./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer --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 Automizer --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/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer --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 Automizer --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 0.1.24-6b5699a [2019-11-25 08:46:14,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:46:14,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:46:14,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:46:14,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:46:14,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:46:14,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:46:14,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:46:14,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:46:14,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:46:14,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:46:14,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:46:14,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:46:14,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:46:14,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:46:14,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:46:14,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:46:14,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:46:14,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:46:14,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:46:14,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:46:14,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:46:14,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:46:14,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:46:14,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:46:14,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:46:14,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:46:14,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:46:14,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:46:14,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:46:14,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:46:14,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:46:14,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:46:14,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:46:14,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:46:14,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:46:14,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:46:14,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:46:14,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:46:14,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:46:14,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:46:14,085 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:46:14,108 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:46:14,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:46:14,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:46:14,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:46:14,119 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:46:14,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:46:14,120 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:46:14,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:46:14,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:46:14,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:46:14,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:46:14,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:46:14,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:46:14,121 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:46:14,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:46:14,122 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:46:14,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:46:14,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:46:14,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:46:14,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:46:14,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:46:14,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:46:14,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:46:14,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:46:14,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:46:14,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:46:14,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:46:14,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:46:14,125 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer 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 -> Automizer 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 [2019-11-25 08:46:14,299 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:46:14,318 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:46:14,320 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:46:14,322 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:46:14,322 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:46:14,323 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-11-25 08:46:14,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/data/d031f436d/0b1a630d84b44968a02d0191a71ace4a/FLAG7a953c46a [2019-11-25 08:46:14,825 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:46:14,838 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-11-25 08:46:14,848 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/data/d031f436d/0b1a630d84b44968a02d0191a71ace4a/FLAG7a953c46a [2019-11-25 08:46:15,207 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/data/d031f436d/0b1a630d84b44968a02d0191a71ace4a [2019-11-25 08:46:15,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:46:15,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:46:15,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:15,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:46:15,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:46:15,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:15" (1/1) ... [2019-11-25 08:46:15,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165a53cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:15, skipping insertion in model container [2019-11-25 08:46:15,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:15" (1/1) ... [2019-11-25 08:46:15,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:46:15,296 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:46:15,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:15,626 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:46:15,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:15,692 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:46:15,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:15 WrapperNode [2019-11-25 08:46:15,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:15,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:15,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:46:15,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:46:15,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:15" (1/1) ... [2019-11-25 08:46:15,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:15" (1/1) ... [2019-11-25 08:46:15,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:15,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:46:15,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:46:15,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:46:15,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:15" (1/1) ... [2019-11-25 08:46:15,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:15" (1/1) ... [2019-11-25 08:46:15,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:15" (1/1) ... [2019-11-25 08:46:15,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:15" (1/1) ... [2019-11-25 08:46:15,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:15" (1/1) ... [2019-11-25 08:46:15,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:15" (1/1) ... [2019-11-25 08:46:15,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:15" (1/1) ... [2019-11-25 08:46:15,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:46:15,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:46:15,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:46:15,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:46:15,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:46:15,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:46:15,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:46:15,973 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-25 08:46:16,482 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2019-11-25 08:46:16,482 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2019-11-25 08:46:16,483 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:46:16,483 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:46:16,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:16 BoogieIcfgContainer [2019-11-25 08:46:16,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:46:16,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:46:16,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:46:16,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:46:16,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:46:15" (1/3) ... [2019-11-25 08:46:16,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3816a2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:16, skipping insertion in model container [2019-11-25 08:46:16,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:15" (2/3) ... [2019-11-25 08:46:16,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3816a2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:16, skipping insertion in model container [2019-11-25 08:46:16,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:16" (3/3) ... [2019-11-25 08:46:16,491 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2019-11-25 08:46:16,499 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:46:16,505 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:46:16,515 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:46:16,544 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:46:16,544 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:46:16,544 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:46:16,544 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:46:16,545 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:46:16,545 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:46:16,545 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:46:16,545 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:46:16,565 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-11-25 08:46:16,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-25 08:46:16,572 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:16,573 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:16,574 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:16,580 INFO L82 PathProgramCache]: Analyzing trace with hash 511659491, now seen corresponding path program 1 times [2019-11-25 08:46:16,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:16,588 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840806991] [2019-11-25 08:46:16,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:16,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840806991] [2019-11-25 08:46:16,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:16,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:46:16,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115756884] [2019-11-25 08:46:16,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:16,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:16,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:16,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:16,786 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-11-25 08:46:17,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:17,018 INFO L93 Difference]: Finished difference Result 246 states and 422 transitions. [2019-11-25 08:46:17,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:17,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-25 08:46:17,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:17,038 INFO L225 Difference]: With dead ends: 246 [2019-11-25 08:46:17,038 INFO L226 Difference]: Without dead ends: 112 [2019-11-25 08:46:17,042 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:17,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-25 08:46:17,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-11-25 08:46:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-25 08:46:17,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions. [2019-11-25 08:46:17,104 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 24 [2019-11-25 08:46:17,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:17,104 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 170 transitions. [2019-11-25 08:46:17,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:17,105 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions. [2019-11-25 08:46:17,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-25 08:46:17,106 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:17,106 INFO L410 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] [2019-11-25 08:46:17,107 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:17,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:17,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1971493731, now seen corresponding path program 1 times [2019-11-25 08:46:17,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:17,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567471416] [2019-11-25 08:46:17,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:17,177 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567471416] [2019-11-25 08:46:17,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:17,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:46:17,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570354675] [2019-11-25 08:46:17,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:17,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:17,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:17,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:17,179 INFO L87 Difference]: Start difference. First operand 112 states and 170 transitions. Second operand 3 states. [2019-11-25 08:46:17,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:17,381 INFO L93 Difference]: Finished difference Result 232 states and 355 transitions. [2019-11-25 08:46:17,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:17,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-11-25 08:46:17,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:17,384 INFO L225 Difference]: With dead ends: 232 [2019-11-25 08:46:17,384 INFO L226 Difference]: Without dead ends: 130 [2019-11-25 08:46:17,385 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:17,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-11-25 08:46:17,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-11-25 08:46:17,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-25 08:46:17,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 190 transitions. [2019-11-25 08:46:17,401 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 190 transitions. Word has length 36 [2019-11-25 08:46:17,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:17,402 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 190 transitions. [2019-11-25 08:46:17,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:17,402 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 190 transitions. [2019-11-25 08:46:17,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-25 08:46:17,404 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:17,404 INFO L410 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] [2019-11-25 08:46:17,404 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:17,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:17,405 INFO L82 PathProgramCache]: Analyzing trace with hash 441356492, now seen corresponding path program 1 times [2019-11-25 08:46:17,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:17,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904976486] [2019-11-25 08:46:17,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:46:17,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904976486] [2019-11-25 08:46:17,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:17,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:46:17,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774041241] [2019-11-25 08:46:17,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:17,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:17,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:17,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:17,488 INFO L87 Difference]: Start difference. First operand 127 states and 190 transitions. Second operand 3 states. [2019-11-25 08:46:17,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:17,636 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2019-11-25 08:46:17,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:17,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-11-25 08:46:17,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:17,638 INFO L225 Difference]: With dead ends: 265 [2019-11-25 08:46:17,639 INFO L226 Difference]: Without dead ends: 148 [2019-11-25 08:46:17,640 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:17,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-11-25 08:46:17,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-11-25 08:46:17,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-25 08:46:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 212 transitions. [2019-11-25 08:46:17,650 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 212 transitions. Word has length 50 [2019-11-25 08:46:17,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:17,651 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 212 transitions. [2019-11-25 08:46:17,651 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:17,651 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 212 transitions. [2019-11-25 08:46:17,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-25 08:46:17,653 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:17,654 INFO L410 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] [2019-11-25 08:46:17,654 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:17,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:17,654 INFO L82 PathProgramCache]: Analyzing trace with hash -394489400, now seen corresponding path program 1 times [2019-11-25 08:46:17,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:17,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558920677] [2019-11-25 08:46:17,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:17,846 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:17,847 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:46:17,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:46:17 BoogieIcfgContainer [2019-11-25 08:46:17,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:46:17,896 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:46:17,896 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:46:17,896 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:46:17,897 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:16" (3/4) ... [2019-11-25 08:46:17,901 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:46:17,901 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:46:17,903 INFO L168 Benchmark]: Toolchain (without parser) took 2691.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 948.8 MB in the beginning and 913.3 MB in the end (delta: 35.5 MB). Peak memory consumption was 141.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:17,904 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:17,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -148.1 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:17,905 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.81 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: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:17,906 INFO L168 Benchmark]: Boogie Preprocessor took 36.11 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: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:17,907 INFO L168 Benchmark]: RCFGBuilder took 689.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:17,907 INFO L168 Benchmark]: TraceAbstraction took 1410.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 920.5 MB in the end (delta: 116.0 MB). Peak memory consumption was 116.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:17,908 INFO L168 Benchmark]: Witness Printer took 5.15 ms. Allocated memory is still 1.1 GB. Free memory was 920.5 MB in the beginning and 913.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:17,912 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 474.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -148.1 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 64.81 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: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.11 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: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 689.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1410.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 920.5 MB in the end (delta: 116.0 MB). Peak memory consumption was 116.0 MB. Max. memory is 11.5 GB. * Witness Printer took 5.15 ms. Allocated memory is still 1.1 GB. Free memory was 920.5 MB in the beginning and 913.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. 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: 1.3s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 544 SDtfs, 37 SDslu, 265 SDs, 0 SdLazy, 283 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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 0.1.24-6b5699a [2019-11-25 08:46:19,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:46:19,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:46:19,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:46:19,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:46:19,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:46:19,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:46:19,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:46:19,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:46:19,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:46:19,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:46:19,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:46:19,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:46:19,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:46:19,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:46:19,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:46:19,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:46:19,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:46:19,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:46:19,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:46:19,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:46:19,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:46:19,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:46:19,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:46:19,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:46:19,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:46:19,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:46:19,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:46:19,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:46:19,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:46:19,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:46:19,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:46:19,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:46:19,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:46:19,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:46:19,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:46:19,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:46:19,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:46:19,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:46:19,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:46:19,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:46:19,909 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:46:19,922 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:46:19,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:46:19,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:46:19,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:46:19,924 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:46:19,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:46:19,925 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:46:19,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:46:19,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:46:19,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:46:19,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:46:19,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:46:19,926 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:46:19,926 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:46:19,927 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:46:19,927 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:46:19,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:46:19,927 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:46:19,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:46:19,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:46:19,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:46:19,928 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:46:19,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:46:19,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:46:19,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:46:19,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:46:19,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:46:19,935 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:46:19,936 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:46:19,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:46:19,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:46:19,936 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer 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 -> Automizer 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 [2019-11-25 08:46:20,221 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:46:20,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:46:20,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:46:20,240 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:46:20,241 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:46:20,241 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-11-25 08:46:20,300 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/data/805bd8029/7337fbfd569a4655b50c00e37574914e/FLAG138a1fc70 [2019-11-25 08:46:20,687 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:46:20,688 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-11-25 08:46:20,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/data/805bd8029/7337fbfd569a4655b50c00e37574914e/FLAG138a1fc70 [2019-11-25 08:46:21,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/data/805bd8029/7337fbfd569a4655b50c00e37574914e [2019-11-25 08:46:21,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:46:21,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:46:21,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:21,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:46:21,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:46:21,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:21" (1/1) ... [2019-11-25 08:46:21,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73256a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:21, skipping insertion in model container [2019-11-25 08:46:21,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:21" (1/1) ... [2019-11-25 08:46:21,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:46:21,171 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:46:21,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:21,497 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:46:21,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:21,641 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:46:21,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:21 WrapperNode [2019-11-25 08:46:21,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:21,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:21,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:46:21,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:46:21,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:21" (1/1) ... [2019-11-25 08:46:21,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:21" (1/1) ... [2019-11-25 08:46:21,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:21,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:46:21,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:46:21,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:46:21,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:21" (1/1) ... [2019-11-25 08:46:21,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:21" (1/1) ... [2019-11-25 08:46:21,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:21" (1/1) ... [2019-11-25 08:46:21,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:21" (1/1) ... [2019-11-25 08:46:21,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:21" (1/1) ... [2019-11-25 08:46:21,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:21" (1/1) ... [2019-11-25 08:46:21,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:21" (1/1) ... [2019-11-25 08:46:21,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:46:21,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:46:21,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:46:21,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:46:21,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:46:21,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:46:21,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:46:21,944 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-25 08:46:22,484 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2019-11-25 08:46:22,484 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2019-11-25 08:46:22,486 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:46:22,486 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:46:22,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:22 BoogieIcfgContainer [2019-11-25 08:46:22,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:46:22,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:46:22,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:46:22,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:46:22,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:46:21" (1/3) ... [2019-11-25 08:46:22,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce24bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:22, skipping insertion in model container [2019-11-25 08:46:22,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:21" (2/3) ... [2019-11-25 08:46:22,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce24bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:22, skipping insertion in model container [2019-11-25 08:46:22,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:22" (3/3) ... [2019-11-25 08:46:22,497 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2019-11-25 08:46:22,508 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:46:22,516 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:46:22,529 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:46:22,557 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:46:22,558 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:46:22,558 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:46:22,558 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:46:22,559 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:46:22,559 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:46:22,559 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:46:22,559 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:46:22,579 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-11-25 08:46:22,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-25 08:46:22,588 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:22,589 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:22,589 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:22,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:22,596 INFO L82 PathProgramCache]: Analyzing trace with hash 511659491, now seen corresponding path program 1 times [2019-11-25 08:46:22,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:22,610 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1146183419] [2019-11-25 08:46:22,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:22,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:22,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:22,796 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:22,815 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1146183419] [2019-11-25 08:46:22,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:22,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:46:22,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171030858] [2019-11-25 08:46:22,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:22,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:22,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:22,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:22,845 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-11-25 08:46:23,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:23,109 INFO L93 Difference]: Finished difference Result 246 states and 422 transitions. [2019-11-25 08:46:23,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:23,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-25 08:46:23,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:23,130 INFO L225 Difference]: With dead ends: 246 [2019-11-25 08:46:23,130 INFO L226 Difference]: Without dead ends: 112 [2019-11-25 08:46:23,137 INFO L630 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 [2019-11-25 08:46:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-25 08:46:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-11-25 08:46:23,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-25 08:46:23,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions. [2019-11-25 08:46:23,208 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 24 [2019-11-25 08:46:23,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:23,209 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 170 transitions. [2019-11-25 08:46:23,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:23,209 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions. [2019-11-25 08:46:23,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-25 08:46:23,211 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:23,211 INFO L410 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] [2019-11-25 08:46:23,412 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:23,412 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:23,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1971493731, now seen corresponding path program 1 times [2019-11-25 08:46:23,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:23,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [543796525] [2019-11-25 08:46:23,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:23,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:23,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:23,512 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:23,518 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [543796525] [2019-11-25 08:46:23,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:23,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-25 08:46:23,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103780664] [2019-11-25 08:46:23,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:23,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:23,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:23,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:23,521 INFO L87 Difference]: Start difference. First operand 112 states and 170 transitions. Second operand 3 states. [2019-11-25 08:46:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:23,709 INFO L93 Difference]: Finished difference Result 232 states and 355 transitions. [2019-11-25 08:46:23,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:23,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-11-25 08:46:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:23,713 INFO L225 Difference]: With dead ends: 232 [2019-11-25 08:46:23,713 INFO L226 Difference]: Without dead ends: 130 [2019-11-25 08:46:23,714 INFO L630 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 [2019-11-25 08:46:23,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-11-25 08:46:23,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-11-25 08:46:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-25 08:46:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 190 transitions. [2019-11-25 08:46:23,740 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 190 transitions. Word has length 36 [2019-11-25 08:46:23,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:23,742 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 190 transitions. [2019-11-25 08:46:23,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:23,743 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 190 transitions. [2019-11-25 08:46:23,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-25 08:46:23,748 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:23,750 INFO L410 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] [2019-11-25 08:46:23,953 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:23,953 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:23,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:23,954 INFO L82 PathProgramCache]: Analyzing trace with hash 441356492, now seen corresponding path program 1 times [2019-11-25 08:46:23,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:23,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1817824434] [2019-11-25 08:46:23,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:24,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:24,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:46:24,077 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:46:24,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1817824434] [2019-11-25 08:46:24,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:24,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-25 08:46:24,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117984941] [2019-11-25 08:46:24,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:24,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:24,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:24,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:24,091 INFO L87 Difference]: Start difference. First operand 127 states and 190 transitions. Second operand 3 states. [2019-11-25 08:46:24,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:24,283 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2019-11-25 08:46:24,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:24,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-11-25 08:46:24,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:24,286 INFO L225 Difference]: With dead ends: 265 [2019-11-25 08:46:24,286 INFO L226 Difference]: Without dead ends: 148 [2019-11-25 08:46:24,287 INFO L630 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 [2019-11-25 08:46:24,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-11-25 08:46:24,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-11-25 08:46:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-25 08:46:24,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 212 transitions. [2019-11-25 08:46:24,298 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 212 transitions. Word has length 50 [2019-11-25 08:46:24,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:24,299 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 212 transitions. [2019-11-25 08:46:24,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:24,299 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 212 transitions. [2019-11-25 08:46:24,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-25 08:46:24,300 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:24,301 INFO L410 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] [2019-11-25 08:46:24,510 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:24,511 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:24,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:24,511 INFO L82 PathProgramCache]: Analyzing trace with hash -394489400, now seen corresponding path program 1 times [2019-11-25 08:46:24,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:24,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [256706625] [2019-11-25 08:46:24,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:24,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:46:24,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-25 08:46:24,756 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:24,893 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-25 08:46:24,894 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [256706625] [2019-11-25 08:46:24,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:24,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-11-25 08:46:24,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978352830] [2019-11-25 08:46:24,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:46:24,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:24,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:46:24,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:46:24,898 INFO L87 Difference]: Start difference. First operand 144 states and 212 transitions. Second operand 6 states. [2019-11-25 08:46:25,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:25,578 INFO L93 Difference]: Finished difference Result 513 states and 781 transitions. [2019-11-25 08:46:25,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:46:25,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2019-11-25 08:46:25,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:25,582 INFO L225 Difference]: With dead ends: 513 [2019-11-25 08:46:25,582 INFO L226 Difference]: Without dead ends: 378 [2019-11-25 08:46:25,584 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:46:25,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2019-11-25 08:46:25,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 366. [2019-11-25 08:46:25,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2019-11-25 08:46:25,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 540 transitions. [2019-11-25 08:46:25,610 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 540 transitions. Word has length 67 [2019-11-25 08:46:25,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:25,610 INFO L462 AbstractCegarLoop]: Abstraction has 366 states and 540 transitions. [2019-11-25 08:46:25,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:46:25,610 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 540 transitions. [2019-11-25 08:46:25,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-25 08:46:25,613 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:25,613 INFO L410 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] [2019-11-25 08:46:25,816 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:25,816 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:25,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:25,816 INFO L82 PathProgramCache]: Analyzing trace with hash 2095039562, now seen corresponding path program 1 times [2019-11-25 08:46:25,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:25,817 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [940278886] [2019-11-25 08:46:25,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:25,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:25,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-25 08:46:25,938 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-25 08:46:25,948 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [940278886] [2019-11-25 08:46:25,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:25,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-25 08:46:25,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141493888] [2019-11-25 08:46:25,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:25,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:25,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:25,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:25,950 INFO L87 Difference]: Start difference. First operand 366 states and 540 transitions. Second operand 3 states. [2019-11-25 08:46:25,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:25,991 INFO L93 Difference]: Finished difference Result 874 states and 1297 transitions. [2019-11-25 08:46:25,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:25,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-11-25 08:46:25,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:25,995 INFO L225 Difference]: With dead ends: 874 [2019-11-25 08:46:25,995 INFO L226 Difference]: Without dead ends: 521 [2019-11-25 08:46:25,997 INFO L630 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 [2019-11-25 08:46:25,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2019-11-25 08:46:26,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 519. [2019-11-25 08:46:26,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-11-25 08:46:26,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 768 transitions. [2019-11-25 08:46:26,019 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 768 transitions. Word has length 67 [2019-11-25 08:46:26,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:26,019 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 768 transitions. [2019-11-25 08:46:26,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:26,020 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 768 transitions. [2019-11-25 08:46:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-25 08:46:26,022 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:26,023 INFO L410 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] [2019-11-25 08:46:26,225 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:26,225 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:26,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:26,225 INFO L82 PathProgramCache]: Analyzing trace with hash -811886006, now seen corresponding path program 1 times [2019-11-25 08:46:26,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:26,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [488150689] [2019-11-25 08:46:26,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:26,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:26,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:26,326 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-25 08:46:26,327 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-25 08:46:26,339 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [488150689] [2019-11-25 08:46:26,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:26,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-25 08:46:26,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133032713] [2019-11-25 08:46:26,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:26,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:26,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:26,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:26,350 INFO L87 Difference]: Start difference. First operand 519 states and 768 transitions. Second operand 3 states. [2019-11-25 08:46:26,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:26,380 INFO L93 Difference]: Finished difference Result 523 states and 770 transitions. [2019-11-25 08:46:26,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:26,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-11-25 08:46:26,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:26,383 INFO L225 Difference]: With dead ends: 523 [2019-11-25 08:46:26,383 INFO L226 Difference]: Without dead ends: 366 [2019-11-25 08:46:26,384 INFO L630 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 [2019-11-25 08:46:26,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2019-11-25 08:46:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 364. [2019-11-25 08:46:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-11-25 08:46:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 531 transitions. [2019-11-25 08:46:26,403 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 531 transitions. Word has length 67 [2019-11-25 08:46:26,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:26,403 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 531 transitions. [2019-11-25 08:46:26,403 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:26,403 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 531 transitions. [2019-11-25 08:46:26,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-25 08:46:26,407 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:26,407 INFO L410 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] [2019-11-25 08:46:26,608 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:26,609 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:26,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:26,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1677642956, now seen corresponding path program 1 times [2019-11-25 08:46:26,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:26,610 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1453993464] [2019-11-25 08:46:26,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:26,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:46:26,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:46:26,880 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:46:26,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1453993464] [2019-11-25 08:46:26,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:26,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-11-25 08:46:26,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620415676] [2019-11-25 08:46:26,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-25 08:46:26,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:26,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-25 08:46:26,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:46:26,971 INFO L87 Difference]: Start difference. First operand 364 states and 531 transitions. Second operand 11 states. [2019-11-25 08:46:28,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:28,349 INFO L93 Difference]: Finished difference Result 828 states and 1231 transitions. [2019-11-25 08:46:28,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-25 08:46:28,350 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2019-11-25 08:46:28,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:28,354 INFO L225 Difference]: With dead ends: 828 [2019-11-25 08:46:28,354 INFO L226 Difference]: Without dead ends: 672 [2019-11-25 08:46:28,355 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:46:28,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2019-11-25 08:46:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 423. [2019-11-25 08:46:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2019-11-25 08:46:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 600 transitions. [2019-11-25 08:46:28,374 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 600 transitions. Word has length 67 [2019-11-25 08:46:28,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:28,374 INFO L462 AbstractCegarLoop]: Abstraction has 423 states and 600 transitions. [2019-11-25 08:46:28,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-25 08:46:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 600 transitions. [2019-11-25 08:46:28,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-25 08:46:28,375 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:28,376 INFO L410 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] [2019-11-25 08:46:28,585 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:28,586 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:28,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:28,586 INFO L82 PathProgramCache]: Analyzing trace with hash -602651212, now seen corresponding path program 1 times [2019-11-25 08:46:28,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:28,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [493275934] [2019-11-25 08:46:28,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:28,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:28,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:28,693 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-25 08:46:28,693 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:28,704 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-25 08:46:28,704 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [493275934] [2019-11-25 08:46:28,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:28,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-25 08:46:28,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501945584] [2019-11-25 08:46:28,707 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:46:28,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:28,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:46:28,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:46:28,708 INFO L87 Difference]: Start difference. First operand 423 states and 600 transitions. Second operand 3 states. [2019-11-25 08:46:28,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:28,890 INFO L93 Difference]: Finished difference Result 881 states and 1266 transitions. [2019-11-25 08:46:28,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:46:28,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2019-11-25 08:46:28,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:28,894 INFO L225 Difference]: With dead ends: 881 [2019-11-25 08:46:28,894 INFO L226 Difference]: Without dead ends: 471 [2019-11-25 08:46:28,896 INFO L630 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 [2019-11-25 08:46:28,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-11-25 08:46:28,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 465. [2019-11-25 08:46:28,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2019-11-25 08:46:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 652 transitions. [2019-11-25 08:46:28,917 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 652 transitions. Word has length 84 [2019-11-25 08:46:28,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:28,917 INFO L462 AbstractCegarLoop]: Abstraction has 465 states and 652 transitions. [2019-11-25 08:46:28,917 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:46:28,917 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 652 transitions. [2019-11-25 08:46:28,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-25 08:46:28,919 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:28,919 INFO L410 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] [2019-11-25 08:46:29,121 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:29,121 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:29,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:29,122 INFO L82 PathProgramCache]: Analyzing trace with hash -801029670, now seen corresponding path program 1 times [2019-11-25 08:46:29,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:29,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2017212378] [2019-11-25 08:46:29,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:29,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:29,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-25 08:46:29,260 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-25 08:46:29,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2017212378] [2019-11-25 08:46:29,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:29,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-25 08:46:29,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003160335] [2019-11-25 08:46:29,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:46:29,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:29,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:46:29,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:46:29,279 INFO L87 Difference]: Start difference. First operand 465 states and 652 transitions. Second operand 4 states. [2019-11-25 08:46:29,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:29,357 INFO L93 Difference]: Finished difference Result 1415 states and 1978 transitions. [2019-11-25 08:46:29,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:46:29,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-11-25 08:46:29,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:29,363 INFO L225 Difference]: With dead ends: 1415 [2019-11-25 08:46:29,363 INFO L226 Difference]: Without dead ends: 963 [2019-11-25 08:46:29,364 INFO L630 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 [2019-11-25 08:46:29,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2019-11-25 08:46:29,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 959. [2019-11-25 08:46:29,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-11-25 08:46:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1327 transitions. [2019-11-25 08:46:29,399 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1327 transitions. Word has length 103 [2019-11-25 08:46:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:29,399 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1327 transitions. [2019-11-25 08:46:29,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:46:29,399 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1327 transitions. [2019-11-25 08:46:29,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-25 08:46:29,401 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:29,401 INFO L410 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] [2019-11-25 08:46:29,611 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:29,611 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:29,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:29,612 INFO L82 PathProgramCache]: Analyzing trace with hash -935043176, now seen corresponding path program 1 times [2019-11-25 08:46:29,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:29,613 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [809474854] [2019-11-25 08:46:29,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:30,093 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 08:46:30,094 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:46:30,301 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:46:30,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:46:30 BoogieIcfgContainer [2019-11-25 08:46:30,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:46:30,415 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:46:30,415 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:46:30,415 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:46:30,416 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:22" (3/4) ... [2019-11-25 08:46:30,419 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:46:30,572 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_57a184c0-f2d7-4261-aac3-c1bc26f62b90/bin/uautomizer/witness.graphml [2019-11-25 08:46:30,572 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:46:30,574 INFO L168 Benchmark]: Toolchain (without parser) took 9475.64 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 275.8 MB). Free memory was 961.8 MB in the beginning and 1.2 GB in the end (delta: -190.0 MB). Peak memory consumption was 85.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:30,575 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:30,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 540.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 961.8 MB in the beginning and 1.2 GB in the end (delta: -191.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:30,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:30,576 INFO L168 Benchmark]: Boogie Preprocessor took 46.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:30,576 INFO L168 Benchmark]: RCFGBuilder took 749.61 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: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:30,577 INFO L168 Benchmark]: TraceAbstraction took 7924.19 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 112.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -58.5 MB). Peak memory consumption was 53.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:30,577 INFO L168 Benchmark]: Witness Printer took 157.21 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:30,579 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 540.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 961.8 MB in the beginning and 1.2 GB in the end (delta: -191.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 749.61 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: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7924.19 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 112.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -58.5 MB). Peak memory consumption was 53.7 MB. Max. memory is 11.5 GB. * Witness Printer took 157.21 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 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: 7.8s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1698 SDtfs, 1753 SDslu, 2509 SDs, 0 SdLazy, 1659 SolverSat, 239 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1122 GetRequests, 1091 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=959occurred 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: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 282 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 668 NumberOfCodeBlocks, 668 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1112 ConstructedInterpolants, 59 QuantifiedInterpolants, 195008 SizeOfPredicates, 7 NumberOfNonLiveVariables, 988 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 695/796 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...