./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/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 a482892abf67e79a3ae4664db384c404b0bcc555 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/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 a482892abf67e79a3ae4664db384c404b0bcc555 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-cad4683 [2019-10-22 11:21:34,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:34,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:35,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:35,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:35,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:35,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:35,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:35,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:35,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:35,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:35,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:35,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:35,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:35,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:35,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:35,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:35,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:35,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:35,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:35,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:35,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:35,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:35,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:35,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:35,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:35,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:35,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:35,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:35,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:35,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:35,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:35,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:35,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:35,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:35,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:35,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:35,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:35,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:35,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:35,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:35,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:21:35,061 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:35,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:35,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:35,071 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:35,071 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:35,071 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:35,071 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:21:35,071 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:35,072 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:35,072 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:21:35,072 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:21:35,072 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:35,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:35,073 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:35,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:21:35,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:35,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:35,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:35,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:35,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:35,074 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:35,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:35,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:35,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:35,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:35,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:35,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:35,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:35,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:35,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:35,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:35,076 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:21:35,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:21:35,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:35,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:35,079 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/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/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 -> a482892abf67e79a3ae4664db384c404b0bcc555 [2019-10-22 11:21:35,109 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:35,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:35,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:35,127 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:35,127 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:35,127 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-10-22 11:21:35,170 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/data/e7ec19eef/ac2ee2cf3d4b455b9eb197742d940cd5/FLAG24b737d4c [2019-10-22 11:21:35,617 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:35,619 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-10-22 11:21:35,628 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/data/e7ec19eef/ac2ee2cf3d4b455b9eb197742d940cd5/FLAG24b737d4c [2019-10-22 11:21:35,994 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/data/e7ec19eef/ac2ee2cf3d4b455b9eb197742d940cd5 [2019-10-22 11:21:35,997 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:35,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:35,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:35,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:36,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:36,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:35" (1/1) ... [2019-10-22 11:21:36,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0eec17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:36, skipping insertion in model container [2019-10-22 11:21:36,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:35" (1/1) ... [2019-10-22 11:21:36,012 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:36,052 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:36,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:36,303 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:36,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:36,375 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:36,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:36 WrapperNode [2019-10-22 11:21:36,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:36,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:36,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:36,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:36,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:36" (1/1) ... [2019-10-22 11:21:36,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:36" (1/1) ... [2019-10-22 11:21:36,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:36,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:36,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:36,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:36,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:36" (1/1) ... [2019-10-22 11:21:36,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:36" (1/1) ... [2019-10-22 11:21:36,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:36" (1/1) ... [2019-10-22 11:21:36,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:36" (1/1) ... [2019-10-22 11:21:36,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:36" (1/1) ... [2019-10-22 11:21:36,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:36" (1/1) ... [2019-10-22 11:21:36,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:36" (1/1) ... [2019-10-22 11:21:36,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:36,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:36,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:36,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:36,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/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 [2019-10-22 11:21:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:36,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:36,601 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-22 11:21:37,004 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2019-10-22 11:21:37,004 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2019-10-22 11:21:37,006 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:37,006 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 11:21:37,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:37 BoogieIcfgContainer [2019-10-22 11:21:37,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:37,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:37,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:37,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:37,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:35" (1/3) ... [2019-10-22 11:21:37,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd5bf2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:37, skipping insertion in model container [2019-10-22 11:21:37,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:36" (2/3) ... [2019-10-22 11:21:37,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd5bf2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:37, skipping insertion in model container [2019-10-22 11:21:37,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:37" (3/3) ... [2019-10-22 11:21:37,014 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2019-10-22 11:21:37,022 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:37,029 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:21:37,038 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:21:37,058 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:37,059 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:37,059 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:37,059 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:37,059 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:37,059 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:37,059 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:37,059 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:37,074 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-10-22 11:21:37,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:21:37,084 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:37,085 INFO L380 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] [2019-10-22 11:21:37,087 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:37,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:37,092 INFO L82 PathProgramCache]: Analyzing trace with hash 511659491, now seen corresponding path program 1 times [2019-10-22 11:21:37,101 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:37,101 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193537458] [2019-10-22 11:21:37,101 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:37,101 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:37,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:37,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:37,253 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193537458] [2019-10-22 11:21:37,254 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:37,254 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:21:37,254 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145488162] [2019-10-22 11:21:37,258 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:37,259 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:37,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:37,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:37,276 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-10-22 11:21:37,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:37,454 INFO L93 Difference]: Finished difference Result 246 states and 422 transitions. [2019-10-22 11:21:37,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:37,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-22 11:21:37,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:37,465 INFO L225 Difference]: With dead ends: 246 [2019-10-22 11:21:37,466 INFO L226 Difference]: Without dead ends: 112 [2019-10-22 11:21:37,469 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:37,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-10-22 11:21:37,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-10-22 11:21:37,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-10-22 11:21:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions. [2019-10-22 11:21:37,503 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 24 [2019-10-22 11:21:37,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:37,504 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 170 transitions. [2019-10-22 11:21:37,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:37,504 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions. [2019-10-22 11:21:37,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 11:21:37,505 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:37,505 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 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, 1] [2019-10-22 11:21:37,505 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:37,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:37,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1971493731, now seen corresponding path program 1 times [2019-10-22 11:21:37,506 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:37,506 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300954837] [2019-10-22 11:21:37,506 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:37,506 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:37,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:37,562 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300954837] [2019-10-22 11:21:37,562 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:37,562 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:37,563 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918975353] [2019-10-22 11:21:37,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:37,564 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:37,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:37,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:37,565 INFO L87 Difference]: Start difference. First operand 112 states and 170 transitions. Second operand 3 states. [2019-10-22 11:21:37,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:37,684 INFO L93 Difference]: Finished difference Result 232 states and 355 transitions. [2019-10-22 11:21:37,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:37,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-22 11:21:37,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:37,686 INFO L225 Difference]: With dead ends: 232 [2019-10-22 11:21:37,686 INFO L226 Difference]: Without dead ends: 130 [2019-10-22 11:21:37,687 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:37,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-10-22 11:21:37,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-10-22 11:21:37,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-22 11:21:37,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 190 transitions. [2019-10-22 11:21:37,696 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 190 transitions. Word has length 36 [2019-10-22 11:21:37,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:37,696 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 190 transitions. [2019-10-22 11:21:37,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:37,696 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 190 transitions. [2019-10-22 11:21:37,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 11:21:37,697 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:37,697 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-22 11:21:37,697 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:37,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:37,698 INFO L82 PathProgramCache]: Analyzing trace with hash 441356492, now seen corresponding path program 1 times [2019-10-22 11:21:37,698 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:37,698 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134833296] [2019-10-22 11:21:37,698 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:37,698 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:37,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:21:37,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134833296] [2019-10-22 11:21:37,757 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:37,757 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:37,757 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076801755] [2019-10-22 11:21:37,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:37,758 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:37,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:37,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:37,758 INFO L87 Difference]: Start difference. First operand 127 states and 190 transitions. Second operand 3 states. [2019-10-22 11:21:37,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:37,892 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2019-10-22 11:21:37,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:37,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-10-22 11:21:37,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:37,895 INFO L225 Difference]: With dead ends: 265 [2019-10-22 11:21:37,895 INFO L226 Difference]: Without dead ends: 148 [2019-10-22 11:21:37,896 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:37,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-10-22 11:21:37,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-10-22 11:21:37,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-22 11:21:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 212 transitions. [2019-10-22 11:21:37,905 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 212 transitions. Word has length 50 [2019-10-22 11:21:37,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:37,905 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 212 transitions. [2019-10-22 11:21:37,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:37,905 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 212 transitions. [2019-10-22 11:21:37,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-22 11:21:37,906 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:37,906 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1] [2019-10-22 11:21:37,907 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:37,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:37,907 INFO L82 PathProgramCache]: Analyzing trace with hash -394489400, now seen corresponding path program 1 times [2019-10-22 11:21:37,907 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:37,907 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948614971] [2019-10-22 11:21:37,908 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:37,908 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:37,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:38,042 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:21:38,042 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:21:38,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:21:38 BoogieIcfgContainer [2019-10-22 11:21:38,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:21:38,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:21:38,107 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:21:38,107 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:21:38,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:37" (3/4) ... [2019-10-22 11:21:38,110 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 11:21:38,112 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:21:38,114 INFO L168 Benchmark]: Toolchain (without parser) took 2115.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 943.1 MB in the beginning and 954.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 123.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:38,115 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:38,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -180.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:38,120 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.35 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. [2019-10-22 11:21:38,121 INFO L168 Benchmark]: Boogie Preprocessor took 28.54 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. [2019-10-22 11:21:38,121 INFO L168 Benchmark]: RCFGBuilder took 555.51 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: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:38,122 INFO L168 Benchmark]: TraceAbstraction took 1098.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 954.2 MB in the end (delta: 113.7 MB). Peak memory consumption was 113.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:38,122 INFO L168 Benchmark]: Witness Printer took 5.67 ms. Allocated memory is still 1.2 GB. Free memory is still 954.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:38,124 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 376.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -180.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.54 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 555.51 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: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1098.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 954.2 MB in the end (delta: 113.7 MB). Peak memory consumption was 113.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.67 ms. Allocated memory is still 1.2 GB. Free memory is still 954.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 614]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 301. Possible FailurePath: [L623] int __retres1 ; [L9] int s__info_callback = __VERIFIER_nondet_int(); [L10] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L11] int s__state ; [L12] int s__new_session ; [L13] int s__server ; [L14] unsigned int s__version = __VERIFIER_nondet_uint(); [L15] int s__type ; [L16] int s__init_num ; [L17] int s__bbio = __VERIFIER_nondet_int(); [L18] int s__wbio = __VERIFIER_nondet_int(); [L19] int s__hit = __VERIFIER_nondet_int(); [L20] int s__rwstate ; [L21] int s__init_buf___0 ; [L22] int s__debug = __VERIFIER_nondet_int(); [L23] int s__shutdown ; [L24] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L25] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L26] unsigned int s__ctx__stats__sess_connect ; [L27] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L29] int s__s3__change_cipher_spec ; [L30] int s__s3__flags ; [L31] int s__s3__delay_buf_pop_ret ; [L32] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L33] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__next_state___0 ; [L38] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L39] int s__session__cipher ; [L40] int s__session__compress_meth ; [L41] int buf ; [L42] unsigned long tmp ; [L43] unsigned long l ; [L44] int num1 ; [L45] int cb ; [L46] int ret ; [L47] int new_state ; [L48] int state ; [L49] int skip ; [L50] int tmp___0 ; [L51] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L52] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L53] int tmp___3 = __VERIFIER_nondet_int(); [L54] int tmp___4 = __VERIFIER_nondet_int(); [L55] int tmp___5 = __VERIFIER_nondet_int(); [L56] int tmp___6 = __VERIFIER_nondet_int(); [L57] int tmp___7 = __VERIFIER_nondet_int(); [L58] int tmp___8 = __VERIFIER_nondet_int(); [L59] int tmp___9 = __VERIFIER_nondet_int(); [L60] int blastFlag ; [L61] int ag_X ; [L62] int ag_Y ; [L63] int ag_Z ; [L64] int __retres60 ; [L67] s__state = 12292 [L68] blastFlag = 0 [L69] tmp = __VERIFIER_nondet_int() [L70] cb = 0 [L71] ret = -1 [L72] skip = 0 [L73] tmp___0 = 0 [L74] COND TRUE s__info_callback != 0 [L75] cb = s__info_callback [L83] s__in_handshake = s__in_handshake + 1 [L84] COND FALSE !(tmp___1 + 12288) [L93] COND TRUE \read(s__hit) [L94] ag_Y = 208 [L99] COND TRUE 1 [L101] state = s__state [L102] COND TRUE s__state == 12292 [L205] s__new_session = 1 [L206] s__state = 4096 [L207] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L212] s__server = 0 [L213] COND TRUE cb != 0 [L218] COND FALSE !(s__version + 65280 != 768) [L224] s__type = 4096 [L225] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L243] COND FALSE !(! tmp___4) [L249] COND FALSE !(! tmp___5) [L255] s__state = 4368 [L256] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L257] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND TRUE s__state == 4368 [L261] s__shutdown = 0 [L262] ret = __VERIFIER_nondet_int() [L263] COND TRUE blastFlag == 0 [L264] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] ag_X = s__state - 32 [L275] s__init_num = 0 [L276] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND TRUE s__state == 4384 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L294] COND FALSE !(ret <= 0) [L299] s__state = ag_X [L300] COND TRUE \read(s__hit) [L301] s__state = s__state | ag_Y [L305] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND FALSE !(s__state == 4416) [L138] COND FALSE !(s__state == 4417) [L141] COND TRUE s__state == 4432 [L351] ret = __VERIFIER_nondet_int() [L352] COND TRUE blastFlag <= 5 [L614] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 544 SDtfs, 37 SDslu, 265 SDs, 0 SdLazy, 283 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred 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, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 6451 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 19/19 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-cad4683 [2019-10-22 11:21:40,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:40,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:40,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:40,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:40,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:40,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:40,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:40,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:40,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:40,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:40,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:40,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:40,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:40,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:40,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:40,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:40,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:40,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:40,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:40,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:40,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:40,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:40,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:40,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:40,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:40,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:40,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:40,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:40,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:40,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:40,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:40,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:40,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:40,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:40,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:40,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:40,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:40,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:40,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:40,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:40,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:21:40,202 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:40,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:40,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:40,203 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:40,203 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:40,203 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:40,203 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:40,203 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:40,204 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:40,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:40,205 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:40,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:40,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:40,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:40,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:40,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:40,206 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:21:40,206 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:21:40,207 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:40,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:40,207 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:21:40,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:40,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:40,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:40,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:40,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:40,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:40,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:40,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:40,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:40,209 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:21:40,210 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:21:40,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:40,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:40,210 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/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/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 -> a482892abf67e79a3ae4664db384c404b0bcc555 [2019-10-22 11:21:40,243 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:40,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:40,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:40,260 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:40,260 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:40,261 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-10-22 11:21:40,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/data/3dde49a9b/8f67b540b2d443ae976dab62ddd4e5b1/FLAGe749e8590 [2019-10-22 11:21:40,696 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:40,704 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-10-22 11:21:40,712 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/data/3dde49a9b/8f67b540b2d443ae976dab62ddd4e5b1/FLAGe749e8590 [2019-10-22 11:21:41,057 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/data/3dde49a9b/8f67b540b2d443ae976dab62ddd4e5b1 [2019-10-22 11:21:41,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:41,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:41,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:41,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:41,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:41,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:41" (1/1) ... [2019-10-22 11:21:41,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@339d13da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:41, skipping insertion in model container [2019-10-22 11:21:41,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:41" (1/1) ... [2019-10-22 11:21:41,076 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:41,121 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:41,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:41,370 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:41,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:41,543 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:41,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:41 WrapperNode [2019-10-22 11:21:41,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:41,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:41,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:41,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:41,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:41" (1/1) ... [2019-10-22 11:21:41,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:41" (1/1) ... [2019-10-22 11:21:41,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:41,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:41,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:41,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:41,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:41" (1/1) ... [2019-10-22 11:21:41,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:41" (1/1) ... [2019-10-22 11:21:41,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:41" (1/1) ... [2019-10-22 11:21:41,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:41" (1/1) ... [2019-10-22 11:21:41,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:41" (1/1) ... [2019-10-22 11:21:41,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:41" (1/1) ... [2019-10-22 11:21:41,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:41" (1/1) ... [2019-10-22 11:21:41,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:41,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:41,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:41,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:41,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/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 [2019-10-22 11:21:41,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:41,858 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-22 11:21:42,308 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2019-10-22 11:21:42,308 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2019-10-22 11:21:42,309 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:42,309 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 11:21:42,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:42 BoogieIcfgContainer [2019-10-22 11:21:42,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:42,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:42,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:42,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:42,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:41" (1/3) ... [2019-10-22 11:21:42,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c3127f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:42, skipping insertion in model container [2019-10-22 11:21:42,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:41" (2/3) ... [2019-10-22 11:21:42,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c3127f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:42, skipping insertion in model container [2019-10-22 11:21:42,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:42" (3/3) ... [2019-10-22 11:21:42,318 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2019-10-22 11:21:42,327 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:42,334 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:21:42,343 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:21:42,374 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:42,374 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:42,374 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:42,374 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:42,374 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:42,375 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:42,375 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:42,375 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:42,390 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-10-22 11:21:42,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:21:42,396 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:42,397 INFO L380 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] [2019-10-22 11:21:42,399 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:42,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:42,405 INFO L82 PathProgramCache]: Analyzing trace with hash 511659491, now seen corresponding path program 1 times [2019-10-22 11:21:42,414 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:42,415 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [919962252] [2019-10-22 11:21:42,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/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 [2019-10-22 11:21:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:42,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:21:42,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:42,572 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:42,580 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [919962252] [2019-10-22 11:21:42,580 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:42,581 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:21:42,581 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242080561] [2019-10-22 11:21:42,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:42,585 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:42,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:42,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:42,600 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-10-22 11:21:42,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:42,806 INFO L93 Difference]: Finished difference Result 246 states and 422 transitions. [2019-10-22 11:21:42,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:42,808 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-22 11:21:42,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:42,823 INFO L225 Difference]: With dead ends: 246 [2019-10-22 11:21:42,823 INFO L226 Difference]: Without dead ends: 112 [2019-10-22 11:21:42,826 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:42,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-10-22 11:21:42,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-10-22 11:21:42,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-10-22 11:21:42,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions. [2019-10-22 11:21:42,867 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 24 [2019-10-22 11:21:42,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:42,867 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 170 transitions. [2019-10-22 11:21:42,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:42,867 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions. [2019-10-22 11:21:42,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 11:21:42,869 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:42,869 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 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, 1] [2019-10-22 11:21:43,070 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:43,070 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:43,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:43,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1971493731, now seen corresponding path program 1 times [2019-10-22 11:21:43,071 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:43,072 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [536596495] [2019-10-22 11:21:43,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/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 [2019-10-22 11:21:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:43,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:21:43,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:43,156 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:43,161 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [536596495] [2019-10-22 11:21:43,162 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:43,162 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:21:43,162 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106170759] [2019-10-22 11:21:43,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:43,164 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:43,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:43,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:43,165 INFO L87 Difference]: Start difference. First operand 112 states and 170 transitions. Second operand 3 states. [2019-10-22 11:21:43,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:43,325 INFO L93 Difference]: Finished difference Result 232 states and 355 transitions. [2019-10-22 11:21:43,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:43,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-22 11:21:43,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:43,327 INFO L225 Difference]: With dead ends: 232 [2019-10-22 11:21:43,327 INFO L226 Difference]: Without dead ends: 130 [2019-10-22 11:21:43,328 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:43,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-10-22 11:21:43,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-10-22 11:21:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-22 11:21:43,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 190 transitions. [2019-10-22 11:21:43,340 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 190 transitions. Word has length 36 [2019-10-22 11:21:43,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:43,341 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 190 transitions. [2019-10-22 11:21:43,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:43,341 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 190 transitions. [2019-10-22 11:21:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 11:21:43,342 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:43,342 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-22 11:21:43,543 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:43,543 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:43,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:43,545 INFO L82 PathProgramCache]: Analyzing trace with hash 441356492, now seen corresponding path program 1 times [2019-10-22 11:21:43,545 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:43,546 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1765792813] [2019-10-22 11:21:43,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/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 [2019-10-22 11:21:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:43,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:21:43,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:21:43,650 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:21:43,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1765792813] [2019-10-22 11:21:43,656 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:43,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:21:43,657 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128329937] [2019-10-22 11:21:43,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:43,658 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:43,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:43,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:43,658 INFO L87 Difference]: Start difference. First operand 127 states and 190 transitions. Second operand 3 states. [2019-10-22 11:21:43,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:43,794 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2019-10-22 11:21:43,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:43,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-10-22 11:21:43,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:43,796 INFO L225 Difference]: With dead ends: 265 [2019-10-22 11:21:43,796 INFO L226 Difference]: Without dead ends: 148 [2019-10-22 11:21:43,797 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:43,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-10-22 11:21:43,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-10-22 11:21:43,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-22 11:21:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 212 transitions. [2019-10-22 11:21:43,808 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 212 transitions. Word has length 50 [2019-10-22 11:21:43,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:43,809 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 212 transitions. [2019-10-22 11:21:43,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:43,809 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 212 transitions. [2019-10-22 11:21:43,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-22 11:21:43,810 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:43,811 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1] [2019-10-22 11:21:44,011 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:44,012 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:44,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:44,012 INFO L82 PathProgramCache]: Analyzing trace with hash -394489400, now seen corresponding path program 1 times [2019-10-22 11:21:44,013 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:44,013 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2092067369] [2019-10-22 11:21:44,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/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 [2019-10-22 11:21:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:44,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:21:44,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:44,196 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 11:21:44,197 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 11:21:44,304 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2092067369] [2019-10-22 11:21:44,304 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592654236] [2019-10-22 11:21:44,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:44,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:21:44,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:44,395 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 11:21:44,395 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 11:21:44,454 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:21:44,455 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4] total 6 [2019-10-22 11:21:44,455 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833206462] [2019-10-22 11:21:44,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:21:44,457 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:44,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:21:44,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:21:44,458 INFO L87 Difference]: Start difference. First operand 144 states and 212 transitions. Second operand 6 states. [2019-10-22 11:21:44,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:44,995 INFO L93 Difference]: Finished difference Result 513 states and 781 transitions. [2019-10-22 11:21:44,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:21:44,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2019-10-22 11:21:44,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:44,998 INFO L225 Difference]: With dead ends: 513 [2019-10-22 11:21:44,998 INFO L226 Difference]: Without dead ends: 378 [2019-10-22 11:21:44,999 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 259 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:21:44,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2019-10-22 11:21:45,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 366. [2019-10-22 11:21:45,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2019-10-22 11:21:45,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 540 transitions. [2019-10-22 11:21:45,036 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 540 transitions. Word has length 67 [2019-10-22 11:21:45,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:45,037 INFO L462 AbstractCegarLoop]: Abstraction has 366 states and 540 transitions. [2019-10-22 11:21:45,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:21:45,037 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 540 transitions. [2019-10-22 11:21:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-22 11:21:45,039 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:45,039 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1] [2019-10-22 11:21:45,439 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:45,440 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:45,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:45,440 INFO L82 PathProgramCache]: Analyzing trace with hash 2095039562, now seen corresponding path program 1 times [2019-10-22 11:21:45,440 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:45,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [396932356] [2019-10-22 11:21:45,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/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 [2019-10-22 11:21:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:45,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:21:45,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 11:21:45,541 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:45,549 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 11:21:45,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [396932356] [2019-10-22 11:21:45,549 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:45,549 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:21:45,550 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858675345] [2019-10-22 11:21:45,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:45,550 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:45,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:45,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:45,551 INFO L87 Difference]: Start difference. First operand 366 states and 540 transitions. Second operand 3 states. [2019-10-22 11:21:45,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:45,583 INFO L93 Difference]: Finished difference Result 874 states and 1297 transitions. [2019-10-22 11:21:45,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:45,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-10-22 11:21:45,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:45,586 INFO L225 Difference]: With dead ends: 874 [2019-10-22 11:21:45,586 INFO L226 Difference]: Without dead ends: 521 [2019-10-22 11:21:45,587 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:45,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2019-10-22 11:21:45,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 519. [2019-10-22 11:21:45,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-10-22 11:21:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 768 transitions. [2019-10-22 11:21:45,605 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 768 transitions. Word has length 67 [2019-10-22 11:21:45,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:45,605 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 768 transitions. [2019-10-22 11:21:45,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:45,605 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 768 transitions. [2019-10-22 11:21:45,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-22 11:21:45,607 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:45,608 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1] [2019-10-22 11:21:45,808 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:45,809 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:45,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:45,809 INFO L82 PathProgramCache]: Analyzing trace with hash -811886006, now seen corresponding path program 1 times [2019-10-22 11:21:45,809 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:45,809 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [68265475] [2019-10-22 11:21:45,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/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 [2019-10-22 11:21:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:45,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:21:45,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 11:21:45,895 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 11:21:45,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [68265475] [2019-10-22 11:21:45,907 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:45,907 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:21:45,907 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602047321] [2019-10-22 11:21:45,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:45,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:45,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:45,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:45,908 INFO L87 Difference]: Start difference. First operand 519 states and 768 transitions. Second operand 3 states. [2019-10-22 11:21:45,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:45,933 INFO L93 Difference]: Finished difference Result 523 states and 770 transitions. [2019-10-22 11:21:45,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:45,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-10-22 11:21:45,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:45,935 INFO L225 Difference]: With dead ends: 523 [2019-10-22 11:21:45,935 INFO L226 Difference]: Without dead ends: 366 [2019-10-22 11:21:45,936 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:45,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2019-10-22 11:21:45,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 364. [2019-10-22 11:21:45,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-10-22 11:21:45,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 531 transitions. [2019-10-22 11:21:45,947 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 531 transitions. Word has length 67 [2019-10-22 11:21:45,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:45,947 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 531 transitions. [2019-10-22 11:21:45,948 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:45,948 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 531 transitions. [2019-10-22 11:21:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-22 11:21:45,949 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:45,949 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1] [2019-10-22 11:21:46,150 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:46,150 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:46,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:46,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1677642956, now seen corresponding path program 1 times [2019-10-22 11:21:46,151 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:46,151 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1093399745] [2019-10-22 11:21:46,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/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 [2019-10-22 11:21:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:46,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:21:46,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:21:46,336 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:46,392 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:21:46,392 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1093399745] [2019-10-22 11:21:46,392 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465353144] [2019-10-22 11:21:46,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:46,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:21:46,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:46,482 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 11:21:46,482 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 11:21:46,544 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:21:46,544 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 4, 4] total 14 [2019-10-22 11:21:46,544 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489242493] [2019-10-22 11:21:46,545 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-22 11:21:46,545 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:46,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-22 11:21:46,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-10-22 11:21:46,545 INFO L87 Difference]: Start difference. First operand 364 states and 531 transitions. Second operand 14 states. [2019-10-22 11:21:48,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:48,403 INFO L93 Difference]: Finished difference Result 1164 states and 1757 transitions. [2019-10-22 11:21:48,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-22 11:21:48,404 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2019-10-22 11:21:48,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:48,406 INFO L225 Difference]: With dead ends: 1164 [2019-10-22 11:21:48,407 INFO L226 Difference]: Without dead ends: 804 [2019-10-22 11:21:48,409 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:21:48,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2019-10-22 11:21:48,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 501. [2019-10-22 11:21:48,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2019-10-22 11:21:48,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 702 transitions. [2019-10-22 11:21:48,426 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 702 transitions. Word has length 67 [2019-10-22 11:21:48,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:48,427 INFO L462 AbstractCegarLoop]: Abstraction has 501 states and 702 transitions. [2019-10-22 11:21:48,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-22 11:21:48,427 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 702 transitions. [2019-10-22 11:21:48,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-22 11:21:48,429 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:48,429 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1] [2019-10-22 11:21:48,829 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:48,830 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:48,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:48,830 INFO L82 PathProgramCache]: Analyzing trace with hash -602651212, now seen corresponding path program 1 times [2019-10-22 11:21:48,830 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:48,831 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [972649616] [2019-10-22 11:21:48,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/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 [2019-10-22 11:21:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:48,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:21:48,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-22 11:21:48,918 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:48,923 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-22 11:21:48,923 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [972649616] [2019-10-22 11:21:48,924 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:48,924 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:21:48,924 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169201484] [2019-10-22 11:21:48,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:48,924 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:48,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:48,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:48,925 INFO L87 Difference]: Start difference. First operand 501 states and 702 transitions. Second operand 3 states. [2019-10-22 11:21:49,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:49,063 INFO L93 Difference]: Finished difference Result 1037 states and 1470 transitions. [2019-10-22 11:21:49,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:49,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2019-10-22 11:21:49,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:49,065 INFO L225 Difference]: With dead ends: 1037 [2019-10-22 11:21:49,065 INFO L226 Difference]: Without dead ends: 549 [2019-10-22 11:21:49,066 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:49,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2019-10-22 11:21:49,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 543. [2019-10-22 11:21:49,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2019-10-22 11:21:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 754 transitions. [2019-10-22 11:21:49,085 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 754 transitions. Word has length 84 [2019-10-22 11:21:49,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:49,086 INFO L462 AbstractCegarLoop]: Abstraction has 543 states and 754 transitions. [2019-10-22 11:21:49,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:49,086 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 754 transitions. [2019-10-22 11:21:49,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-22 11:21:49,087 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:49,087 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:49,287 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:49,287 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:49,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:49,288 INFO L82 PathProgramCache]: Analyzing trace with hash -801029670, now seen corresponding path program 1 times [2019-10-22 11:21:49,288 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:49,288 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1693499433] [2019-10-22 11:21:49,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:49,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:21:49,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:49,373 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-22 11:21:49,373 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:49,386 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-22 11:21:49,386 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1693499433] [2019-10-22 11:21:49,386 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:49,387 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-22 11:21:49,387 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962938850] [2019-10-22 11:21:49,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:21:49,387 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:49,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:21:49,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:21:49,388 INFO L87 Difference]: Start difference. First operand 543 states and 754 transitions. Second operand 4 states. [2019-10-22 11:21:49,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:49,444 INFO L93 Difference]: Finished difference Result 1649 states and 2284 transitions. [2019-10-22 11:21:49,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:21:49,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-10-22 11:21:49,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:49,448 INFO L225 Difference]: With dead ends: 1649 [2019-10-22 11:21:49,449 INFO L226 Difference]: Without dead ends: 1119 [2019-10-22 11:21:49,450 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:21:49,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2019-10-22 11:21:49,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1115. [2019-10-22 11:21:49,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2019-10-22 11:21:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1531 transitions. [2019-10-22 11:21:49,477 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1531 transitions. Word has length 103 [2019-10-22 11:21:49,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:49,477 INFO L462 AbstractCegarLoop]: Abstraction has 1115 states and 1531 transitions. [2019-10-22 11:21:49,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:21:49,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1531 transitions. [2019-10-22 11:21:49,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-22 11:21:49,479 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:49,479 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:49,679 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:49,680 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:49,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:49,680 INFO L82 PathProgramCache]: Analyzing trace with hash -935043176, now seen corresponding path program 1 times [2019-10-22 11:21:49,681 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:49,681 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [456727747] [2019-10-22 11:21:49,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:50,130 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:21:50,131 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:21:50,331 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:50,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:21:50 BoogieIcfgContainer [2019-10-22 11:21:50,396 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:21:50,397 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:21:50,397 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:21:50,397 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:21:50,397 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:42" (3/4) ... [2019-10-22 11:21:50,399 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:21:50,495 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_03f39397-7cc0-4569-b7eb-f2b81314373a/bin/utaipan/witness.graphml [2019-10-22 11:21:50,498 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:21:50,500 INFO L168 Benchmark]: Toolchain (without parser) took 9438.98 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 307.8 MB). Free memory was 952.4 MB in the beginning and 1.0 GB in the end (delta: -62.8 MB). Peak memory consumption was 244.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:50,500 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:50,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.00 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -154.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:50,501 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:50,501 INFO L168 Benchmark]: Boogie Preprocessor took 53.22 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:50,501 INFO L168 Benchmark]: RCFGBuilder took 651.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 54.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:50,501 INFO L168 Benchmark]: TraceAbstraction took 8084.96 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 188.7 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 28.6 MB). Peak memory consumption was 217.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:50,502 INFO L168 Benchmark]: Witness Printer took 101.47 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:50,503 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 482.00 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -154.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 61.37 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.22 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 651.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 54.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8084.96 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 188.7 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 28.6 MB). Peak memory consumption was 217.3 MB. Max. memory is 11.5 GB. * Witness Printer took 101.47 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 614]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L623] int __retres1 ; [L9] int s__info_callback = __VERIFIER_nondet_int(); [L10] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L11] int s__state ; [L12] int s__new_session ; [L13] int s__server ; [L14] unsigned int s__version = __VERIFIER_nondet_uint(); [L15] int s__type ; [L16] int s__init_num ; [L17] int s__bbio = __VERIFIER_nondet_int(); [L18] int s__wbio = __VERIFIER_nondet_int(); [L19] int s__hit = __VERIFIER_nondet_int(); [L20] int s__rwstate ; [L21] int s__init_buf___0 ; [L22] int s__debug = __VERIFIER_nondet_int(); [L23] int s__shutdown ; [L24] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L25] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L26] unsigned int s__ctx__stats__sess_connect ; [L27] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L29] int s__s3__change_cipher_spec ; [L30] int s__s3__flags ; [L31] int s__s3__delay_buf_pop_ret ; [L32] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L33] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__next_state___0 ; [L38] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L39] int s__session__cipher ; [L40] int s__session__compress_meth ; [L41] int buf ; [L42] unsigned long tmp ; [L43] unsigned long l ; [L44] int num1 ; [L45] int cb ; [L46] int ret ; [L47] int new_state ; [L48] int state ; [L49] int skip ; [L50] int tmp___0 ; [L51] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L52] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L53] int tmp___3 = __VERIFIER_nondet_int(); [L54] int tmp___4 = __VERIFIER_nondet_int(); [L55] int tmp___5 = __VERIFIER_nondet_int(); [L56] int tmp___6 = __VERIFIER_nondet_int(); [L57] int tmp___7 = __VERIFIER_nondet_int(); [L58] int tmp___8 = __VERIFIER_nondet_int(); [L59] int tmp___9 = __VERIFIER_nondet_int(); [L60] int blastFlag ; [L61] int ag_X ; [L62] int ag_Y ; [L63] int ag_Z ; [L64] int __retres60 ; [L67] s__state = 12292 [L68] blastFlag = 0 [L69] tmp = __VERIFIER_nondet_int() [L70] cb = 0 [L71] ret = -1 [L72] skip = 0 [L73] tmp___0 = 0 [L74] COND TRUE s__info_callback != 0 [L75] cb = s__info_callback [L83] s__in_handshake = s__in_handshake + 1 [L84] COND FALSE !(tmp___1 + 12288) [L93] COND FALSE !(\read(s__hit)) [L96] ag_Z = 48 [L99] COND TRUE 1 [L101] state = s__state [L102] COND TRUE s__state == 12292 [L205] s__new_session = 1 [L206] s__state = 4096 [L207] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L212] s__server = 0 [L213] COND TRUE cb != 0 [L218] COND FALSE !(s__version + 65280 != 768) [L224] s__type = 4096 [L225] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L243] COND FALSE !(! tmp___4) [L249] COND FALSE !(! tmp___5) [L255] s__state = 4368 [L256] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L257] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND TRUE s__state == 4368 [L261] s__shutdown = 0 [L262] ret = __VERIFIER_nondet_int() [L263] COND TRUE blastFlag == 0 [L264] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] ag_X = s__state - 32 [L275] s__init_num = 0 [L276] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND TRUE s__state == 4384 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L294] COND FALSE !(ret <= 0) [L299] s__state = ag_X [L300] COND FALSE !(\read(s__hit)) [L303] s__state = s__state | ag_Z [L305] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND TRUE s__state == 4400 [L309] COND TRUE (unsigned long )s__s3__tmp__new_cipher__algorithms + 256UL [L310] skip = 1 [L324] s__state = 4416 [L325] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND TRUE s__state == 4416 [L329] ret = __VERIFIER_nondet_int() [L330] COND FALSE !(blastFlag == 3) [L335] COND FALSE !(ret <= 0) [L340] s__state = 4432 [L341] s__init_num = 0 [L342] COND FALSE !(! tmp___6) [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND FALSE !(s__state == 4416) [L138] COND FALSE !(s__state == 4417) [L141] COND TRUE s__state == 4432 [L351] ret = __VERIFIER_nondet_int() [L352] COND TRUE blastFlag <= 5 [L614] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Result: UNSAFE, OverallTime: 8.0s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1643 SDtfs, 2068 SDslu, 2524 SDs, 0 SdLazy, 2420 SolverSat, 384 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1393 GetRequests, 1352 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1115occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 336 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 802 NumberOfCodeBlocks, 802 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1376 ConstructedInterpolants, 177 QuantifiedInterpolants, 274736 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1220 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 22 InterpolantComputations, 14 PerfectInterpolantSequences, 759/960 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...