./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/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_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/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_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/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_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a482892abf67e79a3ae4664db384c404b0bcc555 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 05:11:43,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:11:43,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:11:43,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:11:43,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:11:43,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:11:43,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:11:43,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:11:43,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:11:43,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:11:43,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:11:43,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:11:43,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:11:43,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:11:43,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:11:43,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:11:43,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:11:43,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:11:43,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:11:43,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:11:43,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:11:43,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:11:43,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:11:43,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:11:43,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:11:43,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:11:43,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:11:43,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:11:43,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:11:43,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:11:43,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:11:43,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:11:43,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:11:43,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:11:43,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:11:43,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:11:43,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:11:43,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:11:43,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:11:43,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:11:43,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:11:43,555 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 05:11:43,588 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:11:43,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:11:43,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:11:43,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:11:43,590 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:11:43,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:11:43,591 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:11:43,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:11:43,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:11:43,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:11:43,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:11:43,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:11:43,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:11:43,592 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:11:43,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:11:43,593 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:11:43,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:11:43,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:11:43,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:11:43,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:11:43,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:11:43,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:11:43,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:11:43,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:11:43,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:11:43,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 05:11:43,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 05:11:43,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:11:43,597 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_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a482892abf67e79a3ae4664db384c404b0bcc555 [2019-11-20 05:11:43,749 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:11:43,762 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:11:43,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:11:43,768 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:11:43,771 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:11:43,771 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-11-20 05:11:43,831 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/data/42293e7ff/47143b16e00a4f76b6057a49cc826b54/FLAG47c536890 [2019-11-20 05:11:44,243 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:11:44,243 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-11-20 05:11:44,254 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/data/42293e7ff/47143b16e00a4f76b6057a49cc826b54/FLAG47c536890 [2019-11-20 05:11:44,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/data/42293e7ff/47143b16e00a4f76b6057a49cc826b54 [2019-11-20 05:11:44,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:11:44,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:11:44,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:11:44,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:11:44,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:11:44,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:11:44" (1/1) ... [2019-11-20 05:11:44,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@279eeeb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:44, skipping insertion in model container [2019-11-20 05:11:44,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:11:44" (1/1) ... [2019-11-20 05:11:44,283 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:11:44,314 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:11:44,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:11:44,678 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:11:44,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:11:44,738 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:11:44,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:44 WrapperNode [2019-11-20 05:11:44,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:11:44,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:11:44,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:11:44,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:11:44,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:44" (1/1) ... [2019-11-20 05:11:44,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:44" (1/1) ... [2019-11-20 05:11:44,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:11:44,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:11:44,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:11:44,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:11:44,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:44" (1/1) ... [2019-11-20 05:11:44,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:44" (1/1) ... [2019-11-20 05:11:44,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:44" (1/1) ... [2019-11-20 05:11:44,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:44" (1/1) ... [2019-11-20 05:11:44,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:44" (1/1) ... [2019-11-20 05:11:44,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:44" (1/1) ... [2019-11-20 05:11:44,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:44" (1/1) ... [2019-11-20 05:11:44,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:11:44,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:11:44,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:11:44,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:11:44,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:11:44,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:11:44,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:11:44,989 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 05:11:45,514 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2019-11-20 05:11:45,516 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2019-11-20 05:11:45,517 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:11:45,517 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 05:11:45,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:11:45 BoogieIcfgContainer [2019-11-20 05:11:45,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:11:45,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:11:45,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:11:45,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:11:45,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:11:44" (1/3) ... [2019-11-20 05:11:45,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1f3c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:11:45, skipping insertion in model container [2019-11-20 05:11:45,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:44" (2/3) ... [2019-11-20 05:11:45,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1f3c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:11:45, skipping insertion in model container [2019-11-20 05:11:45,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:11:45" (3/3) ... [2019-11-20 05:11:45,526 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2019-11-20 05:11:45,541 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:11:45,547 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 05:11:45,558 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 05:11:45,597 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:11:45,598 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 05:11:45,598 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:11:45,598 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:11:45,598 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:11:45,599 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:11:45,599 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:11:45,599 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:11:45,616 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-11-20 05:11:45,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 05:11:45,623 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:11:45,624 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:11:45,625 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:11:45,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:11:45,630 INFO L82 PathProgramCache]: Analyzing trace with hash 511659491, now seen corresponding path program 1 times [2019-11-20 05:11:45,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:11:45,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466015225] [2019-11-20 05:11:45,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:11:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:11:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:11:45,819 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466015225] [2019-11-20 05:11:45,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:11:45,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 05:11:45,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605110378] [2019-11-20 05:11:45,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:11:45,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:11:45,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:11:45,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:45,841 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-11-20 05:11:46,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:11:46,058 INFO L93 Difference]: Finished difference Result 246 states and 422 transitions. [2019-11-20 05:11:46,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:11:46,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-20 05:11:46,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:11:46,072 INFO L225 Difference]: With dead ends: 246 [2019-11-20 05:11:46,073 INFO L226 Difference]: Without dead ends: 112 [2019-11-20 05:11:46,075 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:46,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-20 05:11:46,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-11-20 05:11:46,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-20 05:11:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions. [2019-11-20 05:11:46,118 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 24 [2019-11-20 05:11:46,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:11:46,118 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 170 transitions. [2019-11-20 05:11:46,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:11:46,119 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions. [2019-11-20 05:11:46,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 05:11:46,120 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:11:46,120 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:11:46,121 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:11:46,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:11:46,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1971493731, now seen corresponding path program 1 times [2019-11-20 05:11:46,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:11:46,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307804340] [2019-11-20 05:11:46,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:11:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:11:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:11:46,191 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307804340] [2019-11-20 05:11:46,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:11:46,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 05:11:46,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240215407] [2019-11-20 05:11:46,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:11:46,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:11:46,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:11:46,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:46,194 INFO L87 Difference]: Start difference. First operand 112 states and 170 transitions. Second operand 3 states. [2019-11-20 05:11:46,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:11:46,385 INFO L93 Difference]: Finished difference Result 232 states and 355 transitions. [2019-11-20 05:11:46,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:11:46,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-11-20 05:11:46,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:11:46,388 INFO L225 Difference]: With dead ends: 232 [2019-11-20 05:11:46,388 INFO L226 Difference]: Without dead ends: 130 [2019-11-20 05:11:46,389 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:46,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-11-20 05:11:46,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-11-20 05:11:46,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-20 05:11:46,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 190 transitions. [2019-11-20 05:11:46,409 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 190 transitions. Word has length 36 [2019-11-20 05:11:46,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:11:46,410 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 190 transitions. [2019-11-20 05:11:46,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:11:46,410 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 190 transitions. [2019-11-20 05:11:46,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-20 05:11:46,416 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:11:46,416 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:11:46,416 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:11:46,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:11:46,417 INFO L82 PathProgramCache]: Analyzing trace with hash 441356492, now seen corresponding path program 1 times [2019-11-20 05:11:46,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:11:46,417 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929080324] [2019-11-20 05:11:46,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:11:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:11:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 05:11:46,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929080324] [2019-11-20 05:11:46,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:11:46,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 05:11:46,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530413596] [2019-11-20 05:11:46,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:11:46,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:11:46,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:11:46,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:46,506 INFO L87 Difference]: Start difference. First operand 127 states and 190 transitions. Second operand 3 states. [2019-11-20 05:11:46,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:11:46,652 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2019-11-20 05:11:46,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:11:46,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-11-20 05:11:46,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:11:46,655 INFO L225 Difference]: With dead ends: 265 [2019-11-20 05:11:46,655 INFO L226 Difference]: Without dead ends: 148 [2019-11-20 05:11:46,656 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:46,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-11-20 05:11:46,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-11-20 05:11:46,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-20 05:11:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 212 transitions. [2019-11-20 05:11:46,667 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 212 transitions. Word has length 50 [2019-11-20 05:11:46,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:11:46,667 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 212 transitions. [2019-11-20 05:11:46,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:11:46,667 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 212 transitions. [2019-11-20 05:11:46,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-20 05:11:46,669 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:11:46,669 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:11:46,670 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:11:46,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:11:46,670 INFO L82 PathProgramCache]: Analyzing trace with hash -394489400, now seen corresponding path program 1 times [2019-11-20 05:11:46,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:11:46,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624664865] [2019-11-20 05:11:46,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:11:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:11:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:11:46,845 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:11:46,845 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 05:11:46,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:11:46 BoogieIcfgContainer [2019-11-20 05:11:46,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 05:11:46,917 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:11:46,918 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:11:46,918 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:11:46,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:11:45" (3/4) ... [2019-11-20 05:11:46,922 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 05:11:46,923 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:11:46,925 INFO L168 Benchmark]: Toolchain (without parser) took 2654.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 950.1 MB in the beginning and 950.8 MB in the end (delta: -706.8 kB). Peak memory consumption was 130.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:11:46,926 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:11:46,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 469.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -170.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-20 05:11:46,928 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:11:46,929 INFO L168 Benchmark]: Boogie Preprocessor took 33.34 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:11:46,929 INFO L168 Benchmark]: RCFGBuilder took 692.30 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: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 11.5 GB. [2019-11-20 05:11:46,934 INFO L168 Benchmark]: TraceAbstraction took 1397.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 950.8 MB in the end (delta: 113.7 MB). Peak memory consumption was 113.7 MB. Max. memory is 11.5 GB. [2019-11-20 05:11:46,935 INFO L168 Benchmark]: Witness Printer took 5.41 ms. Allocated memory is still 1.2 GB. Free memory is still 950.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:11:46,939 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 469.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -170.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.08 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 33.34 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 692.30 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: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1397.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 950.8 MB in the end (delta: 113.7 MB). Peak memory consumption was 113.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.41 ms. Allocated memory is still 1.2 GB. Free memory is still 950.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 614]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 301. Possible FailurePath: [L623] int __retres1 ; [L9] int s__info_callback = __VERIFIER_nondet_int(); [L10] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L11] int s__state ; [L12] int s__new_session ; [L13] int s__server ; [L14] unsigned int s__version = __VERIFIER_nondet_uint(); [L15] int s__type ; [L16] int s__init_num ; [L17] int s__bbio = __VERIFIER_nondet_int(); [L18] int s__wbio = __VERIFIER_nondet_int(); [L19] int s__hit = __VERIFIER_nondet_int(); [L20] int s__rwstate ; [L21] int s__init_buf___0 ; [L22] int s__debug = __VERIFIER_nondet_int(); [L23] int s__shutdown ; [L24] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L25] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L26] unsigned int s__ctx__stats__sess_connect ; [L27] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L29] int s__s3__change_cipher_spec ; [L30] int s__s3__flags ; [L31] int s__s3__delay_buf_pop_ret ; [L32] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L33] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__next_state___0 ; [L38] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L39] int s__session__cipher ; [L40] int s__session__compress_meth ; [L41] int buf ; [L42] unsigned long tmp ; [L43] unsigned long l ; [L44] int num1 ; [L45] int cb ; [L46] int ret ; [L47] int new_state ; [L48] int state ; [L49] int skip ; [L50] int tmp___0 ; [L51] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L52] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L53] int tmp___3 = __VERIFIER_nondet_int(); [L54] int tmp___4 = __VERIFIER_nondet_int(); [L55] int tmp___5 = __VERIFIER_nondet_int(); [L56] int tmp___6 = __VERIFIER_nondet_int(); [L57] int tmp___7 = __VERIFIER_nondet_int(); [L58] int tmp___8 = __VERIFIER_nondet_int(); [L59] int tmp___9 = __VERIFIER_nondet_int(); [L60] int blastFlag ; [L61] int ag_X ; [L62] int ag_Y ; [L63] int ag_Z ; [L64] int __retres60 ; [L67] s__state = 12292 [L68] blastFlag = 0 [L69] tmp = __VERIFIER_nondet_int() [L70] cb = 0 [L71] ret = -1 [L72] skip = 0 [L73] tmp___0 = 0 [L74] COND TRUE s__info_callback != 0 [L75] cb = s__info_callback [L83] s__in_handshake = s__in_handshake + 1 [L84] COND FALSE !(tmp___1 + 12288) [L93] COND TRUE \read(s__hit) [L94] ag_Y = 208 [L99] COND TRUE 1 [L101] state = s__state [L102] COND TRUE s__state == 12292 [L205] s__new_session = 1 [L206] s__state = 4096 [L207] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L212] s__server = 0 [L213] COND TRUE cb != 0 [L218] COND FALSE !(s__version + 65280 != 768) [L224] s__type = 4096 [L225] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L243] COND FALSE !(! tmp___4) [L249] COND FALSE !(! tmp___5) [L255] s__state = 4368 [L256] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L257] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND TRUE s__state == 4368 [L261] s__shutdown = 0 [L262] ret = __VERIFIER_nondet_int() [L263] COND TRUE blastFlag == 0 [L264] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] ag_X = s__state - 32 [L275] s__init_num = 0 [L276] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND TRUE s__state == 4384 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L294] COND FALSE !(ret <= 0) [L299] s__state = ag_X [L300] COND TRUE \read(s__hit) [L301] s__state = s__state | ag_Y [L305] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND FALSE !(s__state == 4416) [L138] COND FALSE !(s__state == 4417) [L141] COND TRUE s__state == 4432 [L351] ret = __VERIFIER_nondet_int() [L352] COND TRUE blastFlag <= 5 [L614] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 544 SDtfs, 37 SDslu, 265 SDs, 0 SdLazy, 283 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 6451 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 19/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 05:11:48,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:11:48,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:11:48,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:11:48,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:11:48,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:11:48,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:11:48,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:11:48,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:11:48,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:11:48,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:11:48,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:11:48,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:11:48,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:11:48,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:11:48,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:11:48,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:11:48,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:11:48,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:11:48,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:11:48,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:11:48,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:11:48,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:11:48,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:11:48,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:11:48,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:11:48,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:11:48,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:11:48,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:11:48,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:11:48,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:11:48,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:11:48,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:11:48,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:11:48,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:11:48,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:11:48,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:11:48,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:11:48,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:11:48,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:11:48,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:11:48,768 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 05:11:48,782 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:11:48,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:11:48,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:11:48,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:11:48,784 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:11:48,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:11:48,784 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:11:48,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:11:48,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:11:48,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 05:11:48,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:11:48,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 05:11:48,786 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 05:11:48,786 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 05:11:48,786 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:11:48,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:11:48,787 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:11:48,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 05:11:48,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:11:48,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:11:48,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:11:48,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:11:48,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:11:48,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:11:48,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:11:48,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 05:11:48,790 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 05:11:48,790 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 05:11:48,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 05:11:48,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 05:11:48,791 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_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a482892abf67e79a3ae4664db384c404b0bcc555 [2019-11-20 05:11:49,047 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:11:49,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:11:49,062 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:11:49,063 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:11:49,063 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:11:49,064 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-11-20 05:11:49,108 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/data/fee526ee9/05063b29514b428fb5a25e9a8e14c8a9/FLAG2e0b251dc [2019-11-20 05:11:49,499 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:11:49,501 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-11-20 05:11:49,511 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/data/fee526ee9/05063b29514b428fb5a25e9a8e14c8a9/FLAG2e0b251dc [2019-11-20 05:11:49,845 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/data/fee526ee9/05063b29514b428fb5a25e9a8e14c8a9 [2019-11-20 05:11:49,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:11:49,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:11:49,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:11:49,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:11:49,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:11:49,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:11:49" (1/1) ... [2019-11-20 05:11:49,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@778c5f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:49, skipping insertion in model container [2019-11-20 05:11:49,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:11:49" (1/1) ... [2019-11-20 05:11:49,868 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:11:49,931 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:11:50,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:11:50,196 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:11:50,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:11:50,320 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:11:50,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:50 WrapperNode [2019-11-20 05:11:50,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:11:50,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:11:50,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:11:50,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:11:50,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:50" (1/1) ... [2019-11-20 05:11:50,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:50" (1/1) ... [2019-11-20 05:11:50,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:11:50,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:11:50,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:11:50,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:11:50,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:50" (1/1) ... [2019-11-20 05:11:50,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:50" (1/1) ... [2019-11-20 05:11:50,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:50" (1/1) ... [2019-11-20 05:11:50,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:50" (1/1) ... [2019-11-20 05:11:50,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:50" (1/1) ... [2019-11-20 05:11:50,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:50" (1/1) ... [2019-11-20 05:11:50,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:50" (1/1) ... [2019-11-20 05:11:50,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:11:50,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:11:50,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:11:50,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:11:50,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:11:50,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:11:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:11:50,579 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 05:11:51,078 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2019-11-20 05:11:51,079 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2019-11-20 05:11:51,080 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:11:51,080 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 05:11:51,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:11:51 BoogieIcfgContainer [2019-11-20 05:11:51,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:11:51,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:11:51,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:11:51,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:11:51,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:11:49" (1/3) ... [2019-11-20 05:11:51,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3b7cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:11:51, skipping insertion in model container [2019-11-20 05:11:51,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:11:50" (2/3) ... [2019-11-20 05:11:51,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3b7cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:11:51, skipping insertion in model container [2019-11-20 05:11:51,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:11:51" (3/3) ... [2019-11-20 05:11:51,088 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2019-11-20 05:11:51,097 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:11:51,110 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 05:11:51,120 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 05:11:51,152 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:11:51,153 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 05:11:51,153 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:11:51,153 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:11:51,154 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:11:51,154 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:11:51,154 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:11:51,154 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:11:51,175 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-11-20 05:11:51,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 05:11:51,183 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:11:51,184 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:11:51,185 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:11:51,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:11:51,190 INFO L82 PathProgramCache]: Analyzing trace with hash 511659491, now seen corresponding path program 1 times [2019-11-20 05:11:51,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:11:51,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [910470607] [2019-11-20 05:11:51,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:11:51,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:11:51,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:11:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:11:51,355 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:11:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:11:51,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [910470607] [2019-11-20 05:11:51,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:11:51,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 05:11:51,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065809391] [2019-11-20 05:11:51,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:11:51,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:11:51,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:11:51,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:51,395 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-11-20 05:11:51,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:11:51,607 INFO L93 Difference]: Finished difference Result 246 states and 422 transitions. [2019-11-20 05:11:51,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:11:51,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-20 05:11:51,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:11:51,620 INFO L225 Difference]: With dead ends: 246 [2019-11-20 05:11:51,621 INFO L226 Difference]: Without dead ends: 112 [2019-11-20 05:11:51,625 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:51,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-20 05:11:51,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-11-20 05:11:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-20 05:11:51,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions. [2019-11-20 05:11:51,687 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 24 [2019-11-20 05:11:51,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:11:51,688 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 170 transitions. [2019-11-20 05:11:51,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:11:51,688 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions. [2019-11-20 05:11:51,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 05:11:51,690 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:11:51,690 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:11:51,892 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:51,892 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:11:51,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:11:51,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1971493731, now seen corresponding path program 1 times [2019-11-20 05:11:51,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:11:51,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2009036945] [2019-11-20 05:11:51,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:11:51,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:11:51,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:11:52,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:11:52,009 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:11:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:11:52,015 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2009036945] [2019-11-20 05:11:52,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:11:52,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 05:11:52,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762527507] [2019-11-20 05:11:52,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:11:52,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:11:52,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:11:52,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:52,019 INFO L87 Difference]: Start difference. First operand 112 states and 170 transitions. Second operand 3 states. [2019-11-20 05:11:52,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:11:52,200 INFO L93 Difference]: Finished difference Result 232 states and 355 transitions. [2019-11-20 05:11:52,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:11:52,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-11-20 05:11:52,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:11:52,203 INFO L225 Difference]: With dead ends: 232 [2019-11-20 05:11:52,203 INFO L226 Difference]: Without dead ends: 130 [2019-11-20 05:11:52,204 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:52,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-11-20 05:11:52,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-11-20 05:11:52,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-20 05:11:52,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 190 transitions. [2019-11-20 05:11:52,214 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 190 transitions. Word has length 36 [2019-11-20 05:11:52,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:11:52,214 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 190 transitions. [2019-11-20 05:11:52,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:11:52,219 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 190 transitions. [2019-11-20 05:11:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-20 05:11:52,221 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:11:52,222 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:11:52,424 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:52,425 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:11:52,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:11:52,426 INFO L82 PathProgramCache]: Analyzing trace with hash 441356492, now seen corresponding path program 1 times [2019-11-20 05:11:52,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:11:52,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1160340752] [2019-11-20 05:11:52,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:11:52,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:11:52,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:11:52,558 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 05:11:52,559 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:11:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 05:11:52,568 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1160340752] [2019-11-20 05:11:52,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:11:52,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 05:11:52,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198395511] [2019-11-20 05:11:52,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:11:52,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:11:52,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:11:52,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:52,570 INFO L87 Difference]: Start difference. First operand 127 states and 190 transitions. Second operand 3 states. [2019-11-20 05:11:52,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:11:52,752 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2019-11-20 05:11:52,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:11:52,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-11-20 05:11:52,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:11:52,755 INFO L225 Difference]: With dead ends: 265 [2019-11-20 05:11:52,755 INFO L226 Difference]: Without dead ends: 148 [2019-11-20 05:11:52,756 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:52,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-11-20 05:11:52,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-11-20 05:11:52,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-20 05:11:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 212 transitions. [2019-11-20 05:11:52,769 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 212 transitions. Word has length 50 [2019-11-20 05:11:52,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:11:52,770 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 212 transitions. [2019-11-20 05:11:52,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:11:52,770 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 212 transitions. [2019-11-20 05:11:52,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-20 05:11:52,772 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:11:52,773 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:11:52,973 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:52,973 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:11:52,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:11:52,974 INFO L82 PathProgramCache]: Analyzing trace with hash -394489400, now seen corresponding path program 1 times [2019-11-20 05:11:52,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:11:52,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [534696811] [2019-11-20 05:11:52,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:11:53,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 05:11:53,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:11:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-20 05:11:53,209 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:11:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-20 05:11:53,314 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [534696811] [2019-11-20 05:11:53,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:11:53,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-11-20 05:11:53,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807669431] [2019-11-20 05:11:53,316 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 05:11:53,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:11:53,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 05:11:53,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 05:11:53,316 INFO L87 Difference]: Start difference. First operand 144 states and 212 transitions. Second operand 6 states. [2019-11-20 05:11:53,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:11:53,968 INFO L93 Difference]: Finished difference Result 513 states and 781 transitions. [2019-11-20 05:11:53,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 05:11:53,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2019-11-20 05:11:53,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:11:53,987 INFO L225 Difference]: With dead ends: 513 [2019-11-20 05:11:53,994 INFO L226 Difference]: Without dead ends: 378 [2019-11-20 05:11:53,996 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-20 05:11:53,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2019-11-20 05:11:54,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 366. [2019-11-20 05:11:54,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2019-11-20 05:11:54,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 540 transitions. [2019-11-20 05:11:54,040 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 540 transitions. Word has length 67 [2019-11-20 05:11:54,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:11:54,043 INFO L462 AbstractCegarLoop]: Abstraction has 366 states and 540 transitions. [2019-11-20 05:11:54,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 05:11:54,043 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 540 transitions. [2019-11-20 05:11:54,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-20 05:11:54,051 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:11:54,051 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:11:54,255 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:54,256 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:11:54,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:11:54,256 INFO L82 PathProgramCache]: Analyzing trace with hash 2095039562, now seen corresponding path program 1 times [2019-11-20 05:11:54,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:11:54,257 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [573176526] [2019-11-20 05:11:54,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:11:54,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:11:54,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:11:54,362 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-20 05:11:54,362 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:11:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-20 05:11:54,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [573176526] [2019-11-20 05:11:54,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:11:54,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 05:11:54,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365780786] [2019-11-20 05:11:54,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:11:54,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:11:54,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:11:54,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:54,377 INFO L87 Difference]: Start difference. First operand 366 states and 540 transitions. Second operand 3 states. [2019-11-20 05:11:54,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:11:54,416 INFO L93 Difference]: Finished difference Result 874 states and 1297 transitions. [2019-11-20 05:11:54,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:11:54,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-11-20 05:11:54,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:11:54,421 INFO L225 Difference]: With dead ends: 874 [2019-11-20 05:11:54,421 INFO L226 Difference]: Without dead ends: 521 [2019-11-20 05:11:54,423 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:54,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2019-11-20 05:11:54,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 519. [2019-11-20 05:11:54,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-11-20 05:11:54,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 768 transitions. [2019-11-20 05:11:54,460 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 768 transitions. Word has length 67 [2019-11-20 05:11:54,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:11:54,462 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 768 transitions. [2019-11-20 05:11:54,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:11:54,464 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 768 transitions. [2019-11-20 05:11:54,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-20 05:11:54,466 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:11:54,466 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:11:54,668 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:54,669 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:11:54,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:11:54,669 INFO L82 PathProgramCache]: Analyzing trace with hash -811886006, now seen corresponding path program 1 times [2019-11-20 05:11:54,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:11:54,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1269647732] [2019-11-20 05:11:54,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:11:54,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:11:54,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:11:54,814 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-20 05:11:54,815 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:11:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-20 05:11:54,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1269647732] [2019-11-20 05:11:54,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:11:54,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 05:11:54,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181320356] [2019-11-20 05:11:54,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:11:54,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:11:54,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:11:54,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:54,830 INFO L87 Difference]: Start difference. First operand 519 states and 768 transitions. Second operand 3 states. [2019-11-20 05:11:54,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:11:54,874 INFO L93 Difference]: Finished difference Result 523 states and 770 transitions. [2019-11-20 05:11:54,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:11:54,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-11-20 05:11:54,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:11:54,877 INFO L225 Difference]: With dead ends: 523 [2019-11-20 05:11:54,877 INFO L226 Difference]: Without dead ends: 366 [2019-11-20 05:11:54,877 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:54,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2019-11-20 05:11:54,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 364. [2019-11-20 05:11:54,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-11-20 05:11:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 531 transitions. [2019-11-20 05:11:54,894 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 531 transitions. Word has length 67 [2019-11-20 05:11:54,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:11:54,894 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 531 transitions. [2019-11-20 05:11:54,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:11:54,894 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 531 transitions. [2019-11-20 05:11:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-20 05:11:54,895 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:11:54,895 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:11:55,097 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:55,098 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:11:55,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:11:55,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1677642956, now seen corresponding path program 1 times [2019-11-20 05:11:55,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:11:55,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [817040515] [2019-11-20 05:11:55,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:11:55,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 05:11:55,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:11:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 05:11:55,291 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:11:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 05:11:55,355 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [817040515] [2019-11-20 05:11:55,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:11:55,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-11-20 05:11:55,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800969976] [2019-11-20 05:11:55,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 05:11:55,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:11:55,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 05:11:55,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:11:55,357 INFO L87 Difference]: Start difference. First operand 364 states and 531 transitions. Second operand 11 states. [2019-11-20 05:11:56,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:11:56,527 INFO L93 Difference]: Finished difference Result 828 states and 1231 transitions. [2019-11-20 05:11:56,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-20 05:11:56,528 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2019-11-20 05:11:56,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:11:56,532 INFO L225 Difference]: With dead ends: 828 [2019-11-20 05:11:56,533 INFO L226 Difference]: Without dead ends: 672 [2019-11-20 05:11:56,533 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2019-11-20 05:11:56,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2019-11-20 05:11:56,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 423. [2019-11-20 05:11:56,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2019-11-20 05:11:56,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 600 transitions. [2019-11-20 05:11:56,552 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 600 transitions. Word has length 67 [2019-11-20 05:11:56,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:11:56,553 INFO L462 AbstractCegarLoop]: Abstraction has 423 states and 600 transitions. [2019-11-20 05:11:56,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 05:11:56,553 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 600 transitions. [2019-11-20 05:11:56,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-20 05:11:56,554 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:11:56,554 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:11:56,757 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:56,757 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:11:56,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:11:56,758 INFO L82 PathProgramCache]: Analyzing trace with hash -602651212, now seen corresponding path program 1 times [2019-11-20 05:11:56,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:11:56,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1475236722] [2019-11-20 05:11:56,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:11:56,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:11:56,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:11:56,877 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-20 05:11:56,881 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:11:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-20 05:11:56,892 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1475236722] [2019-11-20 05:11:56,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:11:56,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 05:11:56,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317814199] [2019-11-20 05:11:56,893 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:11:56,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:11:56,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:11:56,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:56,894 INFO L87 Difference]: Start difference. First operand 423 states and 600 transitions. Second operand 3 states. [2019-11-20 05:11:57,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:11:57,064 INFO L93 Difference]: Finished difference Result 881 states and 1266 transitions. [2019-11-20 05:11:57,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:11:57,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2019-11-20 05:11:57,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:11:57,067 INFO L225 Difference]: With dead ends: 881 [2019-11-20 05:11:57,068 INFO L226 Difference]: Without dead ends: 471 [2019-11-20 05:11:57,072 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:11:57,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-11-20 05:11:57,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 465. [2019-11-20 05:11:57,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2019-11-20 05:11:57,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 652 transitions. [2019-11-20 05:11:57,091 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 652 transitions. Word has length 84 [2019-11-20 05:11:57,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:11:57,092 INFO L462 AbstractCegarLoop]: Abstraction has 465 states and 652 transitions. [2019-11-20 05:11:57,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:11:57,092 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 652 transitions. [2019-11-20 05:11:57,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-20 05:11:57,098 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:11:57,098 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:11:57,310 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:57,311 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:11:57,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:11:57,311 INFO L82 PathProgramCache]: Analyzing trace with hash -801029670, now seen corresponding path program 1 times [2019-11-20 05:11:57,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:11:57,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [142272707] [2019-11-20 05:11:57,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:11:57,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:11:57,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:11:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-20 05:11:57,456 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:11:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-20 05:11:57,482 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [142272707] [2019-11-20 05:11:57,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:11:57,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-20 05:11:57,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654901554] [2019-11-20 05:11:57,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 05:11:57,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:11:57,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:11:57,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:11:57,484 INFO L87 Difference]: Start difference. First operand 465 states and 652 transitions. Second operand 4 states. [2019-11-20 05:11:57,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:11:57,553 INFO L93 Difference]: Finished difference Result 1415 states and 1978 transitions. [2019-11-20 05:11:57,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 05:11:57,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-11-20 05:11:57,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:11:57,563 INFO L225 Difference]: With dead ends: 1415 [2019-11-20 05:11:57,563 INFO L226 Difference]: Without dead ends: 963 [2019-11-20 05:11:57,564 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:11:57,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2019-11-20 05:11:57,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 959. [2019-11-20 05:11:57,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-11-20 05:11:57,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1327 transitions. [2019-11-20 05:11:57,596 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1327 transitions. Word has length 103 [2019-11-20 05:11:57,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:11:57,597 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1327 transitions. [2019-11-20 05:11:57,597 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 05:11:57,597 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1327 transitions. [2019-11-20 05:11:57,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-20 05:11:57,599 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:11:57,599 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:11:57,801 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:57,803 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 05:11:57,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:11:57,803 INFO L82 PathProgramCache]: Analyzing trace with hash -935043176, now seen corresponding path program 1 times [2019-11-20 05:11:57,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:11:57,804 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1050117474] [2019-11-20 05:11:57,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:11:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:11:58,245 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 05:11:58,245 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 05:11:58,457 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:11:58,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:11:58 BoogieIcfgContainer [2019-11-20 05:11:58,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 05:11:58,528 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:11:58,528 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:11:58,528 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:11:58,529 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:11:51" (3/4) ... [2019-11-20 05:11:58,531 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 05:11:58,645 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_34093f82-49fe-4c85-a740-f817187eaf4b/bin/uautomizer/witness.graphml [2019-11-20 05:11:58,645 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:11:58,651 INFO L168 Benchmark]: Toolchain (without parser) took 8797.63 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 276.3 MB). Free memory was 955.0 MB in the beginning and 1.2 GB in the end (delta: -205.6 MB). Peak memory consumption was 70.7 MB. Max. memory is 11.5 GB. [2019-11-20 05:11:58,652 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:11:58,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-11-20 05:11:58,652 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:11:58,653 INFO L168 Benchmark]: Boogie Preprocessor took 34.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:11:58,653 INFO L168 Benchmark]: RCFGBuilder took 669.56 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: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 11.5 GB. [2019-11-20 05:11:58,654 INFO L168 Benchmark]: TraceAbstraction took 7445.03 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 117.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -72.3 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. [2019-11-20 05:11:58,654 INFO L168 Benchmark]: Witness Printer took 117.72 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:11:58,656 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 468.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.04 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 34.37 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 669.56 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: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7445.03 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 117.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -72.3 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. * Witness Printer took 117.72 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 614]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L623] int __retres1 ; [L9] int s__info_callback = __VERIFIER_nondet_int(); [L10] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L11] int s__state ; [L12] int s__new_session ; [L13] int s__server ; [L14] unsigned int s__version = __VERIFIER_nondet_uint(); [L15] int s__type ; [L16] int s__init_num ; [L17] int s__bbio = __VERIFIER_nondet_int(); [L18] int s__wbio = __VERIFIER_nondet_int(); [L19] int s__hit = __VERIFIER_nondet_int(); [L20] int s__rwstate ; [L21] int s__init_buf___0 ; [L22] int s__debug = __VERIFIER_nondet_int(); [L23] int s__shutdown ; [L24] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L25] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L26] unsigned int s__ctx__stats__sess_connect ; [L27] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L29] int s__s3__change_cipher_spec ; [L30] int s__s3__flags ; [L31] int s__s3__delay_buf_pop_ret ; [L32] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L33] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__next_state___0 ; [L38] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L39] int s__session__cipher ; [L40] int s__session__compress_meth ; [L41] int buf ; [L42] unsigned long tmp ; [L43] unsigned long l ; [L44] int num1 ; [L45] int cb ; [L46] int ret ; [L47] int new_state ; [L48] int state ; [L49] int skip ; [L50] int tmp___0 ; [L51] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L52] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L53] int tmp___3 = __VERIFIER_nondet_int(); [L54] int tmp___4 = __VERIFIER_nondet_int(); [L55] int tmp___5 = __VERIFIER_nondet_int(); [L56] int tmp___6 = __VERIFIER_nondet_int(); [L57] int tmp___7 = __VERIFIER_nondet_int(); [L58] int tmp___8 = __VERIFIER_nondet_int(); [L59] int tmp___9 = __VERIFIER_nondet_int(); [L60] int blastFlag ; [L61] int ag_X ; [L62] int ag_Y ; [L63] int ag_Z ; [L64] int __retres60 ; [L67] s__state = 12292 [L68] blastFlag = 0 [L69] tmp = __VERIFIER_nondet_int() [L70] cb = 0 [L71] ret = -1 [L72] skip = 0 [L73] tmp___0 = 0 [L74] COND TRUE s__info_callback != 0 [L75] cb = s__info_callback [L83] s__in_handshake = s__in_handshake + 1 [L84] COND FALSE !(tmp___1 + 12288) [L93] COND FALSE !(\read(s__hit)) [L96] ag_Z = 48 [L99] COND TRUE 1 [L101] state = s__state [L102] COND TRUE s__state == 12292 [L205] s__new_session = 1 [L206] s__state = 4096 [L207] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L212] s__server = 0 [L213] COND TRUE cb != 0 [L218] COND FALSE !(s__version + 65280 != 768) [L224] s__type = 4096 [L225] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L243] COND FALSE !(! tmp___4) [L249] COND FALSE !(! tmp___5) [L255] s__state = 4368 [L256] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L257] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND TRUE s__state == 4368 [L261] s__shutdown = 0 [L262] ret = __VERIFIER_nondet_int() [L263] COND TRUE blastFlag == 0 [L264] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] ag_X = s__state - 32 [L275] s__init_num = 0 [L276] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND TRUE s__state == 4384 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L294] COND FALSE !(ret <= 0) [L299] s__state = ag_X [L300] COND FALSE !(\read(s__hit)) [L303] s__state = s__state | ag_Z [L305] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND TRUE s__state == 4400 [L309] COND TRUE (unsigned long )s__s3__tmp__new_cipher__algorithms + 256UL [L310] skip = 1 [L324] s__state = 4416 [L325] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND TRUE s__state == 4416 [L329] ret = __VERIFIER_nondet_int() [L330] COND FALSE !(blastFlag == 3) [L335] COND FALSE !(ret <= 0) [L340] s__state = 4432 [L341] s__init_num = 0 [L342] COND FALSE !(! tmp___6) [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND FALSE !(s__state == 4416) [L138] COND FALSE !(s__state == 4417) [L141] COND TRUE s__state == 4432 [L351] ret = __VERIFIER_nondet_int() [L352] COND TRUE blastFlag <= 5 [L614] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Result: UNSAFE, OverallTime: 7.3s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1698 SDtfs, 1753 SDslu, 2509 SDs, 0 SdLazy, 1659 SolverSat, 239 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1122 GetRequests, 1091 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=959occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 282 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.6s 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...