./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/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a482892abf67e79a3ae4664db384c404b0bcc555 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/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 [2019-11-15 21:13:48,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:13:48,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:13:48,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:13:48,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:13:48,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:13:48,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:13:48,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:13:48,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:13:48,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:13:48,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:13:48,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:13:48,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:13:48,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:13:48,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:13:48,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:13:48,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:13:48,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:13:48,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:13:48,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:13:48,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:13:48,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:13:48,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:13:48,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:13:48,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:13:48,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:13:48,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:13:48,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:13:48,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:13:48,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:13:48,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:13:48,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:13:48,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:13:48,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:13:48,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:13:48,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:13:48,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:13:48,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:13:48,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:13:48,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:13:48,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:13:48,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 21:13:48,607 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:13:48,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:13:48,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:13:48,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:13:48,619 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:13:48,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:13:48,619 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:13:48,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:13:48,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:13:48,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:13:48,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:13:48,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:13:48,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:13:48,621 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:13:48,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:13:48,621 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:13:48,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:13:48,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:13:48,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:13:48,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:13:48,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:13:48,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:13:48,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:13:48,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:13:48,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:13:48,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:13:48,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:13:48,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:13:48,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a482892abf67e79a3ae4664db384c404b0bcc555 [2019-11-15 21:13:48,648 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:13:48,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:13:48,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:13:48,661 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:13:48,661 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:13:48,662 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-11-15 21:13:48,712 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/data/bcb5090da/a418772148184fd7b3cb8343a16c74ed/FLAG35e1d8722 [2019-11-15 21:13:49,164 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:13:49,165 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-11-15 21:13:49,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/data/bcb5090da/a418772148184fd7b3cb8343a16c74ed/FLAG35e1d8722 [2019-11-15 21:13:49,682 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/data/bcb5090da/a418772148184fd7b3cb8343a16c74ed [2019-11-15 21:13:49,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:13:49,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:13:49,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:13:49,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:13:49,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:13:49,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:13:49" (1/1) ... [2019-11-15 21:13:49,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6bbafd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:49, skipping insertion in model container [2019-11-15 21:13:49,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:13:49" (1/1) ... [2019-11-15 21:13:49,701 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:13:49,756 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:13:50,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:13:50,097 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:13:50,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:13:50,163 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:13:50,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:50 WrapperNode [2019-11-15 21:13:50,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:13:50,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:13:50,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:13:50,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:13:50,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:50" (1/1) ... [2019-11-15 21:13:50,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:50" (1/1) ... [2019-11-15 21:13:50,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:13:50,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:13:50,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:13:50,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:13:50,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:50" (1/1) ... [2019-11-15 21:13:50,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:50" (1/1) ... [2019-11-15 21:13:50,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:50" (1/1) ... [2019-11-15 21:13:50,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:50" (1/1) ... [2019-11-15 21:13:50,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:50" (1/1) ... [2019-11-15 21:13:50,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:50" (1/1) ... [2019-11-15 21:13:50,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:50" (1/1) ... [2019-11-15 21:13:50,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:13:50,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:13:50,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:13:50,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:13:50,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:13:50,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:13:50,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:13:50,551 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-15 21:13:51,122 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2019-11-15 21:13:51,123 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2019-11-15 21:13:51,124 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:13:51,124 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 21:13:51,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:13:51 BoogieIcfgContainer [2019-11-15 21:13:51,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:13:51,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:13:51,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:13:51,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:13:51,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:13:49" (1/3) ... [2019-11-15 21:13:51,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b8dd84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:13:51, skipping insertion in model container [2019-11-15 21:13:51,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:50" (2/3) ... [2019-11-15 21:13:51,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b8dd84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:13:51, skipping insertion in model container [2019-11-15 21:13:51,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:13:51" (3/3) ... [2019-11-15 21:13:51,131 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2019-11-15 21:13:51,138 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:13:51,144 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 21:13:51,154 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 21:13:51,175 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:13:51,175 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:13:51,175 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:13:51,176 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:13:51,176 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:13:51,176 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:13:51,176 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:13:51,176 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:13:51,193 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-11-15 21:13:51,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 21:13:51,199 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:13:51,200 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] [2019-11-15 21:13:51,201 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:13:51,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:13:51,206 INFO L82 PathProgramCache]: Analyzing trace with hash 511659491, now seen corresponding path program 1 times [2019-11-15 21:13:51,211 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:13:51,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621638902] [2019-11-15 21:13:51,212 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:13:51,212 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:13:51,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:13:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:13:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:13:51,387 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621638902] [2019-11-15 21:13:51,388 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:13:51,389 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 21:13:51,389 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330126240] [2019-11-15 21:13:51,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 21:13:51,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:13:51,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:13:51,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:13:51,408 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-11-15 21:13:51,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:13:51,610 INFO L93 Difference]: Finished difference Result 246 states and 422 transitions. [2019-11-15 21:13:51,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:13:51,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-15 21:13:51,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:13:51,623 INFO L225 Difference]: With dead ends: 246 [2019-11-15 21:13:51,623 INFO L226 Difference]: Without dead ends: 112 [2019-11-15 21:13:51,627 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 [2019-11-15 21:13:51,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-15 21:13:51,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-11-15 21:13:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-15 21:13:51,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions. [2019-11-15 21:13:51,667 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 24 [2019-11-15 21:13:51,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:13:51,668 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 170 transitions. [2019-11-15 21:13:51,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 21:13:51,668 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions. [2019-11-15 21:13:51,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-15 21:13:51,670 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:13:51,670 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] [2019-11-15 21:13:51,670 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:13:51,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:13:51,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1971493731, now seen corresponding path program 1 times [2019-11-15 21:13:51,671 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:13:51,671 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333839957] [2019-11-15 21:13:51,671 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:13:51,671 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:13:51,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:13:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:13:51,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:13:51,734 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333839957] [2019-11-15 21:13:51,734 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:13:51,734 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:13:51,734 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171900044] [2019-11-15 21:13:51,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 21:13:51,736 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:13:51,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:13:51,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:13:51,737 INFO L87 Difference]: Start difference. First operand 112 states and 170 transitions. Second operand 3 states. [2019-11-15 21:13:51,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:13:51,888 INFO L93 Difference]: Finished difference Result 232 states and 355 transitions. [2019-11-15 21:13:51,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:13:51,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-11-15 21:13:51,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:13:51,891 INFO L225 Difference]: With dead ends: 232 [2019-11-15 21:13:51,891 INFO L226 Difference]: Without dead ends: 130 [2019-11-15 21:13:51,892 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 [2019-11-15 21:13:51,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-11-15 21:13:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-11-15 21:13:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-15 21:13:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 190 transitions. [2019-11-15 21:13:51,903 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 190 transitions. Word has length 36 [2019-11-15 21:13:51,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:13:51,903 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 190 transitions. [2019-11-15 21:13:51,903 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 21:13:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 190 transitions. [2019-11-15 21:13:51,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-15 21:13:51,905 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:13:51,905 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] [2019-11-15 21:13:51,905 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:13:51,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:13:51,906 INFO L82 PathProgramCache]: Analyzing trace with hash 441356492, now seen corresponding path program 1 times [2019-11-15 21:13:51,906 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:13:51,906 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738770096] [2019-11-15 21:13:51,906 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:13:51,907 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:13:51,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:13:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:13:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 21:13:51,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738770096] [2019-11-15 21:13:51,972 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:13:51,973 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 21:13:51,973 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229727589] [2019-11-15 21:13:51,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 21:13:51,974 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:13:51,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:13:51,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:13:51,974 INFO L87 Difference]: Start difference. First operand 127 states and 190 transitions. Second operand 3 states. [2019-11-15 21:13:52,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:13:52,161 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2019-11-15 21:13:52,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:13:52,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-11-15 21:13:52,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:13:52,163 INFO L225 Difference]: With dead ends: 265 [2019-11-15 21:13:52,163 INFO L226 Difference]: Without dead ends: 148 [2019-11-15 21:13:52,165 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 [2019-11-15 21:13:52,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-11-15 21:13:52,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-11-15 21:13:52,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-15 21:13:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 212 transitions. [2019-11-15 21:13:52,183 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 212 transitions. Word has length 50 [2019-11-15 21:13:52,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:13:52,184 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 212 transitions. [2019-11-15 21:13:52,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 21:13:52,184 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 212 transitions. [2019-11-15 21:13:52,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-15 21:13:52,193 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:13:52,193 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] [2019-11-15 21:13:52,194 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:13:52,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:13:52,194 INFO L82 PathProgramCache]: Analyzing trace with hash -394489400, now seen corresponding path program 1 times [2019-11-15 21:13:52,194 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:13:52,195 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787793719] [2019-11-15 21:13:52,195 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:13:52,195 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:13:52,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:13:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:13:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:13:52,399 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:13:52,400 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 21:13:52,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:13:52 BoogieIcfgContainer [2019-11-15 21:13:52,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:13:52,473 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:13:52,473 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:13:52,473 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:13:52,474 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:13:51" (3/4) ... [2019-11-15 21:13:52,478 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 21:13:52,478 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:13:52,481 INFO L168 Benchmark]: Toolchain (without parser) took 2793.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 944.7 MB in the beginning and 916.3 MB in the end (delta: 28.4 MB). Peak memory consumption was 129.1 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:52,482 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:13:52,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -145.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:52,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:13:52,485 INFO L168 Benchmark]: Boogie Preprocessor took 39.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:52,485 INFO L168 Benchmark]: RCFGBuilder took 858.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:52,487 INFO L168 Benchmark]: TraceAbstraction took 1346.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 916.3 MB in the end (delta: 119.1 MB). Peak memory consumption was 119.1 MB. Max. memory is 11.5 GB. [2019-11-15 21:13:52,491 INFO L168 Benchmark]: Witness Printer took 5.52 ms. Allocated memory is still 1.1 GB. Free memory is still 916.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:13:52,496 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 479.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -145.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 858.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1346.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 916.3 MB in the end (delta: 119.1 MB). Peak memory consumption was 119.1 MB. Max. memory is 11.5 GB. * Witness Printer took 5.52 ms. Allocated memory is still 1.1 GB. Free memory is still 916.3 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, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 6451 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 19/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-15 21:13:54,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:13:54,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:13:54,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:13:54,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:13:54,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:13:54,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:13:54,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:13:54,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:13:54,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:13:54,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:13:54,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:13:54,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:13:54,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:13:54,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:13:54,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:13:54,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:13:54,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:13:54,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:13:54,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:13:54,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:13:54,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:13:54,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:13:54,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:13:54,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:13:54,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:13:54,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:13:54,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:13:54,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:13:54,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:13:54,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:13:54,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:13:54,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:13:54,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:13:54,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:13:54,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:13:54,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:13:54,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:13:54,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:13:54,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:13:54,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:13:54,728 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 21:13:54,753 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:13:54,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:13:54,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:13:54,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:13:54,755 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:13:54,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:13:54,755 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:13:54,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:13:54,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:13:54,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:13:54,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:13:54,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:13:54,757 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 21:13:54,757 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 21:13:54,757 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:13:54,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:13:54,757 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:13:54,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:13:54,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:13:54,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:13:54,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:13:54,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:13:54,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:13:54,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:13:54,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:13:54,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:13:54,760 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 21:13:54,760 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 21:13:54,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:13:54,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 21:13:54,760 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a482892abf67e79a3ae4664db384c404b0bcc555 [2019-11-15 21:13:54,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:13:54,798 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:13:54,801 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:13:54,803 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:13:54,803 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:13:54,804 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-11-15 21:13:54,860 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/data/ecd7f5e7d/87327034297b49e78dc2f6238c40524f/FLAGb1a57c3f4 [2019-11-15 21:13:55,301 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:13:55,301 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2019-11-15 21:13:55,311 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/data/ecd7f5e7d/87327034297b49e78dc2f6238c40524f/FLAGb1a57c3f4 [2019-11-15 21:13:55,697 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/data/ecd7f5e7d/87327034297b49e78dc2f6238c40524f [2019-11-15 21:13:55,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:13:55,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:13:55,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:13:55,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:13:55,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:13:55,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:13:55" (1/1) ... [2019-11-15 21:13:55,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@543d201a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:55, skipping insertion in model container [2019-11-15 21:13:55,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:13:55" (1/1) ... [2019-11-15 21:13:55,715 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:13:55,776 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:13:56,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:13:56,071 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:13:56,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:13:56,200 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:13:56,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:56 WrapperNode [2019-11-15 21:13:56,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:13:56,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:13:56,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:13:56,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:13:56,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:56" (1/1) ... [2019-11-15 21:13:56,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:56" (1/1) ... [2019-11-15 21:13:56,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:13:56,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:13:56,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:13:56,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:13:56,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:56" (1/1) ... [2019-11-15 21:13:56,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:56" (1/1) ... [2019-11-15 21:13:56,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:56" (1/1) ... [2019-11-15 21:13:56,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:56" (1/1) ... [2019-11-15 21:13:56,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:56" (1/1) ... [2019-11-15 21:13:56,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:56" (1/1) ... [2019-11-15 21:13:56,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:56" (1/1) ... [2019-11-15 21:13:56,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:13:56,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:13:56,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:13:56,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:13:56,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:13:56,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:13:56,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:13:56,481 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-15 21:13:57,040 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2019-11-15 21:13:57,040 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2019-11-15 21:13:57,041 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:13:57,042 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 21:13:57,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:13:57 BoogieIcfgContainer [2019-11-15 21:13:57,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:13:57,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:13:57,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:13:57,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:13:57,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:13:55" (1/3) ... [2019-11-15 21:13:57,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a65491c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:13:57, skipping insertion in model container [2019-11-15 21:13:57,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:13:56" (2/3) ... [2019-11-15 21:13:57,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a65491c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:13:57, skipping insertion in model container [2019-11-15 21:13:57,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:13:57" (3/3) ... [2019-11-15 21:13:57,048 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2019-11-15 21:13:57,060 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:13:57,066 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 21:13:57,076 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 21:13:57,096 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:13:57,097 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:13:57,097 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:13:57,097 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:13:57,097 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:13:57,097 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:13:57,097 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:13:57,098 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:13:57,113 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-11-15 21:13:57,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 21:13:57,120 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:13:57,121 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] [2019-11-15 21:13:57,122 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:13:57,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:13:57,128 INFO L82 PathProgramCache]: Analyzing trace with hash 511659491, now seen corresponding path program 1 times [2019-11-15 21:13:57,138 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:13:57,138 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1228630605] [2019-11-15 21:13:57,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:13:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:13:57,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:13:57,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:13:57,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:13:57,307 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:13:57,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:13:57,315 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1228630605] [2019-11-15 21:13:57,316 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:13:57,317 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 21:13:57,317 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139013026] [2019-11-15 21:13:57,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 21:13:57,321 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:13:57,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:13:57,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:13:57,332 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-11-15 21:13:57,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:13:57,536 INFO L93 Difference]: Finished difference Result 246 states and 422 transitions. [2019-11-15 21:13:57,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:13:57,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-15 21:13:57,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:13:57,549 INFO L225 Difference]: With dead ends: 246 [2019-11-15 21:13:57,549 INFO L226 Difference]: Without dead ends: 112 [2019-11-15 21:13:57,552 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 [2019-11-15 21:13:57,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-15 21:13:57,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-11-15 21:13:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-15 21:13:57,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 170 transitions. [2019-11-15 21:13:57,624 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 170 transitions. Word has length 24 [2019-11-15 21:13:57,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:13:57,624 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 170 transitions. [2019-11-15 21:13:57,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 21:13:57,625 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 170 transitions. [2019-11-15 21:13:57,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-15 21:13:57,627 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:13:57,628 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] [2019-11-15 21:13:57,828 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:13:57,832 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:13:57,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:13:57,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1971493731, now seen corresponding path program 1 times [2019-11-15 21:13:57,833 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:13:57,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [86101435] [2019-11-15 21:13:57,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:13:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:13:57,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:13:57,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:13:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:13:57,941 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:13:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:13:57,947 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [86101435] [2019-11-15 21:13:57,947 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:13:57,947 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 21:13:57,947 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084860194] [2019-11-15 21:13:57,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 21:13:57,949 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:13:57,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:13:57,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:13:57,950 INFO L87 Difference]: Start difference. First operand 112 states and 170 transitions. Second operand 3 states. [2019-11-15 21:13:58,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:13:58,140 INFO L93 Difference]: Finished difference Result 232 states and 355 transitions. [2019-11-15 21:13:58,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:13:58,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-11-15 21:13:58,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:13:58,143 INFO L225 Difference]: With dead ends: 232 [2019-11-15 21:13:58,143 INFO L226 Difference]: Without dead ends: 130 [2019-11-15 21:13:58,144 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 [2019-11-15 21:13:58,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-11-15 21:13:58,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-11-15 21:13:58,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-15 21:13:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 190 transitions. [2019-11-15 21:13:58,160 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 190 transitions. Word has length 36 [2019-11-15 21:13:58,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:13:58,161 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 190 transitions. [2019-11-15 21:13:58,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 21:13:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 190 transitions. [2019-11-15 21:13:58,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-15 21:13:58,167 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:13:58,167 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] [2019-11-15 21:13:58,369 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:13:58,372 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:13:58,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:13:58,373 INFO L82 PathProgramCache]: Analyzing trace with hash 441356492, now seen corresponding path program 1 times [2019-11-15 21:13:58,373 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:13:58,388 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [400839605] [2019-11-15 21:13:58,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:13:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:13:58,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:13:58,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:13:58,510 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 21:13:58,510 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:13:58,517 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 21:13:58,518 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [400839605] [2019-11-15 21:13:58,518 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:13:58,518 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 21:13:58,519 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038796747] [2019-11-15 21:13:58,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 21:13:58,520 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:13:58,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:13:58,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:13:58,520 INFO L87 Difference]: Start difference. First operand 127 states and 190 transitions. Second operand 3 states. [2019-11-15 21:13:58,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:13:58,701 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2019-11-15 21:13:58,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:13:58,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-11-15 21:13:58,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:13:58,703 INFO L225 Difference]: With dead ends: 265 [2019-11-15 21:13:58,704 INFO L226 Difference]: Without dead ends: 148 [2019-11-15 21:13:58,705 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 [2019-11-15 21:13:58,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-11-15 21:13:58,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-11-15 21:13:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-15 21:13:58,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 212 transitions. [2019-11-15 21:13:58,717 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 212 transitions. Word has length 50 [2019-11-15 21:13:58,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:13:58,717 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 212 transitions. [2019-11-15 21:13:58,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 21:13:58,718 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 212 transitions. [2019-11-15 21:13:58,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-15 21:13:58,719 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:13:58,720 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] [2019-11-15 21:13:58,922 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:13:58,922 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:13:58,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:13:58,922 INFO L82 PathProgramCache]: Analyzing trace with hash -394489400, now seen corresponding path program 1 times [2019-11-15 21:13:58,923 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:13:58,923 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [819045107] [2019-11-15 21:13:58,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:13:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:13:59,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 21:13:59,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:13:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-15 21:13:59,172 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:13:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-15 21:13:59,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [819045107] [2019-11-15 21:13:59,279 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:13:59,279 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-11-15 21:13:59,279 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715194781] [2019-11-15 21:13:59,280 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 21:13:59,280 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:13:59,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 21:13:59,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 21:13:59,281 INFO L87 Difference]: Start difference. First operand 144 states and 212 transitions. Second operand 6 states. [2019-11-15 21:13:59,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:13:59,933 INFO L93 Difference]: Finished difference Result 513 states and 781 transitions. [2019-11-15 21:13:59,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 21:13:59,934 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2019-11-15 21:13:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:13:59,937 INFO L225 Difference]: With dead ends: 513 [2019-11-15 21:13:59,937 INFO L226 Difference]: Without dead ends: 378 [2019-11-15 21:13:59,938 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 [2019-11-15 21:13:59,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2019-11-15 21:13:59,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 366. [2019-11-15 21:13:59,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2019-11-15 21:13:59,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 540 transitions. [2019-11-15 21:13:59,984 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 540 transitions. Word has length 67 [2019-11-15 21:13:59,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:13:59,989 INFO L462 AbstractCegarLoop]: Abstraction has 366 states and 540 transitions. [2019-11-15 21:13:59,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 21:13:59,989 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 540 transitions. [2019-11-15 21:13:59,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-15 21:13:59,994 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:13:59,995 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] [2019-11-15 21:14:00,199 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:14:00,199 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:14:00,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:14:00,200 INFO L82 PathProgramCache]: Analyzing trace with hash 2095039562, now seen corresponding path program 1 times [2019-11-15 21:14:00,200 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:14:00,200 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1704161111] [2019-11-15 21:14:00,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:14:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:14:00,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:14:00,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:14:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-15 21:14:00,318 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:14:00,327 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-15 21:14:00,328 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1704161111] [2019-11-15 21:14:00,328 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:14:00,328 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 21:14:00,329 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843202676] [2019-11-15 21:14:00,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 21:14:00,329 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:14:00,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:14:00,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:14:00,330 INFO L87 Difference]: Start difference. First operand 366 states and 540 transitions. Second operand 3 states. [2019-11-15 21:14:00,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:14:00,366 INFO L93 Difference]: Finished difference Result 874 states and 1297 transitions. [2019-11-15 21:14:00,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:14:00,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-11-15 21:14:00,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:14:00,370 INFO L225 Difference]: With dead ends: 874 [2019-11-15 21:14:00,370 INFO L226 Difference]: Without dead ends: 521 [2019-11-15 21:14:00,372 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 [2019-11-15 21:14:00,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2019-11-15 21:14:00,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 519. [2019-11-15 21:14:00,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-11-15 21:14:00,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 768 transitions. [2019-11-15 21:14:00,400 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 768 transitions. Word has length 67 [2019-11-15 21:14:00,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:14:00,400 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 768 transitions. [2019-11-15 21:14:00,403 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 21:14:00,404 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 768 transitions. [2019-11-15 21:14:00,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-15 21:14:00,409 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:14:00,409 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] [2019-11-15 21:14:00,611 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:14:00,611 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:14:00,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:14:00,611 INFO L82 PathProgramCache]: Analyzing trace with hash -811886006, now seen corresponding path program 1 times [2019-11-15 21:14:00,612 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:14:00,612 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1021933593] [2019-11-15 21:14:00,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:14:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:14:00,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:14:00,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:14:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-15 21:14:00,733 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:14:00,741 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-15 21:14:00,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1021933593] [2019-11-15 21:14:00,742 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:14:00,742 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 21:14:00,742 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024388707] [2019-11-15 21:14:00,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 21:14:00,743 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:14:00,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:14:00,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:14:00,744 INFO L87 Difference]: Start difference. First operand 519 states and 768 transitions. Second operand 3 states. [2019-11-15 21:14:00,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:14:00,780 INFO L93 Difference]: Finished difference Result 523 states and 770 transitions. [2019-11-15 21:14:00,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:14:00,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-11-15 21:14:00,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:14:00,784 INFO L225 Difference]: With dead ends: 523 [2019-11-15 21:14:00,784 INFO L226 Difference]: Without dead ends: 366 [2019-11-15 21:14:00,784 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 [2019-11-15 21:14:00,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2019-11-15 21:14:00,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 364. [2019-11-15 21:14:00,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-11-15 21:14:00,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 531 transitions. [2019-11-15 21:14:00,797 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 531 transitions. Word has length 67 [2019-11-15 21:14:00,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:14:00,798 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 531 transitions. [2019-11-15 21:14:00,798 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 21:14:00,798 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 531 transitions. [2019-11-15 21:14:00,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-15 21:14:00,799 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:14:00,799 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] [2019-11-15 21:14:01,001 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:14:01,002 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:14:01,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:14:01,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1677642956, now seen corresponding path program 1 times [2019-11-15 21:14:01,002 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:14:01,002 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [246079372] [2019-11-15 21:14:01,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:14:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:14:01,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 21:14:01,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:14:01,193 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 21:14:01,193 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:14:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 21:14:01,264 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [246079372] [2019-11-15 21:14:01,264 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 21:14:01,264 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-11-15 21:14:01,265 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351475505] [2019-11-15 21:14:01,265 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-15 21:14:01,265 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:14:01,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-15 21:14:01,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-15 21:14:01,266 INFO L87 Difference]: Start difference. First operand 364 states and 531 transitions. Second operand 11 states. [2019-11-15 21:14:02,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:14:02,412 INFO L93 Difference]: Finished difference Result 828 states and 1231 transitions. [2019-11-15 21:14:02,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-15 21:14:02,413 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2019-11-15 21:14:02,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:14:02,417 INFO L225 Difference]: With dead ends: 828 [2019-11-15 21:14:02,417 INFO L226 Difference]: Without dead ends: 672 [2019-11-15 21:14:02,418 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2019-11-15 21:14:02,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2019-11-15 21:14:02,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 423. [2019-11-15 21:14:02,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2019-11-15 21:14:02,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 600 transitions. [2019-11-15 21:14:02,437 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 600 transitions. Word has length 67 [2019-11-15 21:14:02,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:14:02,438 INFO L462 AbstractCegarLoop]: Abstraction has 423 states and 600 transitions. [2019-11-15 21:14:02,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-15 21:14:02,438 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 600 transitions. [2019-11-15 21:14:02,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-15 21:14:02,440 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:14:02,440 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] [2019-11-15 21:14:02,644 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:14:02,644 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:14:02,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:14:02,644 INFO L82 PathProgramCache]: Analyzing trace with hash -602651212, now seen corresponding path program 1 times [2019-11-15 21:14:02,645 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:14:02,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1391373962] [2019-11-15 21:14:02,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:14:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:14:02,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:14:02,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:14:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-15 21:14:02,778 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:14:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-15 21:14:02,790 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1391373962] [2019-11-15 21:14:02,791 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:14:02,791 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 21:14:02,791 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792405944] [2019-11-15 21:14:02,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 21:14:02,792 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:14:02,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:14:02,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:14:02,793 INFO L87 Difference]: Start difference. First operand 423 states and 600 transitions. Second operand 3 states. [2019-11-15 21:14:02,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:14:02,960 INFO L93 Difference]: Finished difference Result 881 states and 1266 transitions. [2019-11-15 21:14:02,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:14:02,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2019-11-15 21:14:02,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:14:02,964 INFO L225 Difference]: With dead ends: 881 [2019-11-15 21:14:02,964 INFO L226 Difference]: Without dead ends: 471 [2019-11-15 21:14:02,965 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 [2019-11-15 21:14:02,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-11-15 21:14:02,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 465. [2019-11-15 21:14:02,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2019-11-15 21:14:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 652 transitions. [2019-11-15 21:14:02,986 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 652 transitions. Word has length 84 [2019-11-15 21:14:02,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:14:02,986 INFO L462 AbstractCegarLoop]: Abstraction has 465 states and 652 transitions. [2019-11-15 21:14:02,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 21:14:02,987 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 652 transitions. [2019-11-15 21:14:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-15 21:14:02,988 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:14:02,989 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] [2019-11-15 21:14:03,191 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:14:03,192 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:14:03,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:14:03,192 INFO L82 PathProgramCache]: Analyzing trace with hash -801029670, now seen corresponding path program 1 times [2019-11-15 21:14:03,193 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:14:03,193 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1381225769] [2019-11-15 21:14:03,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:14:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:14:03,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:14:03,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:14:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-15 21:14:03,337 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:14:03,356 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-15 21:14:03,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1381225769] [2019-11-15 21:14:03,357 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:14:03,357 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-15 21:14:03,357 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357537999] [2019-11-15 21:14:03,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 21:14:03,358 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:14:03,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 21:14:03,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 21:14:03,359 INFO L87 Difference]: Start difference. First operand 465 states and 652 transitions. Second operand 4 states. [2019-11-15 21:14:03,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:14:03,422 INFO L93 Difference]: Finished difference Result 1415 states and 1978 transitions. [2019-11-15 21:14:03,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 21:14:03,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-11-15 21:14:03,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:14:03,429 INFO L225 Difference]: With dead ends: 1415 [2019-11-15 21:14:03,429 INFO L226 Difference]: Without dead ends: 963 [2019-11-15 21:14:03,430 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 [2019-11-15 21:14:03,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2019-11-15 21:14:03,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 959. [2019-11-15 21:14:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-11-15 21:14:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1327 transitions. [2019-11-15 21:14:03,463 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1327 transitions. Word has length 103 [2019-11-15 21:14:03,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:14:03,463 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1327 transitions. [2019-11-15 21:14:03,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 21:14:03,463 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1327 transitions. [2019-11-15 21:14:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-15 21:14:03,465 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:14:03,465 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] [2019-11-15 21:14:03,676 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:14:03,676 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:14:03,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:14:03,677 INFO L82 PathProgramCache]: Analyzing trace with hash -935043176, now seen corresponding path program 1 times [2019-11-15 21:14:03,677 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:14:03,677 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [519843331] [2019-11-15 21:14:03,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:14:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:14:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:14:04,150 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-15 21:14:04,150 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 21:14:04,354 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 21:14:04,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:14:04 BoogieIcfgContainer [2019-11-15 21:14:04,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:14:04,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:14:04,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:14:04,452 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:14:04,452 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:13:57" (3/4) ... [2019-11-15 21:14:04,455 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 21:14:04,592 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2a4ea51c-63d5-44d0-a588-497c70c97a1d/bin/uautomizer/witness.graphml [2019-11-15 21:14:04,592 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:14:04,594 INFO L168 Benchmark]: Toolchain (without parser) took 8893.64 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 275.3 MB). Free memory was 952.3 MB in the beginning and 1.2 GB in the end (delta: -205.5 MB). Peak memory consumption was 69.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:14:04,595 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:14:04,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 498.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:14:04,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:14:04,596 INFO L168 Benchmark]: Boogie Preprocessor took 34.44 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. [2019-11-15 21:14:04,596 INFO L168 Benchmark]: RCFGBuilder took 742.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. [2019-11-15 21:14:04,596 INFO L168 Benchmark]: TraceAbstraction took 7408.11 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 121.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -74.7 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:14:04,597 INFO L168 Benchmark]: Witness Printer took 140.98 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:14:04,598 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 498.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 64.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.44 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 742.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7408.11 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 121.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -74.7 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. * Witness Printer took 140.98 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 614]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L623] int __retres1 ; [L9] int s__info_callback = __VERIFIER_nondet_int(); [L10] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L11] int s__state ; [L12] int s__new_session ; [L13] int s__server ; [L14] unsigned int s__version = __VERIFIER_nondet_uint(); [L15] int s__type ; [L16] int s__init_num ; [L17] int s__bbio = __VERIFIER_nondet_int(); [L18] int s__wbio = __VERIFIER_nondet_int(); [L19] int s__hit = __VERIFIER_nondet_int(); [L20] int s__rwstate ; [L21] int s__init_buf___0 ; [L22] int s__debug = __VERIFIER_nondet_int(); [L23] int s__shutdown ; [L24] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L25] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L26] unsigned int s__ctx__stats__sess_connect ; [L27] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L29] int s__s3__change_cipher_spec ; [L30] int s__s3__flags ; [L31] int s__s3__delay_buf_pop_ret ; [L32] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L33] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L34] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__next_state___0 ; [L38] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L39] int s__session__cipher ; [L40] int s__session__compress_meth ; [L41] int buf ; [L42] unsigned long tmp ; [L43] unsigned long l ; [L44] int num1 ; [L45] int cb ; [L46] int ret ; [L47] int new_state ; [L48] int state ; [L49] int skip ; [L50] int tmp___0 ; [L51] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L52] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L53] int tmp___3 = __VERIFIER_nondet_int(); [L54] int tmp___4 = __VERIFIER_nondet_int(); [L55] int tmp___5 = __VERIFIER_nondet_int(); [L56] int tmp___6 = __VERIFIER_nondet_int(); [L57] int tmp___7 = __VERIFIER_nondet_int(); [L58] int tmp___8 = __VERIFIER_nondet_int(); [L59] int tmp___9 = __VERIFIER_nondet_int(); [L60] int blastFlag ; [L61] int ag_X ; [L62] int ag_Y ; [L63] int ag_Z ; [L64] int __retres60 ; [L67] s__state = 12292 [L68] blastFlag = 0 [L69] tmp = __VERIFIER_nondet_int() [L70] cb = 0 [L71] ret = -1 [L72] skip = 0 [L73] tmp___0 = 0 [L74] COND TRUE s__info_callback != 0 [L75] cb = s__info_callback [L83] s__in_handshake = s__in_handshake + 1 [L84] COND FALSE !(tmp___1 + 12288) [L93] COND FALSE !(\read(s__hit)) [L96] ag_Z = 48 [L99] COND TRUE 1 [L101] state = s__state [L102] COND TRUE s__state == 12292 [L205] s__new_session = 1 [L206] s__state = 4096 [L207] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L212] s__server = 0 [L213] COND TRUE cb != 0 [L218] COND FALSE !(s__version + 65280 != 768) [L224] s__type = 4096 [L225] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L243] COND FALSE !(! tmp___4) [L249] COND FALSE !(! tmp___5) [L255] s__state = 4368 [L256] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L257] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND TRUE s__state == 4368 [L261] s__shutdown = 0 [L262] ret = __VERIFIER_nondet_int() [L263] COND TRUE blastFlag == 0 [L264] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] ag_X = s__state - 32 [L275] s__init_num = 0 [L276] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND TRUE s__state == 4384 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L294] COND FALSE !(ret <= 0) [L299] s__state = ag_X [L300] COND FALSE !(\read(s__hit)) [L303] s__state = s__state | ag_Z [L305] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND TRUE s__state == 4400 [L309] COND TRUE (unsigned long )s__s3__tmp__new_cipher__algorithms + 256UL [L310] skip = 1 [L324] s__state = 4416 [L325] s__init_num = 0 [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND TRUE s__state == 4416 [L329] ret = __VERIFIER_nondet_int() [L330] COND FALSE !(blastFlag == 3) [L335] COND FALSE !(ret <= 0) [L340] s__state = 4432 [L341] s__init_num = 0 [L342] COND FALSE !(! tmp___6) [L572] COND FALSE !(! s__s3__tmp__reuse_message) [L601] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND FALSE !(s__state == 4416) [L138] COND FALSE !(s__state == 4417) [L141] COND TRUE s__state == 4432 [L351] ret = __VERIFIER_nondet_int() [L352] COND TRUE blastFlag <= 5 [L614] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Result: UNSAFE, OverallTime: 7.3s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1698 SDtfs, 1753 SDslu, 2509 SDs, 0 SdLazy, 1659 SolverSat, 239 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1122 GetRequests, 1091 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=959occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 282 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 668 NumberOfCodeBlocks, 668 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1112 ConstructedInterpolants, 59 QuantifiedInterpolants, 195008 SizeOfPredicates, 7 NumberOfNonLiveVariables, 988 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 695/796 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...