:38:20,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 347. [2019-11-26 02:38:20,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2019-11-26 02:38:20,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 473 transitions. [2019-11-26 02:38:20,063 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 473 transitions. Word has length 29 [2019-11-26 02:38:20,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:38:20,064 INFO L462 AbstractCegarLoop]: Abstraction has 347 states and 473 transitions. [2019-11-26 02:38:20,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:38:20,065 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 473 transitions. [2019-11-26 02:38:20,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-26 02:38:20,066 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:38:20,066 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:38:20,267 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:20,268 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:38:20,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:38:20,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1174763763, now seen corresponding path program 1 times [2019-11-26 02:38:20,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:38:20,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [600061165] [2019-11-26 02:38:20,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:38:20,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:38:20,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:38:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:20,328 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:38:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:38:20,342 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [600061165] [2019-11-26 02:38:20,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:38:20,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 02:38:20,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655588343] [2019-11-26 02:38:20,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:38:20,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:38:20,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:38:20,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:38:20,344 INFO L87 Difference]: Start difference. First operand 347 states and 473 transitions. Second operand 6 states. [2019-11-26 02:38:20,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:38:20,442 INFO L93 Difference]: Finished difference Result 406 states and 547 transitions. [2019-11-26 02:38:20,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:38:20,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-11-26 02:38:20,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:38:20,446 INFO L225 Difference]: With dead ends: 406 [2019-11-26 02:38:20,446 INFO L226 Difference]: Without dead ends: 401 [2019-11-26 02:38:20,446 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:38:20,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2019-11-26 02:38:20,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 347. [2019-11-26 02:38:20,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2019-11-26 02:38:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 470 transitions. [2019-11-26 02:38:20,471 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 470 transitions. Word has length 30 [2019-11-26 02:38:20,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:38:20,472 INFO L462 AbstractCegarLoop]: Abstraction has 347 states and 470 transitions. [2019-11-26 02:38:20,472 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:38:20,472 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 470 transitions. [2019-11-26 02:38:20,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-26 02:38:20,475 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:38:20,475 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:38:20,676 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:20,684 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:38:20,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:38:20,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1078465644, now seen corresponding path program 1 times [2019-11-26 02:38:20,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:38:20,685 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1205901178] [2019-11-26 02:38:20,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:38:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:38:20,897 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:38:20,897 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:38:21,100 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:38:21,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:38:21 BoogieIcfgContainer [2019-11-26 02:38:21,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:38:21,129 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:38:21,130 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:38:21,130 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:38:21,130 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:38:12" (3/4) ... [2019-11-26 02:38:21,132 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:38:21,189 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3b1b2295-1e0a-4c07-9bbe-feb1b92d09b6/bin/utaipan/witness.graphml [2019-11-26 02:38:21,189 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:38:21,191 INFO L168 Benchmark]: Toolchain (without parser) took 9483.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 214.4 MB). Free memory was 951.0 MB in the beginning and 924.4 MB in the end (delta: 26.6 MB). Peak memory consumption was 241.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:38:21,192 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:38:21,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -203.7 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:38:21,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:38:21,193 INFO L168 Benchmark]: Boogie Preprocessor took 33.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:38:21,193 INFO L168 Benchmark]: RCFGBuilder took 527.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:38:21,194 INFO L168 Benchmark]: TraceAbstraction took 8406.96 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 56.1 MB). Free memory was 1.1 GB in the beginning and 924.4 MB in the end (delta: 185.5 MB). Peak memory consumption was 241.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:38:21,194 INFO L168 Benchmark]: Witness Printer took 60.10 ms. Allocated memory is still 1.2 GB. Free memory is still 924.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:38:21,196 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 402.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -203.7 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 527.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8406.96 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 56.1 MB). Free memory was 1.1 GB in the beginning and 924.4 MB in the end (delta: 185.5 MB). Peak memory consumption was 241.6 MB. Max. memory is 11.5 GB. * Witness Printer took 60.10 ms. Allocated memory is still 1.2 GB. Free memory is still 924.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add ; [L223] unsigned int zero ; [L224] int sa ; [L225] int sb ; [L226] int tmp ; [L227] int tmp___0 ; [L228] int tmp___1 ; [L229] int tmp___2 ; [L230] int tmp___3 ; [L231] int tmp___4 ; [L232] int tmp___5 ; [L233] int tmp___6 ; [L234] int tmp___7 ; [L235] int tmp___8 ; [L236] int tmp___9 ; [L237] int __retres23 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L241] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L242] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L243] b = base2flt(mb, eb) [L245] COND FALSE !(a < zero) [L248] COND TRUE a > zero [L249] tmp = 1 [L253] sa = tmp [L255] COND FALSE !(b < zero) [L258] COND TRUE b > zero [L259] tmp___0 = 1 [L263] sb = tmp___0 [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND FALSE !(!(cond)) [L105] delta = ea - eb [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 95 locations, 6 error locations. Result: UNSAFE, OverallTime: 8.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1327 SDtfs, 3512 SDslu, 5147 SDs, 0 SdLazy, 1110 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 485 GetRequests, 402 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=349occurred 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: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1700 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 442 ConstructedInterpolants, 6 QuantifiedInterpolants, 19474 SizeOfPredicates, 46 NumberOfNonLiveVariables, 522 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...