./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/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/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/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-cad4683 [2019-10-22 09:02:33,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:33,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:33,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:33,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:33,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:33,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:33,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:33,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:33,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:33,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:33,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:33,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:33,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:33,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:33,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:33,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:33,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:33,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:33,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:33,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:33,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:33,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:33,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:33,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:33,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:33,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:33,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:33,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:33,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:33,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:33,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:33,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:33,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:33,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:33,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:33,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:33,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:33,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:33,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:33,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:33,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:02:33,739 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:33,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:33,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:33,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:33,740 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:33,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:33,741 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:33,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:33,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:33,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:33,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:33,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:33,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:33,742 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:33,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:33,742 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:33,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:33,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:33,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:33,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:33,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:33,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:33,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:33,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:33,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:33,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:33,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:33,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:33,744 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/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/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 [2019-10-22 09:02:33,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:33,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:33,806 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:33,810 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:33,810 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:33,811 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-10-22 09:02:33,871 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/data/6165ef8d4/9225b72954b24390a6bf879a27eea7e4/FLAG9620796c1 [2019-10-22 09:02:34,279 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:34,280 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-10-22 09:02:34,290 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/data/6165ef8d4/9225b72954b24390a6bf879a27eea7e4/FLAG9620796c1 [2019-10-22 09:02:34,309 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/data/6165ef8d4/9225b72954b24390a6bf879a27eea7e4 [2019-10-22 09:02:34,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:34,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:34,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:34,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:34,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:34,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f49becc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34, skipping insertion in model container [2019-10-22 09:02:34,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,331 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:34,370 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:34,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:34,620 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:34,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:34,693 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:34,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34 WrapperNode [2019-10-22 09:02:34,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:34,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:34,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:34,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:34,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:34,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:34,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:34,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:34,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... [2019-10-22 09:02:34,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:34,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:34,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:34,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:34,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/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 [2019-10-22 09:02:34,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:34,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:35,071 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-22 09:02:35,605 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2019-10-22 09:02:35,605 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2019-10-22 09:02:35,607 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:35,607 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 09:02:35,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:35 BoogieIcfgContainer [2019-10-22 09:02:35,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:35,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:35,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:35,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:35,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:34" (1/3) ... [2019-10-22 09:02:35,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcea1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:35, skipping insertion in model container [2019-10-22 09:02:35,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:34" (2/3) ... [2019-10-22 09:02:35,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcea1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:35, skipping insertion in model container [2019-10-22 09:02:35,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:35" (3/3) ... [2019-10-22 09:02:35,616 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2019-10-22 09:02:35,625 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:35,632 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:02:35,643 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:02:35,671 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:35,671 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:35,672 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:35,672 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:35,672 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:35,672 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:35,672 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:35,672 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:35,691 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-10-22 09:02:35,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 09:02:35,698 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:35,699 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:35,701 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:35,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:35,707 INFO L82 PathProgramCache]: Analyzing trace with hash 511659491, now seen corresponding path program 1 times [2019-10-22 09:02:35,716 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:35,716 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500149991] [2019-10-22 09:02:35,716 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:35,717 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:35,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:35,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500149991] [2019-10-22 09:02:35,887 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:35,888 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:35,888 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543886411] [2019-10-22 09:02:35,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:35,893 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:35,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:35,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:35,909 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-10-22 09:02:36,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:36,119 INFO L93 Difference]: Finished difference Result 246 states and 422 transitions. [2019-10-22 09:02:36,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:36,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-22 09:02:36,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:36,132 INFO L225 Difference]: With dead ends: 246 [2019-10-22 09:02:36,135 INFO L226 Difference]: Without dead ends: 112 [2019-10-22 09:02:36,139 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:36,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-10-22 09:02:36,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-10-22 09:02:36,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-10-22 09:02:36,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions. [2019-10-22 09:02:36,188 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 24 [2019-10-22 09:02:36,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:36,188 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 170 transitions. [2019-10-22 09:02:36,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:36,188 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions. [2019-10-22 09:02:36,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 09:02:36,191 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:36,192 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:36,193 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:36,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:36,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1971493731, now seen corresponding path program 1 times [2019-10-22 09:02:36,194 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:36,195 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977372490] [2019-10-22 09:02:36,195 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:36,195 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:36,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:36,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977372490] [2019-10-22 09:02:36,284 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:36,284 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:36,284 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229734314] [2019-10-22 09:02:36,286 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:36,286 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:36,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:36,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:36,287 INFO L87 Difference]: Start difference. First operand 112 states and 170 transitions. Second operand 3 states. [2019-10-22 09:02:36,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:36,446 INFO L93 Difference]: Finished difference Result 232 states and 355 transitions. [2019-10-22 09:02:36,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:36,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-22 09:02:36,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:36,448 INFO L225 Difference]: With dead ends: 232 [2019-10-22 09:02:36,448 INFO L226 Difference]: Without dead ends: 130 [2019-10-22 09:02:36,449 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:36,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-10-22 09:02:36,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-10-22 09:02:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-22 09:02:36,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 190 transitions. [2019-10-22 09:02:36,468 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 190 transitions. Word has length 36 [2019-10-22 09:02:36,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:36,468 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 190 transitions. [2019-10-22 09:02:36,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:36,468 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 190 transitions. [2019-10-22 09:02:36,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 09:02:36,469 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:36,469 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:36,470 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:36,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:36,470 INFO L82 PathProgramCache]: Analyzing trace with hash 441356492, now seen corresponding path program 1 times [2019-10-22 09:02:36,470 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:36,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953195112] [2019-10-22 09:02:36,471 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:36,471 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:36,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:36,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 09:02:36,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953195112] [2019-10-22 09:02:36,584 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:36,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:36,584 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801949149] [2019-10-22 09:02:36,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:36,585 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:36,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:36,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:36,585 INFO L87 Difference]: Start difference. First operand 127 states and 190 transitions. Second operand 3 states. [2019-10-22 09:02:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:36,704 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2019-10-22 09:02:36,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:36,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-10-22 09:02:36,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:36,706 INFO L225 Difference]: With dead ends: 265 [2019-10-22 09:02:36,707 INFO L226 Difference]: Without dead ends: 148 [2019-10-22 09:02:36,707 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:36,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-10-22 09:02:36,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-10-22 09:02:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-22 09:02:36,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 212 transitions. [2019-10-22 09:02:36,716 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 212 transitions. Word has length 50 [2019-10-22 09:02:36,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:36,717 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 212 transitions. [2019-10-22 09:02:36,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:36,717 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 212 transitions. [2019-10-22 09:02:36,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-22 09:02:36,718 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:36,719 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:36,719 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:36,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:36,719 INFO L82 PathProgramCache]: Analyzing trace with hash -394489400, now seen corresponding path program 1 times [2019-10-22 09:02:36,719 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:36,720 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687131439] [2019-10-22 09:02:36,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:36,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:36,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:36,892 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:36,892 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:02:36,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:02:36 BoogieIcfgContainer [2019-10-22 09:02:36,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:02:36,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:36,953 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:36,954 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:36,954 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:35" (3/4) ... [2019-10-22 09:02:36,959 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:02:36,960 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:36,962 INFO L168 Benchmark]: Toolchain (without parser) took 2648.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 944.5 MB in the beginning and 988.7 MB in the end (delta: -44.2 MB). Peak memory consumption was 128.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:36,963 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:36,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -219.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:36,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:36,965 INFO L168 Benchmark]: Boogie Preprocessor took 57.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:36,966 INFO L168 Benchmark]: RCFGBuilder took 780.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 54.0 MB). Peak memory consumption was 54.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:36,966 INFO L168 Benchmark]: TraceAbstraction took 1343.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 988.7 MB in the end (delta: 113.5 MB). Peak memory consumption was 113.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:36,967 INFO L168 Benchmark]: Witness Printer took 6.67 ms. Allocated memory is still 1.2 GB. Free memory is still 988.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:36,969 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 380.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.0 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -219.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 75.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 57.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 780.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 54.0 MB). Peak memory consumption was 54.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1343.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 988.7 MB in the end (delta: 113.5 MB). Peak memory consumption was 113.5 MB. Max. memory is 11.5 GB. * Witness Printer took 6.67 ms. Allocated memory is still 1.2 GB. Free memory is still 988.7 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: 1.2s, 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 6451 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 19/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 09:02:38,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:38,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:38,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:38,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:38,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:38,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:38,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:38,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:38,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:38,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:38,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:38,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:38,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:38,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:38,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:38,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:38,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:38,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:38,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:39,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:39,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:39,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:39,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:39,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:39,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:39,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:39,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:39,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:39,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:39,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:39,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:39,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:39,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:39,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:39,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:39,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:39,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:39,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:39,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:39,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:39,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-10-22 09:02:39,025 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:39,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:39,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:39,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:39,027 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:39,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:39,027 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:39,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:39,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:39,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:39,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:39,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:39,028 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 09:02:39,028 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 09:02:39,028 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:39,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:39,028 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:39,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:39,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:39,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:39,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:39,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:39,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:39,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:39,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:39,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:39,032 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-10-22 09:02:39,032 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 09:02:39,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:39,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 09:02:39,032 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/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 [2019-10-22 09:02:39,071 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:39,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:39,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:39,086 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:39,087 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:39,087 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-10-22 09:02:39,140 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/data/63174c940/48bc723b23964040a6d79cce2a48c49d/FLAG26a94efee [2019-10-22 09:02:39,549 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:39,551 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-10-22 09:02:39,563 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/data/63174c940/48bc723b23964040a6d79cce2a48c49d/FLAG26a94efee [2019-10-22 09:02:39,932 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/data/63174c940/48bc723b23964040a6d79cce2a48c49d [2019-10-22 09:02:39,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:39,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:39,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:39,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:39,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:39,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:39" (1/1) ... [2019-10-22 09:02:39,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1ad20a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:39, skipping insertion in model container [2019-10-22 09:02:39,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:39" (1/1) ... [2019-10-22 09:02:39,955 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:39,996 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:40,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:40,254 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:40,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:40,419 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:40,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:40 WrapperNode [2019-10-22 09:02:40,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:40,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:40,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:40,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:40,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:40" (1/1) ... [2019-10-22 09:02:40,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:40" (1/1) ... [2019-10-22 09:02:40,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:40,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:40,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:40,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:40,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:40" (1/1) ... [2019-10-22 09:02:40,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:40" (1/1) ... [2019-10-22 09:02:40,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:40" (1/1) ... [2019-10-22 09:02:40,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:40" (1/1) ... [2019-10-22 09:02:40,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:40" (1/1) ... [2019-10-22 09:02:40,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:40" (1/1) ... [2019-10-22 09:02:40,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:40" (1/1) ... [2019-10-22 09:02:40,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:40,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:40,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:40,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:40,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/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 [2019-10-22 09:02:40,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:40,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:40,662 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-22 09:02:41,114 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2019-10-22 09:02:41,114 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2019-10-22 09:02:41,116 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:41,116 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 09:02:41,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:41 BoogieIcfgContainer [2019-10-22 09:02:41,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:41,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:41,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:41,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:41,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:39" (1/3) ... [2019-10-22 09:02:41,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb7b7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:41, skipping insertion in model container [2019-10-22 09:02:41,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:40" (2/3) ... [2019-10-22 09:02:41,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb7b7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:41, skipping insertion in model container [2019-10-22 09:02:41,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:41" (3/3) ... [2019-10-22 09:02:41,125 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2019-10-22 09:02:41,134 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:41,142 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:02:41,150 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:02:41,171 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:41,172 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:41,172 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:41,172 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:41,172 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:41,172 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:41,172 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:41,172 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:41,189 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-10-22 09:02:41,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 09:02:41,196 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:41,197 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:41,199 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:41,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:41,205 INFO L82 PathProgramCache]: Analyzing trace with hash 511659491, now seen corresponding path program 1 times [2019-10-22 09:02:41,215 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:02:41,215 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [959469943] [2019-10-22 09:02:41,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/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 [2019-10-22 09:02:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:41,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:41,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:41,401 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:02:41,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:41,416 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [959469943] [2019-10-22 09:02:41,417 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:41,417 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 09:02:41,418 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557250375] [2019-10-22 09:02:41,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:41,423 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:02:41,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:41,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:41,439 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-10-22 09:02:41,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:41,661 INFO L93 Difference]: Finished difference Result 246 states and 422 transitions. [2019-10-22 09:02:41,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:41,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-22 09:02:41,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:41,674 INFO L225 Difference]: With dead ends: 246 [2019-10-22 09:02:41,675 INFO L226 Difference]: Without dead ends: 112 [2019-10-22 09:02:41,678 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:41,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-10-22 09:02:41,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-10-22 09:02:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-10-22 09:02:41,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions. [2019-10-22 09:02:41,717 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 24 [2019-10-22 09:02:41,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:41,718 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 170 transitions. [2019-10-22 09:02:41,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:41,718 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions. [2019-10-22 09:02:41,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 09:02:41,722 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:41,722 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:41,923 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:41,923 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:41,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:41,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1971493731, now seen corresponding path program 1 times [2019-10-22 09:02:41,924 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:02:41,925 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [53842539] [2019-10-22 09:02:41,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/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 [2019-10-22 09:02:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:42,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:42,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:42,018 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:02:42,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:42,024 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [53842539] [2019-10-22 09:02:42,024 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:42,024 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 09:02:42,024 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894147112] [2019-10-22 09:02:42,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:42,026 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:02:42,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:42,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:42,027 INFO L87 Difference]: Start difference. First operand 112 states and 170 transitions. Second operand 3 states. [2019-10-22 09:02:42,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:42,203 INFO L93 Difference]: Finished difference Result 232 states and 355 transitions. [2019-10-22 09:02:42,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:42,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-22 09:02:42,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:42,205 INFO L225 Difference]: With dead ends: 232 [2019-10-22 09:02:42,206 INFO L226 Difference]: Without dead ends: 130 [2019-10-22 09:02:42,207 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:42,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-10-22 09:02:42,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-10-22 09:02:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-22 09:02:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 190 transitions. [2019-10-22 09:02:42,224 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 190 transitions. Word has length 36 [2019-10-22 09:02:42,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:42,224 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 190 transitions. [2019-10-22 09:02:42,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:42,224 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 190 transitions. [2019-10-22 09:02:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 09:02:42,225 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:42,226 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:42,426 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:42,426 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:42,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:42,427 INFO L82 PathProgramCache]: Analyzing trace with hash 441356492, now seen corresponding path program 1 times [2019-10-22 09:02:42,427 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:02:42,428 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [391361432] [2019-10-22 09:02:42,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/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 [2019-10-22 09:02:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:42,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:42,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:42,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 09:02:42,532 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:02:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 09:02:42,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [391361432] [2019-10-22 09:02:42,541 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:42,541 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 09:02:42,542 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637432092] [2019-10-22 09:02:42,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:42,544 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:02:42,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:42,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:42,544 INFO L87 Difference]: Start difference. First operand 127 states and 190 transitions. Second operand 3 states. [2019-10-22 09:02:42,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:42,701 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2019-10-22 09:02:42,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:42,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-10-22 09:02:42,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:42,704 INFO L225 Difference]: With dead ends: 265 [2019-10-22 09:02:42,704 INFO L226 Difference]: Without dead ends: 148 [2019-10-22 09:02:42,704 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-10-22 09:02:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-10-22 09:02:42,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-22 09:02:42,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 212 transitions. [2019-10-22 09:02:42,716 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 212 transitions. Word has length 50 [2019-10-22 09:02:42,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:42,717 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 212 transitions. [2019-10-22 09:02:42,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:42,717 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 212 transitions. [2019-10-22 09:02:42,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-22 09:02:42,719 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:42,719 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:42,919 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:42,920 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:42,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:42,920 INFO L82 PathProgramCache]: Analyzing trace with hash -394489400, now seen corresponding path program 1 times [2019-10-22 09:02:42,920 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:02:42,921 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [945865153] [2019-10-22 09:02:42,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/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 [2019-10-22 09:02:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:43,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 09:02:43,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 09:02:43,167 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:02:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 09:02:43,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [945865153] [2019-10-22 09:02:43,276 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:43,276 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-10-22 09:02:43,277 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143102106] [2019-10-22 09:02:43,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:02:43,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:02:43,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:02:43,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:43,280 INFO L87 Difference]: Start difference. First operand 144 states and 212 transitions. Second operand 6 states. [2019-10-22 09:02:43,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:43,787 INFO L93 Difference]: Finished difference Result 513 states and 781 transitions. [2019-10-22 09:02:43,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:02:43,788 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2019-10-22 09:02:43,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:43,790 INFO L225 Difference]: With dead ends: 513 [2019-10-22 09:02:43,790 INFO L226 Difference]: Without dead ends: 378 [2019-10-22 09:02:43,791 INFO L600 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 [2019-10-22 09:02:43,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2019-10-22 09:02:43,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 366. [2019-10-22 09:02:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2019-10-22 09:02:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 540 transitions. [2019-10-22 09:02:43,839 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 540 transitions. Word has length 67 [2019-10-22 09:02:43,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:43,839 INFO L462 AbstractCegarLoop]: Abstraction has 366 states and 540 transitions. [2019-10-22 09:02:43,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:02:43,839 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 540 transitions. [2019-10-22 09:02:43,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-22 09:02:43,841 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:43,841 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:44,046 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:44,046 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:44,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:44,047 INFO L82 PathProgramCache]: Analyzing trace with hash 2095039562, now seen corresponding path program 1 times [2019-10-22 09:02:44,047 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:02:44,047 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1138398712] [2019-10-22 09:02:44,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/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 [2019-10-22 09:02:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:44,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:44,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 09:02:44,167 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:02:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 09:02:44,187 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1138398712] [2019-10-22 09:02:44,188 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:44,188 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 09:02:44,188 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628837011] [2019-10-22 09:02:44,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:44,189 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:02:44,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:44,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:44,189 INFO L87 Difference]: Start difference. First operand 366 states and 540 transitions. Second operand 3 states. [2019-10-22 09:02:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:44,230 INFO L93 Difference]: Finished difference Result 874 states and 1297 transitions. [2019-10-22 09:02:44,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:44,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-10-22 09:02:44,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:44,234 INFO L225 Difference]: With dead ends: 874 [2019-10-22 09:02:44,234 INFO L226 Difference]: Without dead ends: 521 [2019-10-22 09:02:44,235 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:44,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2019-10-22 09:02:44,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 519. [2019-10-22 09:02:44,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-10-22 09:02:44,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 768 transitions. [2019-10-22 09:02:44,268 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 768 transitions. Word has length 67 [2019-10-22 09:02:44,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:44,268 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 768 transitions. [2019-10-22 09:02:44,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:44,270 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 768 transitions. [2019-10-22 09:02:44,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-22 09:02:44,272 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:44,272 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:44,476 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:44,476 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:44,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:44,476 INFO L82 PathProgramCache]: Analyzing trace with hash -811886006, now seen corresponding path program 1 times [2019-10-22 09:02:44,477 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:02:44,477 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [108004951] [2019-10-22 09:02:44,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/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 [2019-10-22 09:02:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:44,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:44,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 09:02:44,571 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:02:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 09:02:44,578 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [108004951] [2019-10-22 09:02:44,578 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:44,578 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 09:02:44,578 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384567821] [2019-10-22 09:02:44,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:44,579 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:02:44,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:44,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:44,579 INFO L87 Difference]: Start difference. First operand 519 states and 768 transitions. Second operand 3 states. [2019-10-22 09:02:44,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:44,614 INFO L93 Difference]: Finished difference Result 523 states and 770 transitions. [2019-10-22 09:02:44,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:44,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-10-22 09:02:44,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:44,617 INFO L225 Difference]: With dead ends: 523 [2019-10-22 09:02:44,617 INFO L226 Difference]: Without dead ends: 366 [2019-10-22 09:02:44,618 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:44,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2019-10-22 09:02:44,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 364. [2019-10-22 09:02:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-10-22 09:02:44,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 531 transitions. [2019-10-22 09:02:44,631 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 531 transitions. Word has length 67 [2019-10-22 09:02:44,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:44,632 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 531 transitions. [2019-10-22 09:02:44,632 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:44,632 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 531 transitions. [2019-10-22 09:02:44,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-22 09:02:44,634 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:44,635 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:44,835 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:44,835 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:44,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:44,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1677642956, now seen corresponding path program 1 times [2019-10-22 09:02:44,836 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:02:44,836 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [982455696] [2019-10-22 09:02:44,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/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 [2019-10-22 09:02:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:44,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 09:02:44,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 09:02:44,986 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:02:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 09:02:45,036 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [982455696] [2019-10-22 09:02:45,036 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:45,036 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-10-22 09:02:45,036 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405346584] [2019-10-22 09:02:45,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 09:02:45,037 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:02:45,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 09:02:45,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:02:45,038 INFO L87 Difference]: Start difference. First operand 364 states and 531 transitions. Second operand 11 states. [2019-10-22 09:02:45,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:45,957 INFO L93 Difference]: Finished difference Result 828 states and 1231 transitions. [2019-10-22 09:02:45,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 09:02:45,958 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2019-10-22 09:02:45,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:45,960 INFO L225 Difference]: With dead ends: 828 [2019-10-22 09:02:45,960 INFO L226 Difference]: Without dead ends: 672 [2019-10-22 09:02:45,961 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2019-10-22 09:02:45,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2019-10-22 09:02:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 423. [2019-10-22 09:02:45,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2019-10-22 09:02:45,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 600 transitions. [2019-10-22 09:02:45,976 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 600 transitions. Word has length 67 [2019-10-22 09:02:45,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:45,977 INFO L462 AbstractCegarLoop]: Abstraction has 423 states and 600 transitions. [2019-10-22 09:02:45,977 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 09:02:45,977 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 600 transitions. [2019-10-22 09:02:45,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-22 09:02:45,978 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:45,978 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:46,179 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:46,179 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:46,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:46,180 INFO L82 PathProgramCache]: Analyzing trace with hash -602651212, now seen corresponding path program 1 times [2019-10-22 09:02:46,180 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:02:46,180 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1721276939] [2019-10-22 09:02:46,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/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 [2019-10-22 09:02:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:46,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:46,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-22 09:02:46,287 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:02:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-22 09:02:46,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1721276939] [2019-10-22 09:02:46,293 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:46,295 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 09:02:46,295 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376939260] [2019-10-22 09:02:46,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:46,296 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:02:46,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:46,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:46,296 INFO L87 Difference]: Start difference. First operand 423 states and 600 transitions. Second operand 3 states. [2019-10-22 09:02:46,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:46,428 INFO L93 Difference]: Finished difference Result 881 states and 1266 transitions. [2019-10-22 09:02:46,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:46,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2019-10-22 09:02:46,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:46,431 INFO L225 Difference]: With dead ends: 881 [2019-10-22 09:02:46,431 INFO L226 Difference]: Without dead ends: 471 [2019-10-22 09:02:46,432 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:46,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-10-22 09:02:46,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 465. [2019-10-22 09:02:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2019-10-22 09:02:46,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 652 transitions. [2019-10-22 09:02:46,450 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 652 transitions. Word has length 84 [2019-10-22 09:02:46,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:46,450 INFO L462 AbstractCegarLoop]: Abstraction has 465 states and 652 transitions. [2019-10-22 09:02:46,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:46,451 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 652 transitions. [2019-10-22 09:02:46,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-22 09:02:46,454 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:46,454 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:46,655 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:46,656 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:46,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:46,656 INFO L82 PathProgramCache]: Analyzing trace with hash -801029670, now seen corresponding path program 1 times [2019-10-22 09:02:46,656 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:02:46,656 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [329411907] [2019-10-22 09:02:46,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/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 [2019-10-22 09:02:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:46,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:46,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-22 09:02:46,772 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:02:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-22 09:02:46,804 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [329411907] [2019-10-22 09:02:46,804 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:46,804 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-22 09:02:46,804 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994366658] [2019-10-22 09:02:46,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:02:46,805 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:02:46,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:46,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:46,805 INFO L87 Difference]: Start difference. First operand 465 states and 652 transitions. Second operand 4 states. [2019-10-22 09:02:46,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:46,867 INFO L93 Difference]: Finished difference Result 1415 states and 1978 transitions. [2019-10-22 09:02:46,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:02:46,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-10-22 09:02:46,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:46,877 INFO L225 Difference]: With dead ends: 1415 [2019-10-22 09:02:46,879 INFO L226 Difference]: Without dead ends: 963 [2019-10-22 09:02:46,879 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:46,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2019-10-22 09:02:46,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 959. [2019-10-22 09:02:46,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-10-22 09:02:46,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1327 transitions. [2019-10-22 09:02:46,904 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1327 transitions. Word has length 103 [2019-10-22 09:02:46,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:46,905 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1327 transitions. [2019-10-22 09:02:46,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:02:46,905 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1327 transitions. [2019-10-22 09:02:46,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-22 09:02:46,906 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:46,906 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:47,107 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:47,107 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:47,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:47,107 INFO L82 PathProgramCache]: Analyzing trace with hash -935043176, now seen corresponding path program 1 times [2019-10-22 09:02:47,108 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:02:47,108 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1470194079] [2019-10-22 09:02:47,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/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 [2019-10-22 09:02:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:47,552 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-10-22 09:02:47,552 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:02:47,753 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:47,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:02:47 BoogieIcfgContainer [2019-10-22 09:02:47,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:02:47,814 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:47,814 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:47,814 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:47,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:41" (3/4) ... [2019-10-22 09:02:47,816 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 09:02:47,917 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e8eaeca1-32c8-4bd3-aba0-54263aa783ce/bin/uautomizer/witness.graphml [2019-10-22 09:02:47,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:47,919 INFO L168 Benchmark]: Toolchain (without parser) took 7982.30 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 282.1 MB). Free memory was 945.6 MB in the beginning and 1.2 GB in the end (delta: -243.2 MB). Peak memory consumption was 38.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:47,919 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:47,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -198.3 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:47,920 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:47,920 INFO L168 Benchmark]: Boogie Preprocessor took 31.26 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:47,920 INFO L168 Benchmark]: RCFGBuilder took 606.88 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: 51.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:47,920 INFO L168 Benchmark]: TraceAbstraction took 6695.01 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 133.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -120.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:47,920 INFO L168 Benchmark]: Witness Printer took 103.41 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: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:47,924 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 481.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -198.3 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.50 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 31.26 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 606.88 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: 51.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6695.01 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 133.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -120.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * Witness Printer took 103.41 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: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 614]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L623] int __retres1 ; [L9] int s__info_callback = __VERIFIER_nondet_int(); [L10] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L11] int s__state ; [L12] int s__new_session ; [L13] int s__server ; [L14] unsigned int s__version = __VERIFIER_nondet_uint(); [L15] int s__type ; [L16] int s__init_num ; [L17] int s__bbio = __VERIFIER_nondet_int(); [L18] int s__wbio = __VERIFIER_nondet_int(); [L19] int s__hit = __VERIFIER_nondet_int(); [L20] int s__rwstate ; [L21] int s__init_buf___0 ; [L22] int s__debug = __VERIFIER_nondet_int(); [L23] int s__shutdown ; [L24] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L25] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L26] unsigned int s__ctx__stats__sess_connect ; [L27] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L29] int s__s3__change_cipher_spec ; [L30] int s__s3__flags ; [L31] int s__s3__delay_buf_pop_ret ; [L32] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L33] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__next_state___0 ; [L38] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L39] int s__session__cipher ; [L40] int s__session__compress_meth ; [L41] int buf ; [L42] unsigned long tmp ; [L43] unsigned long l ; [L44] int num1 ; [L45] int cb ; [L46] int ret ; [L47] int new_state ; [L48] int state ; [L49] int skip ; [L50] int tmp___0 ; [L51] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L52] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L53] int tmp___3 = __VERIFIER_nondet_int(); [L54] int tmp___4 = __VERIFIER_nondet_int(); [L55] int tmp___5 = __VERIFIER_nondet_int(); [L56] int tmp___6 = __VERIFIER_nondet_int(); [L57] int tmp___7 = __VERIFIER_nondet_int(); [L58] int tmp___8 = __VERIFIER_nondet_int(); [L59] int tmp___9 = __VERIFIER_nondet_int(); [L60] int blastFlag ; [L61] int ag_X ; [L62] int ag_Y ; [L63] int ag_Z ; [L64] int __retres60 ; [L67] s__state = 12292 [L68] blastFlag = 0 [L69] tmp = __VERIFIER_nondet_int() [L70] cb = 0 [L71] ret = -1 [L72] skip = 0 [L73] tmp___0 = 0 [L74] COND TRUE s__info_callback != 0 [L75] cb = s__info_callback [L83] s__in_handshake = s__in_handshake + 1 [L84] COND FALSE !(tmp___1 + 12288) [L93] COND FALSE !(\read(s__hit)) [L96] ag_Z = 48 [L99] COND TRUE 1 [L101] state = s__state [L102] COND TRUE s__state == 12292 [L205] s__new_session = 1 [L206] s__state = 4096 [L207] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L212] s__server = 0 [L213] COND TRUE cb != 0 [L218] COND FALSE !(s__version + 65280 != 768) [L224] s__type = 4096 [L225] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L243] COND FALSE !(! tmp___4) [L249] COND FALSE !(! tmp___5) [L255] s__state = 4368 [L256] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L257] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND TRUE s__state == 4368 [L261] s__shutdown = 0 [L262] ret = __VERIFIER_nondet_int() [L263] COND TRUE blastFlag == 0 [L264] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] ag_X = s__state - 32 [L275] s__init_num = 0 [L276] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND TRUE s__state == 4384 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L294] COND FALSE !(ret <= 0) [L299] s__state = ag_X [L300] COND FALSE !(\read(s__hit)) [L303] s__state = s__state | ag_Z [L305] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND TRUE s__state == 4400 [L309] COND TRUE (unsigned long )s__s3__tmp__new_cipher__algorithms + 256UL [L310] skip = 1 [L324] s__state = 4416 [L325] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND TRUE s__state == 4416 [L329] ret = __VERIFIER_nondet_int() [L330] COND FALSE !(blastFlag == 3) [L335] COND FALSE !(ret <= 0) [L340] s__state = 4432 [L341] s__init_num = 0 [L342] COND FALSE !(! tmp___6) [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND FALSE !(s__state == 4416) [L138] COND FALSE !(s__state == 4417) [L141] COND TRUE s__state == 4432 [L351] ret = __VERIFIER_nondet_int() [L352] COND TRUE blastFlag <= 5 [L614] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Result: UNSAFE, OverallTime: 6.6s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1698 SDtfs, 1753 SDslu, 2509 SDs, 0 SdLazy, 1659 SolverSat, 239 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s 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...