./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/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_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/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_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/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_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/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 0.1.25-f470102 [2019-12-07 16:57:14,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:57:14,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:57:14,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:57:14,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:57:14,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:57:14,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:57:14,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:57:14,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:57:14,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:57:14,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:57:14,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:57:14,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:57:14,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:57:14,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:57:14,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:57:14,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:57:14,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:57:14,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:57:14,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:57:14,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:57:14,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:57:14,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:57:14,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:57:14,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:57:14,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:57:14,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:57:14,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:57:14,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:57:14,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:57:14,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:57:14,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:57:14,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:57:14,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:57:14,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:57:14,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:57:14,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:57:14,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:57:14,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:57:14,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:57:14,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:57:14,124 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 16:57:14,133 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:57:14,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:57:14,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 16:57:14,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 16:57:14,134 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 16:57:14,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:57:14,134 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:57:14,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:57:14,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:57:14,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:57:14,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:57:14,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:57:14,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:57:14,135 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:57:14,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:57:14,135 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:57:14,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:57:14,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:57:14,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:57:14,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:57:14,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:57:14,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:57:14,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:57:14,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:57:14,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:57:14,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 16:57:14,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:57:14,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:57:14,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:57:14,137 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_e60c33d4-be06-419b-bf3c-7ff71964d5d3/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 [2019-12-07 16:57:14,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:57:14,248 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:57:14,251 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:57:14,252 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:57:14,253 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:57:14,253 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-12-07 16:57:14,290 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/data/ee1f18f0f/fd829ca9e047405288f42a0977dad672/FLAGc868bffe1 [2019-12-07 16:57:14,660 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:57:14,660 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-12-07 16:57:14,668 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/data/ee1f18f0f/fd829ca9e047405288f42a0977dad672/FLAGc868bffe1 [2019-12-07 16:57:14,678 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/data/ee1f18f0f/fd829ca9e047405288f42a0977dad672 [2019-12-07 16:57:14,680 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:57:14,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:57:14,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:57:14,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:57:14,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:57:14,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:57:14" (1/1) ... [2019-12-07 16:57:14,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c96923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:14, skipping insertion in model container [2019-12-07 16:57:14,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:57:14" (1/1) ... [2019-12-07 16:57:14,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:57:14,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:57:14,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:57:14,884 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:57:14,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:57:14,933 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:57:14,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:14 WrapperNode [2019-12-07 16:57:14,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:57:14,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:57:14,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:57:14,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:57:14,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:14" (1/1) ... [2019-12-07 16:57:14,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:14" (1/1) ... [2019-12-07 16:57:14,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:57:14,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:57:14,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:57:14,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:57:14,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:14" (1/1) ... [2019-12-07 16:57:14,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:14" (1/1) ... [2019-12-07 16:57:14,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:14" (1/1) ... [2019-12-07 16:57:14,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:14" (1/1) ... [2019-12-07 16:57:14,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:14" (1/1) ... [2019-12-07 16:57:14,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:14" (1/1) ... [2019-12-07 16:57:14,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:14" (1/1) ... [2019-12-07 16:57:14,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:57:14,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:57:14,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:57:14,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:57:14,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/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 [2019-12-07 16:57:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:57:15,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:57:15,100 WARN L738 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-12-07 16:57:15,360 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2019-12-07 16:57:15,360 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2019-12-07 16:57:15,361 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:57:15,361 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 16:57:15,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:57:15 BoogieIcfgContainer [2019-12-07 16:57:15,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:57:15,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:57:15,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:57:15,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:57:15,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:57:14" (1/3) ... [2019-12-07 16:57:15,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ba601b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:57:15, skipping insertion in model container [2019-12-07 16:57:15,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:14" (2/3) ... [2019-12-07 16:57:15,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ba601b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:57:15, skipping insertion in model container [2019-12-07 16:57:15,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:57:15" (3/3) ... [2019-12-07 16:57:15,367 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2019-12-07 16:57:15,373 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:57:15,378 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 16:57:15,385 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 16:57:15,401 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:57:15,401 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:57:15,401 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:57:15,401 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:57:15,401 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:57:15,401 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:57:15,402 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:57:15,402 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:57:15,413 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-12-07 16:57:15,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 16:57:15,418 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:57:15,418 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] [2019-12-07 16:57:15,418 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:57:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:57:15,422 INFO L82 PathProgramCache]: Analyzing trace with hash 511659491, now seen corresponding path program 1 times [2019-12-07 16:57:15,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:57:15,428 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457025608] [2019-12-07 16:57:15,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:57:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:57:15,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:57:15,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457025608] [2019-12-07 16:57:15,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:57:15,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:57:15,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930492912] [2019-12-07 16:57:15,557 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:57:15,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:57:15,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:57:15,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:57:15,568 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-12-07 16:57:15,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:57:15,676 INFO L93 Difference]: Finished difference Result 246 states and 422 transitions. [2019-12-07 16:57:15,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:57:15,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-12-07 16:57:15,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:57:15,685 INFO L225 Difference]: With dead ends: 246 [2019-12-07 16:57:15,685 INFO L226 Difference]: Without dead ends: 112 [2019-12-07 16:57:15,688 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 [2019-12-07 16:57:15,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-12-07 16:57:15,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-12-07 16:57:15,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-12-07 16:57:15,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions. [2019-12-07 16:57:15,717 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 24 [2019-12-07 16:57:15,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:57:15,717 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 170 transitions. [2019-12-07 16:57:15,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:57:15,717 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions. [2019-12-07 16:57:15,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-12-07 16:57:15,718 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:57:15,718 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] [2019-12-07 16:57:15,719 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:57:15,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:57:15,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1971493731, now seen corresponding path program 1 times [2019-12-07 16:57:15,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:57:15,719 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356308834] [2019-12-07 16:57:15,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:57:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:57:15,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:57:15,761 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356308834] [2019-12-07 16:57:15,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:57:15,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 16:57:15,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480498329] [2019-12-07 16:57:15,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:57:15,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:57:15,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:57:15,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:57:15,763 INFO L87 Difference]: Start difference. First operand 112 states and 170 transitions. Second operand 3 states. [2019-12-07 16:57:15,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:57:15,847 INFO L93 Difference]: Finished difference Result 232 states and 355 transitions. [2019-12-07 16:57:15,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:57:15,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-12-07 16:57:15,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:57:15,849 INFO L225 Difference]: With dead ends: 232 [2019-12-07 16:57:15,850 INFO L226 Difference]: Without dead ends: 130 [2019-12-07 16:57:15,851 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 [2019-12-07 16:57:15,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-12-07 16:57:15,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-12-07 16:57:15,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-12-07 16:57:15,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 190 transitions. [2019-12-07 16:57:15,861 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 190 transitions. Word has length 36 [2019-12-07 16:57:15,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:57:15,861 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 190 transitions. [2019-12-07 16:57:15,862 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:57:15,862 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 190 transitions. [2019-12-07 16:57:15,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-07 16:57:15,863 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:57:15,863 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] [2019-12-07 16:57:15,864 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:57:15,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:57:15,864 INFO L82 PathProgramCache]: Analyzing trace with hash 441356492, now seen corresponding path program 1 times [2019-12-07 16:57:15,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:57:15,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115309351] [2019-12-07 16:57:15,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:57:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:57:15,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 16:57:15,921 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115309351] [2019-12-07 16:57:15,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:57:15,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 16:57:15,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907609549] [2019-12-07 16:57:15,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:57:15,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:57:15,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:57:15,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:57:15,922 INFO L87 Difference]: Start difference. First operand 127 states and 190 transitions. Second operand 3 states. [2019-12-07 16:57:16,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:57:16,011 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2019-12-07 16:57:16,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:57:16,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-12-07 16:57:16,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:57:16,013 INFO L225 Difference]: With dead ends: 265 [2019-12-07 16:57:16,013 INFO L226 Difference]: Without dead ends: 148 [2019-12-07 16:57:16,013 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 [2019-12-07 16:57:16,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-12-07 16:57:16,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-12-07 16:57:16,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-12-07 16:57:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 212 transitions. [2019-12-07 16:57:16,021 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 212 transitions. Word has length 50 [2019-12-07 16:57:16,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:57:16,021 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 212 transitions. [2019-12-07 16:57:16,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:57:16,021 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 212 transitions. [2019-12-07 16:57:16,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-12-07 16:57:16,022 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:57:16,022 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] [2019-12-07 16:57:16,022 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:57:16,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:57:16,023 INFO L82 PathProgramCache]: Analyzing trace with hash -394489400, now seen corresponding path program 1 times [2019-12-07 16:57:16,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:57:16,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099231266] [2019-12-07 16:57:16,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:57:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:57:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:57:16,116 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:57:16,116 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 16:57:16,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:57:16 BoogieIcfgContainer [2019-12-07 16:57:16,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:57:16,155 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:57:16,155 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:57:16,155 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:57:16,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:57:15" (3/4) ... [2019-12-07 16:57:16,158 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 16:57:16,158 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:57:16,160 INFO L168 Benchmark]: Toolchain (without parser) took 1478.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 940.7 MB in the beginning and 908.9 MB in the end (delta: 31.8 MB). Peak memory consumption was 127.2 MB. Max. memory is 11.5 GB. [2019-12-07 16:57:16,160 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:57:16,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -144.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-12-07 16:57:16,161 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:57:16,162 INFO L168 Benchmark]: Boogie Preprocessor took 24.37 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:57:16,162 INFO L168 Benchmark]: RCFGBuilder took 369.22 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: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. [2019-12-07 16:57:16,162 INFO L168 Benchmark]: TraceAbstraction took 792.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 908.9 MB in the end (delta: 120.3 MB). Peak memory consumption was 120.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:57:16,163 INFO L168 Benchmark]: Witness Printer took 3.40 ms. Allocated memory is still 1.1 GB. Free memory is still 908.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:57:16,165 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 252.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -144.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.37 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 369.22 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: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 792.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 908.9 MB in the end (delta: 120.3 MB). Peak memory consumption was 120.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.40 ms. Allocated memory is still 1.1 GB. Free memory is still 908.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 614]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 301. Possible FailurePath: [L623] int __retres1 ; [L9] int s__info_callback = __VERIFIER_nondet_int(); [L10] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L11] int s__state ; [L12] int s__new_session ; [L13] int s__server ; [L14] unsigned int s__version = __VERIFIER_nondet_uint(); [L15] int s__type ; [L16] int s__init_num ; [L17] int s__bbio = __VERIFIER_nondet_int(); [L18] int s__wbio = __VERIFIER_nondet_int(); [L19] int s__hit = __VERIFIER_nondet_int(); [L20] int s__rwstate ; [L21] int s__init_buf___0 ; [L22] int s__debug = __VERIFIER_nondet_int(); [L23] int s__shutdown ; [L24] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L25] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L26] unsigned int s__ctx__stats__sess_connect ; [L27] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L29] int s__s3__change_cipher_spec ; [L30] int s__s3__flags ; [L31] int s__s3__delay_buf_pop_ret ; [L32] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L33] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__next_state___0 ; [L38] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L39] int s__session__cipher ; [L40] int s__session__compress_meth ; [L41] int buf ; [L42] unsigned long tmp ; [L43] unsigned long l ; [L44] int num1 ; [L45] int cb ; [L46] int ret ; [L47] int new_state ; [L48] int state ; [L49] int skip ; [L50] int tmp___0 ; [L51] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L52] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L53] int tmp___3 = __VERIFIER_nondet_int(); [L54] int tmp___4 = __VERIFIER_nondet_int(); [L55] int tmp___5 = __VERIFIER_nondet_int(); [L56] int tmp___6 = __VERIFIER_nondet_int(); [L57] int tmp___7 = __VERIFIER_nondet_int(); [L58] int tmp___8 = __VERIFIER_nondet_int(); [L59] int tmp___9 = __VERIFIER_nondet_int(); [L60] int blastFlag ; [L61] int ag_X ; [L62] int ag_Y ; [L63] int ag_Z ; [L64] int __retres60 ; [L67] s__state = 12292 [L68] blastFlag = 0 [L69] tmp = __VERIFIER_nondet_int() [L70] cb = 0 [L71] ret = -1 [L72] skip = 0 [L73] tmp___0 = 0 [L74] COND TRUE s__info_callback != 0 [L75] cb = s__info_callback [L83] s__in_handshake = s__in_handshake + 1 [L84] COND FALSE !(tmp___1 + 12288) [L93] COND TRUE \read(s__hit) [L94] ag_Y = 208 [L99] COND TRUE 1 [L101] state = s__state [L102] COND TRUE s__state == 12292 [L205] s__new_session = 1 [L206] s__state = 4096 [L207] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L212] s__server = 0 [L213] COND TRUE cb != 0 [L218] COND FALSE !(s__version + 65280 != 768) [L224] s__type = 4096 [L225] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L243] COND FALSE !(! tmp___4) [L249] COND FALSE !(! tmp___5) [L255] s__state = 4368 [L256] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L257] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND TRUE s__state == 4368 [L261] s__shutdown = 0 [L262] ret = __VERIFIER_nondet_int() [L263] COND TRUE blastFlag == 0 [L264] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] ag_X = s__state - 32 [L275] s__init_num = 0 [L276] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND TRUE s__state == 4384 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L294] COND FALSE !(ret <= 0) [L299] s__state = ag_X [L300] COND TRUE \read(s__hit) [L301] s__state = s__state | ag_Y [L305] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND FALSE !(s__state == 4416) [L138] COND FALSE !(s__state == 4417) [L141] COND TRUE s__state == 4432 [L351] ret = __VERIFIER_nondet_int() [L352] COND TRUE blastFlag <= 5 [L614] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 544 SDtfs, 37 SDslu, 265 SDs, 0 SdLazy, 283 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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, 0.0s SatisfiabilityAnalysisTime, 0.0s 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 0.1.25-f470102 [2019-12-07 16:57:17,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:57:17,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:57:17,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:57:17,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:57:17,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:57:17,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:57:17,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:57:17,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:57:17,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:57:17,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:57:17,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:57:17,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:57:17,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:57:17,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:57:17,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:57:17,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:57:17,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:57:17,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:57:17,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:57:17,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:57:17,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:57:17,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:57:17,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:57:17,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:57:17,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:57:17,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:57:17,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:57:17,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:57:17,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:57:17,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:57:17,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:57:17,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:57:17,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:57:17,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:57:17,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:57:17,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:57:17,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:57:17,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:57:17,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:57:17,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:57:17,554 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 16:57:17,565 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:57:17,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:57:17,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 16:57:17,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 16:57:17,567 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 16:57:17,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:57:17,567 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:57:17,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:57:17,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:57:17,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:57:17,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:57:17,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:57:17,568 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 16:57:17,568 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 16:57:17,568 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:57:17,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:57:17,569 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:57:17,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:57:17,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:57:17,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:57:17,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:57:17,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:57:17,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:57:17,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:57:17,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:57:17,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:57:17,570 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 16:57:17,570 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 16:57:17,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:57:17,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:57:17,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:57:17,571 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_e60c33d4-be06-419b-bf3c-7ff71964d5d3/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 [2019-12-07 16:57:17,738 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:57:17,748 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:57:17,751 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:57:17,752 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:57:17,753 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:57:17,753 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-12-07 16:57:17,799 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/data/b6b07c1e7/95e0fe08ac86447db32b40b78062d61a/FLAGaf2e3fda9 [2019-12-07 16:57:18,270 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:57:18,270 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-12-07 16:57:18,278 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/data/b6b07c1e7/95e0fe08ac86447db32b40b78062d61a/FLAGaf2e3fda9 [2019-12-07 16:57:18,288 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/data/b6b07c1e7/95e0fe08ac86447db32b40b78062d61a [2019-12-07 16:57:18,290 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:57:18,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:57:18,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:57:18,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:57:18,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:57:18,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:57:18" (1/1) ... [2019-12-07 16:57:18,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7673eb84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:18, skipping insertion in model container [2019-12-07 16:57:18,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:57:18" (1/1) ... [2019-12-07 16:57:18,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:57:18,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:57:18,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:57:18,495 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:57:18,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:57:18,571 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:57:18,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:18 WrapperNode [2019-12-07 16:57:18,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:57:18,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:57:18,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:57:18,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:57:18,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:18" (1/1) ... [2019-12-07 16:57:18,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:18" (1/1) ... [2019-12-07 16:57:18,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:57:18,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:57:18,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:57:18,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:57:18,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:18" (1/1) ... [2019-12-07 16:57:18,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:18" (1/1) ... [2019-12-07 16:57:18,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:18" (1/1) ... [2019-12-07 16:57:18,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:18" (1/1) ... [2019-12-07 16:57:18,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:18" (1/1) ... [2019-12-07 16:57:18,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:18" (1/1) ... [2019-12-07 16:57:18,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:18" (1/1) ... [2019-12-07 16:57:18,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:57:18,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:57:18,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:57:18,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:57:18,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/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 [2019-12-07 16:57:18,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:57:18,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:57:18,746 WARN L738 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-12-07 16:57:19,047 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2019-12-07 16:57:19,047 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2019-12-07 16:57:19,048 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:57:19,048 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 16:57:19,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:57:19 BoogieIcfgContainer [2019-12-07 16:57:19,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:57:19,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:57:19,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:57:19,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:57:19,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:57:18" (1/3) ... [2019-12-07 16:57:19,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56235b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:57:19, skipping insertion in model container [2019-12-07 16:57:19,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:57:18" (2/3) ... [2019-12-07 16:57:19,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56235b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:57:19, skipping insertion in model container [2019-12-07 16:57:19,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:57:19" (3/3) ... [2019-12-07 16:57:19,053 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2019-12-07 16:57:19,059 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:57:19,064 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 16:57:19,071 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 16:57:19,086 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:57:19,086 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:57:19,086 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:57:19,086 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:57:19,086 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:57:19,086 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:57:19,087 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:57:19,087 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:57:19,098 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-12-07 16:57:19,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 16:57:19,103 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:57:19,103 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] [2019-12-07 16:57:19,103 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:57:19,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:57:19,107 INFO L82 PathProgramCache]: Analyzing trace with hash 511659491, now seen corresponding path program 1 times [2019-12-07 16:57:19,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:57:19,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289574325] [2019-12-07 16:57:19,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 16:57:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:57:19,174 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:57:19,178 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:57:19,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:57:19,205 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:57:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:57:19,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289574325] [2019-12-07 16:57:19,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:57:19,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 16:57:19,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387586069] [2019-12-07 16:57:19,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:57:19,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:57:19,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:57:19,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:57:19,227 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-12-07 16:57:19,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:57:19,348 INFO L93 Difference]: Finished difference Result 246 states and 422 transitions. [2019-12-07 16:57:19,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:57:19,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-12-07 16:57:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:57:19,358 INFO L225 Difference]: With dead ends: 246 [2019-12-07 16:57:19,358 INFO L226 Difference]: Without dead ends: 112 [2019-12-07 16:57:19,360 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 [2019-12-07 16:57:19,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-12-07 16:57:19,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-12-07 16:57:19,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-12-07 16:57:19,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions. [2019-12-07 16:57:19,391 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 24 [2019-12-07 16:57:19,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:57:19,392 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 170 transitions. [2019-12-07 16:57:19,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:57:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions. [2019-12-07 16:57:19,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-12-07 16:57:19,393 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:57:19,393 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] [2019-12-07 16:57:19,594 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 16:57:19,594 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:57:19,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:57:19,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1971493731, now seen corresponding path program 1 times [2019-12-07 16:57:19,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:57:19,595 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742506306] [2019-12-07 16:57:19,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 16:57:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:57:19,652 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:57:19,654 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:57:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:57:19,662 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:57:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:57:19,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742506306] [2019-12-07 16:57:19,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:57:19,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 16:57:19,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161859878] [2019-12-07 16:57:19,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:57:19,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:57:19,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:57:19,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:57:19,668 INFO L87 Difference]: Start difference. First operand 112 states and 170 transitions. Second operand 3 states. [2019-12-07 16:57:19,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:57:19,773 INFO L93 Difference]: Finished difference Result 232 states and 355 transitions. [2019-12-07 16:57:19,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:57:19,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-12-07 16:57:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:57:19,775 INFO L225 Difference]: With dead ends: 232 [2019-12-07 16:57:19,775 INFO L226 Difference]: Without dead ends: 130 [2019-12-07 16:57:19,776 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 [2019-12-07 16:57:19,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-12-07 16:57:19,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-12-07 16:57:19,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-12-07 16:57:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 190 transitions. [2019-12-07 16:57:19,784 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 190 transitions. Word has length 36 [2019-12-07 16:57:19,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:57:19,785 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 190 transitions. [2019-12-07 16:57:19,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:57:19,785 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 190 transitions. [2019-12-07 16:57:19,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-07 16:57:19,786 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:57:19,786 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] [2019-12-07 16:57:19,987 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 16:57:19,987 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:57:19,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:57:19,988 INFO L82 PathProgramCache]: Analyzing trace with hash 441356492, now seen corresponding path program 1 times [2019-12-07 16:57:19,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:57:19,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758686153] [2019-12-07 16:57:19,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 16:57:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:57:20,084 INFO L264 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:57:20,086 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:57:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 16:57:20,094 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:57:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 16:57:20,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758686153] [2019-12-07 16:57:20,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:57:20,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 16:57:20,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898901114] [2019-12-07 16:57:20,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:57:20,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:57:20,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:57:20,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:57:20,100 INFO L87 Difference]: Start difference. First operand 127 states and 190 transitions. Second operand 3 states. [2019-12-07 16:57:20,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:57:20,194 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2019-12-07 16:57:20,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:57:20,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-12-07 16:57:20,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:57:20,196 INFO L225 Difference]: With dead ends: 265 [2019-12-07 16:57:20,196 INFO L226 Difference]: Without dead ends: 148 [2019-12-07 16:57:20,197 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 [2019-12-07 16:57:20,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-12-07 16:57:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-12-07 16:57:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-12-07 16:57:20,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 212 transitions. [2019-12-07 16:57:20,207 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 212 transitions. Word has length 50 [2019-12-07 16:57:20,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:57:20,207 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 212 transitions. [2019-12-07 16:57:20,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:57:20,207 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 212 transitions. [2019-12-07 16:57:20,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-12-07 16:57:20,210 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:57:20,210 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] [2019-12-07 16:57:20,410 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 16:57:20,411 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:57:20,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:57:20,412 INFO L82 PathProgramCache]: Analyzing trace with hash -394489400, now seen corresponding path program 1 times [2019-12-07 16:57:20,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:57:20,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947540362] [2019-12-07 16:57:20,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 16:57:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:57:20,506 INFO L264 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 16:57:20,508 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:57:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-07 16:57:20,569 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:57:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-07 16:57:20,636 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947540362] [2019-12-07 16:57:20,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 16:57:20,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-12-07 16:57:20,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717929155] [2019-12-07 16:57:20,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 16:57:20,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:57:20,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 16:57:20,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:57:20,638 INFO L87 Difference]: Start difference. First operand 144 states and 212 transitions. Second operand 6 states. [2019-12-07 16:57:21,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:57:21,037 INFO L93 Difference]: Finished difference Result 513 states and 781 transitions. [2019-12-07 16:57:21,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 16:57:21,038 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2019-12-07 16:57:21,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:57:21,041 INFO L225 Difference]: With dead ends: 513 [2019-12-07 16:57:21,041 INFO L226 Difference]: Without dead ends: 378 [2019-12-07 16:57:21,042 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 [2019-12-07 16:57:21,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2019-12-07 16:57:21,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 366. [2019-12-07 16:57:21,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2019-12-07 16:57:21,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 540 transitions. [2019-12-07 16:57:21,064 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 540 transitions. Word has length 67 [2019-12-07 16:57:21,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:57:21,064 INFO L462 AbstractCegarLoop]: Abstraction has 366 states and 540 transitions. [2019-12-07 16:57:21,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 16:57:21,064 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 540 transitions. [2019-12-07 16:57:21,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-12-07 16:57:21,067 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:57:21,067 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] [2019-12-07 16:57:21,267 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 16:57:21,268 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:57:21,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:57:21,268 INFO L82 PathProgramCache]: Analyzing trace with hash 2095039562, now seen corresponding path program 1 times [2019-12-07 16:57:21,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:57:21,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403291173] [2019-12-07 16:57:21,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 16:57:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:57:21,312 INFO L264 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:57:21,314 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:57:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-07 16:57:21,324 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:57:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-07 16:57:21,333 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403291173] [2019-12-07 16:57:21,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:57:21,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 16:57:21,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479545493] [2019-12-07 16:57:21,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:57:21,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:57:21,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:57:21,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:57:21,335 INFO L87 Difference]: Start difference. First operand 366 states and 540 transitions. Second operand 3 states. [2019-12-07 16:57:21,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:57:21,365 INFO L93 Difference]: Finished difference Result 874 states and 1297 transitions. [2019-12-07 16:57:21,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:57:21,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-12-07 16:57:21,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:57:21,368 INFO L225 Difference]: With dead ends: 874 [2019-12-07 16:57:21,368 INFO L226 Difference]: Without dead ends: 521 [2019-12-07 16:57:21,369 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 [2019-12-07 16:57:21,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2019-12-07 16:57:21,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 519. [2019-12-07 16:57:21,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-12-07 16:57:21,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 768 transitions. [2019-12-07 16:57:21,385 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 768 transitions. Word has length 67 [2019-12-07 16:57:21,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:57:21,386 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 768 transitions. [2019-12-07 16:57:21,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:57:21,386 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 768 transitions. [2019-12-07 16:57:21,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-12-07 16:57:21,388 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:57:21,388 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] [2019-12-07 16:57:21,588 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 16:57:21,589 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:57:21,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:57:21,589 INFO L82 PathProgramCache]: Analyzing trace with hash -811886006, now seen corresponding path program 1 times [2019-12-07 16:57:21,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:57:21,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511763107] [2019-12-07 16:57:21,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 16:57:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:57:21,652 INFO L264 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:57:21,654 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:57:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-07 16:57:21,663 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:57:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-12-07 16:57:21,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511763107] [2019-12-07 16:57:21,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:57:21,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 16:57:21,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621613313] [2019-12-07 16:57:21,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:57:21,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:57:21,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:57:21,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:57:21,671 INFO L87 Difference]: Start difference. First operand 519 states and 768 transitions. Second operand 3 states. [2019-12-07 16:57:21,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:57:21,692 INFO L93 Difference]: Finished difference Result 523 states and 770 transitions. [2019-12-07 16:57:21,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:57:21,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-12-07 16:57:21,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:57:21,694 INFO L225 Difference]: With dead ends: 523 [2019-12-07 16:57:21,694 INFO L226 Difference]: Without dead ends: 366 [2019-12-07 16:57:21,695 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 [2019-12-07 16:57:21,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2019-12-07 16:57:21,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 364. [2019-12-07 16:57:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-12-07 16:57:21,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 531 transitions. [2019-12-07 16:57:21,703 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 531 transitions. Word has length 67 [2019-12-07 16:57:21,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:57:21,704 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 531 transitions. [2019-12-07 16:57:21,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:57:21,704 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 531 transitions. [2019-12-07 16:57:21,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-12-07 16:57:21,704 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:57:21,704 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] [2019-12-07 16:57:21,905 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 16:57:21,906 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:57:21,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:57:21,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1677642956, now seen corresponding path program 1 times [2019-12-07 16:57:21,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:57:21,908 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775102310] [2019-12-07 16:57:21,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-12-07 16:57:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:57:21,991 INFO L264 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 16:57:21,992 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:57:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 16:57:22,033 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:57:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 16:57:22,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775102310] [2019-12-07 16:57:22,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 16:57:22,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-12-07 16:57:22,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394024772] [2019-12-07 16:57:22,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 16:57:22,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:57:22,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 16:57:22,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-12-07 16:57:22,079 INFO L87 Difference]: Start difference. First operand 364 states and 531 transitions. Second operand 11 states. [2019-12-07 16:57:22,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:57:22,771 INFO L93 Difference]: Finished difference Result 828 states and 1231 transitions. [2019-12-07 16:57:22,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-12-07 16:57:22,771 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2019-12-07 16:57:22,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:57:22,774 INFO L225 Difference]: With dead ends: 828 [2019-12-07 16:57:22,774 INFO L226 Difference]: Without dead ends: 672 [2019-12-07 16:57:22,775 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2019-12-07 16:57:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2019-12-07 16:57:22,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 423. [2019-12-07 16:57:22,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2019-12-07 16:57:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 600 transitions. [2019-12-07 16:57:22,786 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 600 transitions. Word has length 67 [2019-12-07 16:57:22,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:57:22,786 INFO L462 AbstractCegarLoop]: Abstraction has 423 states and 600 transitions. [2019-12-07 16:57:22,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 16:57:22,787 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 600 transitions. [2019-12-07 16:57:22,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-12-07 16:57:22,787 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:57:22,787 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] [2019-12-07 16:57:22,988 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 16:57:22,988 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:57:22,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:57:22,988 INFO L82 PathProgramCache]: Analyzing trace with hash -602651212, now seen corresponding path program 1 times [2019-12-07 16:57:22,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:57:22,989 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693678837] [2019-12-07 16:57:22,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-12-07 16:57:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:57:23,030 INFO L264 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:57:23,032 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:57:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-12-07 16:57:23,039 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:57:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-12-07 16:57:23,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693678837] [2019-12-07 16:57:23,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:57:23,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 16:57:23,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502666767] [2019-12-07 16:57:23,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:57:23,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:57:23,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:57:23,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:57:23,046 INFO L87 Difference]: Start difference. First operand 423 states and 600 transitions. Second operand 3 states. [2019-12-07 16:57:23,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:57:23,149 INFO L93 Difference]: Finished difference Result 881 states and 1266 transitions. [2019-12-07 16:57:23,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:57:23,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2019-12-07 16:57:23,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:57:23,151 INFO L225 Difference]: With dead ends: 881 [2019-12-07 16:57:23,151 INFO L226 Difference]: Without dead ends: 471 [2019-12-07 16:57:23,152 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 [2019-12-07 16:57:23,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-12-07 16:57:23,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 465. [2019-12-07 16:57:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2019-12-07 16:57:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 652 transitions. [2019-12-07 16:57:23,165 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 652 transitions. Word has length 84 [2019-12-07 16:57:23,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:57:23,166 INFO L462 AbstractCegarLoop]: Abstraction has 465 states and 652 transitions. [2019-12-07 16:57:23,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:57:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 652 transitions. [2019-12-07 16:57:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-12-07 16:57:23,167 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:57:23,167 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] [2019-12-07 16:57:23,367 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 16:57:23,368 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:57:23,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:57:23,368 INFO L82 PathProgramCache]: Analyzing trace with hash -801029670, now seen corresponding path program 1 times [2019-12-07 16:57:23,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:57:23,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798382339] [2019-12-07 16:57:23,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-12-07 16:57:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:57:23,416 INFO L264 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:57:23,418 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:57:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-12-07 16:57:23,437 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:57:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-12-07 16:57:23,455 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798382339] [2019-12-07 16:57:23,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:57:23,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 16:57:23,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690008314] [2019-12-07 16:57:23,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:57:23,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 16:57:23,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:57:23,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:57:23,456 INFO L87 Difference]: Start difference. First operand 465 states and 652 transitions. Second operand 4 states. [2019-12-07 16:57:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:57:23,515 INFO L93 Difference]: Finished difference Result 1415 states and 1978 transitions. [2019-12-07 16:57:23,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:57:23,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-12-07 16:57:23,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:57:23,521 INFO L225 Difference]: With dead ends: 1415 [2019-12-07 16:57:23,521 INFO L226 Difference]: Without dead ends: 963 [2019-12-07 16:57:23,522 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 [2019-12-07 16:57:23,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2019-12-07 16:57:23,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 959. [2019-12-07 16:57:23,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-12-07 16:57:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1327 transitions. [2019-12-07 16:57:23,554 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1327 transitions. Word has length 103 [2019-12-07 16:57:23,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:57:23,554 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1327 transitions. [2019-12-07 16:57:23,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:57:23,554 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1327 transitions. [2019-12-07 16:57:23,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-12-07 16:57:23,556 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:57:23,556 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] [2019-12-07 16:57:23,756 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2019-12-07 16:57:23,757 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:57:23,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:57:23,757 INFO L82 PathProgramCache]: Analyzing trace with hash -935043176, now seen corresponding path program 1 times [2019-12-07 16:57:23,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 16:57:23,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017668075] [2019-12-07 16:57:23,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2019-12-07 16:57:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:57:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:57:23,969 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 16:57:23,970 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 16:57:24,170 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2019-12-07 16:57:24,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:57:24 BoogieIcfgContainer [2019-12-07 16:57:24,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:57:24,212 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:57:24,212 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:57:24,212 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:57:24,212 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:57:19" (3/4) ... [2019-12-07 16:57:24,214 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 16:57:24,273 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e60c33d4-be06-419b-bf3c-7ff71964d5d3/bin/uautomizer/witness.graphml [2019-12-07 16:57:24,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:57:24,274 INFO L168 Benchmark]: Toolchain (without parser) took 5982.83 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 313.0 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -283.4 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. [2019-12-07 16:57:24,274 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:57:24,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-12-07 16:57:24,275 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:57:24,275 INFO L168 Benchmark]: Boogie Preprocessor took 26.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:57:24,275 INFO L168 Benchmark]: RCFGBuilder took 415.60 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: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 11.5 GB. [2019-12-07 16:57:24,275 INFO L168 Benchmark]: TraceAbstraction took 5161.75 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 182.5 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -187.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:57:24,275 INFO L168 Benchmark]: Witness Printer took 61.17 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:57:24,277 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 280.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 415.60 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: 53.7 MB). Peak memory consumption was 53.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5161.75 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 182.5 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -187.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 61.17 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 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: 5.0s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1698 SDtfs, 1753 SDslu, 2509 SDs, 0 SdLazy, 1659 SolverSat, 239 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1122 GetRequests, 1091 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 282 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s 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...