./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_1.BV.c.cil-2a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_1.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/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 8f0681106713dda8f6af7535e98def966db59035 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_1.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/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 8f0681106713dda8f6af7535e98def966db59035 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:55:05,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:05,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:05,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:05,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:05,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:05,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:05,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:05,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:05,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:05,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:05,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:05,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:05,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:05,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:05,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:05,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:05,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:05,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:05,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:05,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:05,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:05,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:05,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:05,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:05,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:05,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:05,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:05,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:05,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:05,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:05,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:05,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:05,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:05,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:05,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:05,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:05,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:05,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:05,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:05,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:05,160 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:55:05,171 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:05,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:05,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:05,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:05,173 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:05,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:05,173 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:05,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:05,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:05,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:05,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:55:05,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:55:05,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:55:05,174 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:05,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:05,174 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:05,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:55:05,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:05,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:05,175 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:55:05,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:55:05,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:05,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:05,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:55:05,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:55:05,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:05,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:55:05,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:55:05,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/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 -> 8f0681106713dda8f6af7535e98def966db59035 [2019-10-22 08:55:05,208 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:05,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:05,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:05,222 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:05,222 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:05,223 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_1.BV.c.cil-2a.c [2019-10-22 08:55:05,273 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/data/5b036d36a/0a118d3bf480408e8e345733853ddbbd/FLAGccef4a3d3 [2019-10-22 08:55:05,694 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:05,694 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/sv-benchmarks/c/bitvector/s3_clnt_1.BV.c.cil-2a.c [2019-10-22 08:55:05,710 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/data/5b036d36a/0a118d3bf480408e8e345733853ddbbd/FLAGccef4a3d3 [2019-10-22 08:55:06,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/data/5b036d36a/0a118d3bf480408e8e345733853ddbbd [2019-10-22 08:55:06,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:06,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:06,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:06,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:06,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:06,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f49becc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06, skipping insertion in model container [2019-10-22 08:55:06,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,089 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:06,133 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:06,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:06,426 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:06,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:06,490 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:06,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06 WrapperNode [2019-10-22 08:55:06,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:06,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:06,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:06,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:06,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:06,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:06,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:06,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:06,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:06,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:06,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:06,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:06,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:06,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:06,747 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-22 08:55:07,207 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2019-10-22 08:55:07,207 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2019-10-22 08:55:07,208 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:07,208 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 08:55:07,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:07 BoogieIcfgContainer [2019-10-22 08:55:07,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:07,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:55:07,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:55:07,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:55:07,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:55:06" (1/3) ... [2019-10-22 08:55:07,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46fb8ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:07, skipping insertion in model container [2019-10-22 08:55:07,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (2/3) ... [2019-10-22 08:55:07,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46fb8ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:07, skipping insertion in model container [2019-10-22 08:55:07,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:07" (3/3) ... [2019-10-22 08:55:07,219 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.BV.c.cil-2a.c [2019-10-22 08:55:07,228 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:55:07,234 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:55:07,244 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:55:07,266 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:55:07,266 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:55:07,266 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:55:07,266 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:07,266 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:07,266 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:55:07,266 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:07,267 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:55:07,282 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-10-22 08:55:07,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 08:55:07,289 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:07,290 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] [2019-10-22 08:55:07,299 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:07,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:07,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1449582915, now seen corresponding path program 1 times [2019-10-22 08:55:07,321 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:07,321 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303363279] [2019-10-22 08:55:07,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,322 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:07,477 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303363279] [2019-10-22 08:55:07,478 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:07,478 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:55:07,478 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399389721] [2019-10-22 08:55:07,482 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:07,482 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:07,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:07,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:07,492 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-10-22 08:55:07,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:07,659 INFO L93 Difference]: Finished difference Result 247 states and 422 transitions. [2019-10-22 08:55:07,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:07,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-22 08:55:07,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:07,672 INFO L225 Difference]: With dead ends: 247 [2019-10-22 08:55:07,672 INFO L226 Difference]: Without dead ends: 112 [2019-10-22 08:55:07,677 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:07,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-10-22 08:55:07,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-10-22 08:55:07,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-10-22 08:55:07,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2019-10-22 08:55:07,725 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 23 [2019-10-22 08:55:07,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:07,726 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2019-10-22 08:55:07,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:07,726 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2019-10-22 08:55:07,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 08:55:07,727 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:07,727 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:07,727 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:07,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:07,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1463943324, now seen corresponding path program 1 times [2019-10-22 08:55:07,728 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:07,728 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173811058] [2019-10-22 08:55:07,728 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,728 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:07,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173811058] [2019-10-22 08:55:07,846 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:07,847 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:55:07,847 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821883473] [2019-10-22 08:55:07,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:07,850 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:07,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:07,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:07,851 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand 3 states. [2019-10-22 08:55:07,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:07,973 INFO L93 Difference]: Finished difference Result 233 states and 355 transitions. [2019-10-22 08:55:07,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:07,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-22 08:55:07,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:07,975 INFO L225 Difference]: With dead ends: 233 [2019-10-22 08:55:07,975 INFO L226 Difference]: Without dead ends: 130 [2019-10-22 08:55:07,976 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:07,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-10-22 08:55:07,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-10-22 08:55:07,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-22 08:55:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2019-10-22 08:55:07,985 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2019-10-22 08:55:07,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:07,986 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2019-10-22 08:55:07,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:07,986 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2019-10-22 08:55:07,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 08:55:07,987 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:07,987 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:07,987 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:07,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:07,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1876827341, now seen corresponding path program 1 times [2019-10-22 08:55:07,988 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:07,988 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104510615] [2019-10-22 08:55:07,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 08:55:08,043 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104510615] [2019-10-22 08:55:08,043 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:08,043 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:55:08,043 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267026508] [2019-10-22 08:55:08,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:08,044 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:08,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:08,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:08,044 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand 3 states. [2019-10-22 08:55:08,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:08,156 INFO L93 Difference]: Finished difference Result 266 states and 401 transitions. [2019-10-22 08:55:08,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:08,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-10-22 08:55:08,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:08,158 INFO L225 Difference]: With dead ends: 266 [2019-10-22 08:55:08,158 INFO L226 Difference]: Without dead ends: 148 [2019-10-22 08:55:08,159 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:08,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-10-22 08:55:08,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-10-22 08:55:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-22 08:55:08,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2019-10-22 08:55:08,168 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2019-10-22 08:55:08,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:08,169 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2019-10-22 08:55:08,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:08,169 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2019-10-22 08:55:08,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-22 08:55:08,170 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:08,170 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:08,170 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:08,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:08,171 INFO L82 PathProgramCache]: Analyzing trace with hash -708368503, now seen corresponding path program 1 times [2019-10-22 08:55:08,171 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:08,171 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085192734] [2019-10-22 08:55:08,171 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,171 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 08:55:08,236 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085192734] [2019-10-22 08:55:08,236 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:08,236 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:55:08,236 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125153354] [2019-10-22 08:55:08,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:08,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:08,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:08,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:08,237 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand 3 states. [2019-10-22 08:55:08,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:08,431 INFO L93 Difference]: Finished difference Result 330 states and 498 transitions. [2019-10-22 08:55:08,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:08,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-10-22 08:55:08,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:08,433 INFO L225 Difference]: With dead ends: 330 [2019-10-22 08:55:08,433 INFO L226 Difference]: Without dead ends: 194 [2019-10-22 08:55:08,434 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:08,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2019-10-22 08:55:08,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 185. [2019-10-22 08:55:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2019-10-22 08:55:08,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 261 transitions. [2019-10-22 08:55:08,451 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 261 transitions. Word has length 67 [2019-10-22 08:55:08,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:08,451 INFO L462 AbstractCegarLoop]: Abstraction has 185 states and 261 transitions. [2019-10-22 08:55:08,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:08,451 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 261 transitions. [2019-10-22 08:55:08,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-22 08:55:08,453 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:08,453 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:08,453 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:08,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:08,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1781160459, now seen corresponding path program 1 times [2019-10-22 08:55:08,454 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:08,456 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741796316] [2019-10-22 08:55:08,456 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,457 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 08:55:08,547 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741796316] [2019-10-22 08:55:08,548 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:08,548 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:55:08,548 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678821175] [2019-10-22 08:55:08,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:08,549 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:08,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:08,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:08,549 INFO L87 Difference]: Start difference. First operand 185 states and 261 transitions. Second operand 3 states. [2019-10-22 08:55:08,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:08,702 INFO L93 Difference]: Finished difference Result 384 states and 549 transitions. [2019-10-22 08:55:08,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:08,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-10-22 08:55:08,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:08,703 INFO L225 Difference]: With dead ends: 384 [2019-10-22 08:55:08,704 INFO L226 Difference]: Without dead ends: 208 [2019-10-22 08:55:08,705 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2019-10-22 08:55:08,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2019-10-22 08:55:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2019-10-22 08:55:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 285 transitions. [2019-10-22 08:55:08,724 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 285 transitions. Word has length 67 [2019-10-22 08:55:08,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:08,724 INFO L462 AbstractCegarLoop]: Abstraction has 204 states and 285 transitions. [2019-10-22 08:55:08,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:08,725 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 285 transitions. [2019-10-22 08:55:08,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-22 08:55:08,730 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:08,730 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] [2019-10-22 08:55:08,731 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:08,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:08,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1647185185, now seen corresponding path program 1 times [2019-10-22 08:55:08,731 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:08,732 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652427682] [2019-10-22 08:55:08,732 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,732 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-22 08:55:08,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652427682] [2019-10-22 08:55:08,803 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:08,803 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:55:08,803 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074408742] [2019-10-22 08:55:08,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:08,803 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:08,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:08,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:08,804 INFO L87 Difference]: Start difference. First operand 204 states and 285 transitions. Second operand 3 states. [2019-10-22 08:55:08,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:08,924 INFO L93 Difference]: Finished difference Result 423 states and 599 transitions. [2019-10-22 08:55:08,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:08,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2019-10-22 08:55:08,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:08,925 INFO L225 Difference]: With dead ends: 423 [2019-10-22 08:55:08,926 INFO L226 Difference]: Without dead ends: 228 [2019-10-22 08:55:08,931 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:08,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2019-10-22 08:55:08,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2019-10-22 08:55:08,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2019-10-22 08:55:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 311 transitions. [2019-10-22 08:55:08,947 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 311 transitions. Word has length 83 [2019-10-22 08:55:08,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:08,947 INFO L462 AbstractCegarLoop]: Abstraction has 225 states and 311 transitions. [2019-10-22 08:55:08,948 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:08,948 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 311 transitions. [2019-10-22 08:55:08,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-22 08:55:08,949 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:08,949 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:08,950 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:08,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:08,955 INFO L82 PathProgramCache]: Analyzing trace with hash -629532647, now seen corresponding path program 1 times [2019-10-22 08:55:08,956 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:08,956 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058526868] [2019-10-22 08:55:08,956 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,956 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-22 08:55:09,047 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058526868] [2019-10-22 08:55:09,048 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:09,048 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:55:09,048 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397824054] [2019-10-22 08:55:09,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:09,051 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:09,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:09,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:09,051 INFO L87 Difference]: Start difference. First operand 225 states and 311 transitions. Second operand 3 states. [2019-10-22 08:55:09,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:09,097 INFO L93 Difference]: Finished difference Result 655 states and 906 transitions. [2019-10-22 08:55:09,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:09,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2019-10-22 08:55:09,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:09,101 INFO L225 Difference]: With dead ends: 655 [2019-10-22 08:55:09,101 INFO L226 Difference]: Without dead ends: 439 [2019-10-22 08:55:09,102 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:09,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2019-10-22 08:55:09,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2019-10-22 08:55:09,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2019-10-22 08:55:09,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 605 transitions. [2019-10-22 08:55:09,129 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 605 transitions. Word has length 103 [2019-10-22 08:55:09,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:09,129 INFO L462 AbstractCegarLoop]: Abstraction has 439 states and 605 transitions. [2019-10-22 08:55:09,130 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 605 transitions. [2019-10-22 08:55:09,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-22 08:55:09,134 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:09,135 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, 1, 1] [2019-10-22 08:55:09,135 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:09,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:09,135 INFO L82 PathProgramCache]: Analyzing trace with hash -548026749, now seen corresponding path program 1 times [2019-10-22 08:55:09,135 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:09,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275957143] [2019-10-22 08:55:09,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:09,217 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-22 08:55:09,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275957143] [2019-10-22 08:55:09,218 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:09,218 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:55:09,218 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040967568] [2019-10-22 08:55:09,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:09,219 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:09,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:09,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:09,221 INFO L87 Difference]: Start difference. First operand 439 states and 605 transitions. Second operand 3 states. [2019-10-22 08:55:09,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:09,263 INFO L93 Difference]: Finished difference Result 655 states and 903 transitions. [2019-10-22 08:55:09,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:09,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2019-10-22 08:55:09,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:09,265 INFO L225 Difference]: With dead ends: 655 [2019-10-22 08:55:09,266 INFO L226 Difference]: Without dead ends: 653 [2019-10-22 08:55:09,267 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:09,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2019-10-22 08:55:09,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 653. [2019-10-22 08:55:09,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2019-10-22 08:55:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 901 transitions. [2019-10-22 08:55:09,286 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 901 transitions. Word has length 105 [2019-10-22 08:55:09,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:09,286 INFO L462 AbstractCegarLoop]: Abstraction has 653 states and 901 transitions. [2019-10-22 08:55:09,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:09,286 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 901 transitions. [2019-10-22 08:55:09,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-22 08:55:09,288 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:09,288 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:09,288 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:09,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:09,289 INFO L82 PathProgramCache]: Analyzing trace with hash 51406530, now seen corresponding path program 1 times [2019-10-22 08:55:09,289 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:09,289 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735035027] [2019-10-22 08:55:09,289 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,289 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:09,308 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:55:09,308 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62457676] [2019-10-22 08:55:09,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:09,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:55:09,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-22 08:55:09,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735035027] [2019-10-22 08:55:09,411 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-22 08:55:09,411 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62457676] [2019-10-22 08:55:09,411 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:09,411 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:55:09,411 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426393275] [2019-10-22 08:55:09,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:09,412 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:09,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:09,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:09,412 INFO L87 Difference]: Start difference. First operand 653 states and 901 transitions. Second operand 3 states. [2019-10-22 08:55:09,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:09,532 INFO L93 Difference]: Finished difference Result 1377 states and 1926 transitions. [2019-10-22 08:55:09,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:09,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2019-10-22 08:55:09,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:09,535 INFO L225 Difference]: With dead ends: 1377 [2019-10-22 08:55:09,535 INFO L226 Difference]: Without dead ends: 733 [2019-10-22 08:55:09,536 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:09,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2019-10-22 08:55:09,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 722. [2019-10-22 08:55:09,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2019-10-22 08:55:09,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 985 transitions. [2019-10-22 08:55:09,551 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 985 transitions. Word has length 130 [2019-10-22 08:55:09,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:09,551 INFO L462 AbstractCegarLoop]: Abstraction has 722 states and 985 transitions. [2019-10-22 08:55:09,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 985 transitions. [2019-10-22 08:55:09,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-22 08:55:09,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:09,553 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:09,754 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:09,754 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:09,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:09,755 INFO L82 PathProgramCache]: Analyzing trace with hash -837503083, now seen corresponding path program 1 times [2019-10-22 08:55:09,755 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:09,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123207807] [2019-10-22 08:55:09,755 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,755 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:09,770 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-22 08:55:09,770 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878108483] [2019-10-22 08:55:09,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:10,110 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:10,110 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:55:10,311 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:10,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:55:10 BoogieIcfgContainer [2019-10-22 08:55:10,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:55:10,411 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:10,411 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:10,411 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:10,412 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:07" (3/4) ... [2019-10-22 08:55:10,415 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:55:10,415 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:10,417 INFO L168 Benchmark]: Toolchain (without parser) took 4343.72 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 221.2 MB). Free memory was 943.1 MB in the beginning and 1.0 GB in the end (delta: -98.7 MB). Peak memory consumption was 122.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:10,417 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:10,418 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:10,419 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:10,419 INFO L168 Benchmark]: Boogie Preprocessor took 34.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:10,419 INFO L168 Benchmark]: RCFGBuilder took 640.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:10,421 INFO L168 Benchmark]: TraceAbstraction took 3200.30 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 31.8 MB). Peak memory consumption was 105.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:10,421 INFO L168 Benchmark]: Witness Printer took 4.26 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:10,425 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 416.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 640.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3200.30 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 31.8 MB). Peak memory consumption was 105.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.26 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 619]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 219. Possible FailurePath: [L628] 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] int s__version = __VERIFIER_nondet_int(); [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] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int(); [L28] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int(); [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] int tmp___1 ; [L52] int tmp___2 ; [L53] int tmp___3 ; [L54] int tmp___4 ; [L55] int tmp___5 ; [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 = __VERIFIER_nondet_int(); [L64] unsigned int ag_V ; [L65] unsigned int ag_W ; [L66] int __retres62 ; [L69] ag_V = 2U [L70] ag_W = 5U [L71] s__state = 12292 [L72] blastFlag = 0 [L73] tmp = __VERIFIER_nondet_int() [L74] cb = 0 [L75] ret = -1 [L76] skip = 0 [L77] tmp___0 = 0 [L78] COND TRUE s__info_callback != 0 [L79] cb = s__info_callback [L87] s__in_handshake = s__in_handshake + 1 [L88] tmp___1 = __VERIFIER_nondet_int() [L89] COND FALSE !(tmp___1 & 12288) [L100] COND TRUE 1 [L102] state = s__state [L103] COND TRUE s__state == 12292 [L206] s__new_session = 1 [L207] s__state = 4096 [L208] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L213] s__server = 0 [L214] COND TRUE cb != 0 [L219] COND FALSE !((s__version & 65280) != 768) [L225] s__type = 4096 [L226] COND FALSE !(s__init_buf___0 == 0) [L245] tmp___4 = __VERIFIER_nondet_int() [L246] COND FALSE !(! tmp___4) [L252] tmp___5 = __VERIFIER_nondet_int() [L253] COND FALSE !(! tmp___5) [L259] s__state = 4368 [L260] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L261] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND TRUE s__state == 4368 [L265] s__shutdown = 0 [L266] ret = __VERIFIER_nondet_int() [L267] COND TRUE blastFlag == 0 [L268] blastFlag = 1 [L272] COND FALSE !(ret <= 0) [L277] s__state = 4384 [L278] s__init_num = 0 [L279] COND TRUE s__bbio != s__wbio [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND TRUE s__state == 4384 [L287] ret = __VERIFIER_nondet_int() [L288] COND TRUE blastFlag == 1 [L289] blastFlag = 2 [L293] COND FALSE !(ret <= 0) [L298] COND FALSE !(\read(s__hit)) [L301] s__state = 4400 [L303] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND TRUE s__state == 4400 [L307] COND FALSE !(s__s3__tmp__new_cipher__algorithms - 256) [L310] ret = __VERIFIER_nondet_int() [L311] COND TRUE blastFlag == 2 [L312] blastFlag = 3 [L316] COND FALSE !(ret <= 0) [L322] s__state = 4416 [L323] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND TRUE s__state == 4416 [L327] ret = __VERIFIER_nondet_int() [L328] COND TRUE blastFlag == 3 [L329] blastFlag = 4 [L333] COND FALSE !(ret <= 0) [L338] s__state = 4432 [L339] s__init_num = 0 [L340] COND FALSE !(! tmp___6) [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND FALSE !(s__state == 4416) [L139] COND FALSE !(s__state == 4417) [L142] COND TRUE s__state == 4432 [L349] ret = __VERIFIER_nondet_int() [L350] COND FALSE !(blastFlag == 5) [L355] COND FALSE !(ret <= 0) [L360] s__state = 4448 [L361] ag_X = 44 [L362] ag_Y = 100 [L363] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND FALSE !(s__state == 4416) [L139] COND FALSE !(s__state == 4417) [L142] COND FALSE !(s__state == 4432) [L145] COND FALSE !(s__state == 4433) [L148] COND TRUE s__state == 4448 [L367] ret = __VERIFIER_nondet_int() [L368] COND TRUE blastFlag == 4 [L369] blastFlag = 5 [L373] COND FALSE !(ret <= 0) [L378] COND TRUE \read(s__s3__tmp__cert_req) [L379] s__state = ag_X * ag_Y + ag_Z [L383] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND FALSE !(s__state == 4416) [L139] COND FALSE !(s__state == 4417) [L142] COND TRUE s__state == 4432 [L349] ret = __VERIFIER_nondet_int() [L350] COND TRUE blastFlag == 5 [L619] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.1s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1540 SDtfs, 402 SDslu, 859 SDs, 0 SdLazy, 738 SolverSat, 101 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=722occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 34 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 815 NumberOfCodeBlocks, 815 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 655 ConstructedInterpolants, 0 QuantifiedInterpolants, 83783 SizeOfPredicates, 0 NumberOfNonLiveVariables, 336 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 659/659 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 08:55:12,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:12,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:12,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:12,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:12,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:12,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:12,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:12,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:12,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:12,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:12,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:12,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:12,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:12,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:12,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:12,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:12,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:12,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:12,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:12,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:12,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:12,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:12,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:12,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:12,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:12,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:12,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:12,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:12,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:12,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:12,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:12,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:12,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:12,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:12,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:12,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:12,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:12,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:12,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:12,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:12,486 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-10-22 08:55:12,499 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:12,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:12,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:12,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:12,501 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:12,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:12,501 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:12,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:12,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:12,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:55:12,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:55:12,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:55:12,502 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 08:55:12,502 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 08:55:12,502 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:12,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:12,503 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:12,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:55:12,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:12,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:12,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:55:12,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:55:12,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:12,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:12,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:55:12,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:55:12,504 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-10-22 08:55:12,504 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 08:55:12,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:55:12,505 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 08:55:12,505 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/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 -> 8f0681106713dda8f6af7535e98def966db59035 [2019-10-22 08:55:12,540 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:12,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:12,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:12,558 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:12,558 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:12,559 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/../../sv-benchmarks/c/bitvector/s3_clnt_1.BV.c.cil-2a.c [2019-10-22 08:55:12,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/data/3006daed5/41c015b2a7ef4095bdef7c45e0c400ec/FLAGc27089590 [2019-10-22 08:55:13,019 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:13,020 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/sv-benchmarks/c/bitvector/s3_clnt_1.BV.c.cil-2a.c [2019-10-22 08:55:13,031 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/data/3006daed5/41c015b2a7ef4095bdef7c45e0c400ec/FLAGc27089590 [2019-10-22 08:55:13,044 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/data/3006daed5/41c015b2a7ef4095bdef7c45e0c400ec [2019-10-22 08:55:13,047 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:13,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:13,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:13,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:13,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:13,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:13" (1/1) ... [2019-10-22 08:55:13,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b4998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:13, skipping insertion in model container [2019-10-22 08:55:13,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:13" (1/1) ... [2019-10-22 08:55:13,066 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:13,105 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:13,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:13,332 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:13,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:13,456 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:13,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:13 WrapperNode [2019-10-22 08:55:13,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:13,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:13,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:13,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:13,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:13" (1/1) ... [2019-10-22 08:55:13,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:13" (1/1) ... [2019-10-22 08:55:13,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:13,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:13,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:13,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:13,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:13" (1/1) ... [2019-10-22 08:55:13,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:13" (1/1) ... [2019-10-22 08:55:13,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:13" (1/1) ... [2019-10-22 08:55:13,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:13" (1/1) ... [2019-10-22 08:55:13,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:13" (1/1) ... [2019-10-22 08:55:13,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:13" (1/1) ... [2019-10-22 08:55:13,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:13" (1/1) ... [2019-10-22 08:55:13,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:13,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:13,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:13,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:13,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:13,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:13,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:13,707 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-22 08:55:14,114 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2019-10-22 08:55:14,114 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2019-10-22 08:55:14,115 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:14,115 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 08:55:14,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:14 BoogieIcfgContainer [2019-10-22 08:55:14,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:14,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:55:14,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:55:14,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:55:14,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:55:13" (1/3) ... [2019-10-22 08:55:14,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729e589a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:14, skipping insertion in model container [2019-10-22 08:55:14,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:13" (2/3) ... [2019-10-22 08:55:14,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729e589a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:14, skipping insertion in model container [2019-10-22 08:55:14,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:14" (3/3) ... [2019-10-22 08:55:14,124 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.BV.c.cil-2a.c [2019-10-22 08:55:14,132 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:55:14,139 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:55:14,148 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:55:14,169 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:55:14,169 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:55:14,169 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:55:14,169 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:14,169 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:14,170 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:55:14,170 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:14,170 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:55:14,185 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-10-22 08:55:14,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 08:55:14,191 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:14,192 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] [2019-10-22 08:55:14,193 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:14,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:14,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1449582915, now seen corresponding path program 1 times [2019-10-22 08:55:14,207 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:14,208 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1742754474] [2019-10-22 08:55:14,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:14,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:14,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:14,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:14,346 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:55:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:14,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1742754474] [2019-10-22 08:55:14,354 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:14,354 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 08:55:14,355 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119010477] [2019-10-22 08:55:14,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:14,359 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:55:14,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:14,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:14,374 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 3 states. [2019-10-22 08:55:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:14,620 INFO L93 Difference]: Finished difference Result 247 states and 422 transitions. [2019-10-22 08:55:14,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:14,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-22 08:55:14,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:14,632 INFO L225 Difference]: With dead ends: 247 [2019-10-22 08:55:14,632 INFO L226 Difference]: Without dead ends: 112 [2019-10-22 08:55:14,635 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:14,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-10-22 08:55:14,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-10-22 08:55:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-10-22 08:55:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2019-10-22 08:55:14,680 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 23 [2019-10-22 08:55:14,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:14,680 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2019-10-22 08:55:14,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:14,681 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2019-10-22 08:55:14,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 08:55:14,682 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:14,682 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:14,883 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:14,883 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:14,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:14,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1463943324, now seen corresponding path program 1 times [2019-10-22 08:55:14,884 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:14,884 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [428568353] [2019-10-22 08:55:14,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:14,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:14,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:14,973 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:55:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:14,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [428568353] [2019-10-22 08:55:14,978 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:14,978 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 08:55:14,979 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720673641] [2019-10-22 08:55:14,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:14,982 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:55:14,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:14,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:14,987 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand 3 states. [2019-10-22 08:55:15,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:15,171 INFO L93 Difference]: Finished difference Result 233 states and 355 transitions. [2019-10-22 08:55:15,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:15,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-22 08:55:15,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:15,173 INFO L225 Difference]: With dead ends: 233 [2019-10-22 08:55:15,173 INFO L226 Difference]: Without dead ends: 130 [2019-10-22 08:55:15,174 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:15,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-10-22 08:55:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2019-10-22 08:55:15,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-22 08:55:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2019-10-22 08:55:15,192 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2019-10-22 08:55:15,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:15,192 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2019-10-22 08:55:15,193 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:15,193 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2019-10-22 08:55:15,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 08:55:15,195 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:15,195 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:15,395 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:15,396 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:15,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:15,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1876827341, now seen corresponding path program 1 times [2019-10-22 08:55:15,397 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:15,397 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1278797336] [2019-10-22 08:55:15,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:15,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:15,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:15,505 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 08:55:15,505 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:55:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 08:55:15,511 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1278797336] [2019-10-22 08:55:15,512 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:15,512 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 08:55:15,512 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643003375] [2019-10-22 08:55:15,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:15,513 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:55:15,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:15,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:15,513 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand 3 states. [2019-10-22 08:55:15,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:15,659 INFO L93 Difference]: Finished difference Result 266 states and 401 transitions. [2019-10-22 08:55:15,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:15,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-10-22 08:55:15,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:15,661 INFO L225 Difference]: With dead ends: 266 [2019-10-22 08:55:15,661 INFO L226 Difference]: Without dead ends: 148 [2019-10-22 08:55:15,662 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:15,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-10-22 08:55:15,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-10-22 08:55:15,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-22 08:55:15,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2019-10-22 08:55:15,671 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2019-10-22 08:55:15,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:15,672 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2019-10-22 08:55:15,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:15,672 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2019-10-22 08:55:15,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-22 08:55:15,673 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:15,674 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:15,874 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:15,875 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:15,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:15,875 INFO L82 PathProgramCache]: Analyzing trace with hash -708368503, now seen corresponding path program 1 times [2019-10-22 08:55:15,875 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:15,875 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [619092768] [2019-10-22 08:55:15,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:15,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:15,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 08:55:15,971 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:55:15,985 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-22 08:55:15,986 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [619092768] [2019-10-22 08:55:15,986 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:15,986 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-22 08:55:15,987 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826412085] [2019-10-22 08:55:15,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:55:15,987 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:55:15,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:55:15,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:55:15,988 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand 4 states. [2019-10-22 08:55:16,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:16,057 INFO L93 Difference]: Finished difference Result 543 states and 801 transitions. [2019-10-22 08:55:16,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:55:16,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2019-10-22 08:55:16,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:16,060 INFO L225 Difference]: With dead ends: 543 [2019-10-22 08:55:16,060 INFO L226 Difference]: Without dead ends: 408 [2019-10-22 08:55:16,061 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:55:16,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2019-10-22 08:55:16,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2019-10-22 08:55:16,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2019-10-22 08:55:16,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 596 transitions. [2019-10-22 08:55:16,096 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 596 transitions. Word has length 67 [2019-10-22 08:55:16,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:16,097 INFO L462 AbstractCegarLoop]: Abstraction has 408 states and 596 transitions. [2019-10-22 08:55:16,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:55:16,097 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 596 transitions. [2019-10-22 08:55:16,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-22 08:55:16,102 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:16,103 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:16,304 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:16,304 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:16,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:16,304 INFO L82 PathProgramCache]: Analyzing trace with hash -995531590, now seen corresponding path program 1 times [2019-10-22 08:55:16,305 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:16,305 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [355165559] [2019-10-22 08:55:16,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:16,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:16,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-22 08:55:16,427 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:55:16,439 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-22 08:55:16,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [355165559] [2019-10-22 08:55:16,439 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:16,440 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 08:55:16,440 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80020982] [2019-10-22 08:55:16,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:16,440 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:55:16,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:16,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:16,441 INFO L87 Difference]: Start difference. First operand 408 states and 596 transitions. Second operand 3 states. [2019-10-22 08:55:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:16,480 INFO L93 Difference]: Finished difference Result 828 states and 1207 transitions. [2019-10-22 08:55:16,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:16,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2019-10-22 08:55:16,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:16,483 INFO L225 Difference]: With dead ends: 828 [2019-10-22 08:55:16,484 INFO L226 Difference]: Without dead ends: 429 [2019-10-22 08:55:16,485 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:16,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2019-10-22 08:55:16,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2019-10-22 08:55:16,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-10-22 08:55:16,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 623 transitions. [2019-10-22 08:55:16,510 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 623 transitions. Word has length 92 [2019-10-22 08:55:16,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:16,511 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 623 transitions. [2019-10-22 08:55:16,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:16,514 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 623 transitions. [2019-10-22 08:55:16,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-22 08:55:16,515 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:16,515 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:16,715 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:16,716 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:16,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:16,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1727499016, now seen corresponding path program 1 times [2019-10-22 08:55:16,717 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:16,717 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [380095727] [2019-10-22 08:55:16,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:16,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:16,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:16,833 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-22 08:55:16,833 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:55:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-22 08:55:16,845 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [380095727] [2019-10-22 08:55:16,845 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:16,845 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 08:55:16,845 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242579621] [2019-10-22 08:55:16,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:16,845 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:55:16,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:16,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:16,846 INFO L87 Difference]: Start difference. First operand 429 states and 623 transitions. Second operand 3 states. [2019-10-22 08:55:16,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:16,884 INFO L93 Difference]: Finished difference Result 876 states and 1268 transitions. [2019-10-22 08:55:16,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:16,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2019-10-22 08:55:16,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:16,888 INFO L225 Difference]: With dead ends: 876 [2019-10-22 08:55:16,888 INFO L226 Difference]: Without dead ends: 456 [2019-10-22 08:55:16,889 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:16,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2019-10-22 08:55:16,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2019-10-22 08:55:16,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2019-10-22 08:55:16,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 657 transitions. [2019-10-22 08:55:16,900 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 657 transitions. Word has length 92 [2019-10-22 08:55:16,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:16,901 INFO L462 AbstractCegarLoop]: Abstraction has 456 states and 657 transitions. [2019-10-22 08:55:16,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 657 transitions. [2019-10-22 08:55:16,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-22 08:55:16,902 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:16,902 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:17,103 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:17,103 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:17,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:17,104 INFO L82 PathProgramCache]: Analyzing trace with hash 198697340, now seen corresponding path program 1 times [2019-10-22 08:55:17,104 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:17,104 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1634247459] [2019-10-22 08:55:17,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:17,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:17,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-22 08:55:17,231 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:55:17,240 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-22 08:55:17,240 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1634247459] [2019-10-22 08:55:17,240 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:17,241 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 08:55:17,241 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241293492] [2019-10-22 08:55:17,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:17,241 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:55:17,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:17,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:17,242 INFO L87 Difference]: Start difference. First operand 456 states and 657 transitions. Second operand 3 states. [2019-10-22 08:55:17,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:17,387 INFO L93 Difference]: Finished difference Result 948 states and 1392 transitions. [2019-10-22 08:55:17,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:17,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2019-10-22 08:55:17,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:17,389 INFO L225 Difference]: With dead ends: 948 [2019-10-22 08:55:17,389 INFO L226 Difference]: Without dead ends: 528 [2019-10-22 08:55:17,390 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:17,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2019-10-22 08:55:17,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 519. [2019-10-22 08:55:17,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-10-22 08:55:17,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 735 transitions. [2019-10-22 08:55:17,403 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 735 transitions. Word has length 110 [2019-10-22 08:55:17,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:17,403 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 735 transitions. [2019-10-22 08:55:17,403 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:17,404 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 735 transitions. [2019-10-22 08:55:17,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-22 08:55:17,405 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:17,405 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:17,605 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:17,606 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:17,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:17,606 INFO L82 PathProgramCache]: Analyzing trace with hash 2009981316, now seen corresponding path program 1 times [2019-10-22 08:55:17,606 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:17,606 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1287085579] [2019-10-22 08:55:17,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:17,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:17,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-22 08:55:17,725 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:55:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-22 08:55:17,738 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1287085579] [2019-10-22 08:55:17,738 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:17,738 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 08:55:17,739 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382732437] [2019-10-22 08:55:17,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:17,739 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:55:17,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:17,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:17,740 INFO L87 Difference]: Start difference. First operand 519 states and 735 transitions. Second operand 3 states. [2019-10-22 08:55:17,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:17,897 INFO L93 Difference]: Finished difference Result 1081 states and 1559 transitions. [2019-10-22 08:55:17,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:17,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2019-10-22 08:55:17,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:17,900 INFO L225 Difference]: With dead ends: 1081 [2019-10-22 08:55:17,900 INFO L226 Difference]: Without dead ends: 598 [2019-10-22 08:55:17,901 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:17,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-10-22 08:55:17,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 588. [2019-10-22 08:55:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-10-22 08:55:17,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 819 transitions. [2019-10-22 08:55:17,914 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 819 transitions. Word has length 130 [2019-10-22 08:55:17,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:17,915 INFO L462 AbstractCegarLoop]: Abstraction has 588 states and 819 transitions. [2019-10-22 08:55:17,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:17,915 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 819 transitions. [2019-10-22 08:55:17,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-22 08:55:17,916 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:17,917 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:18,117 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:18,117 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:18,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:18,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1304357395, now seen corresponding path program 1 times [2019-10-22 08:55:18,118 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:18,118 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1093162616] [2019-10-22 08:55:18,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:18,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:18,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-10-22 08:55:18,229 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:55:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-10-22 08:55:18,250 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1093162616] [2019-10-22 08:55:18,250 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:18,250 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-22 08:55:18,250 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677584351] [2019-10-22 08:55:18,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:55:18,251 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:55:18,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:55:18,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:55:18,251 INFO L87 Difference]: Start difference. First operand 588 states and 819 transitions. Second operand 4 states. [2019-10-22 08:55:18,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:18,485 INFO L93 Difference]: Finished difference Result 1340 states and 1949 transitions. [2019-10-22 08:55:18,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:55:18,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-10-22 08:55:18,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:18,488 INFO L225 Difference]: With dead ends: 1340 [2019-10-22 08:55:18,488 INFO L226 Difference]: Without dead ends: 788 [2019-10-22 08:55:18,489 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:55:18,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2019-10-22 08:55:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 768. [2019-10-22 08:55:18,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2019-10-22 08:55:18,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1056 transitions. [2019-10-22 08:55:18,509 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1056 transitions. Word has length 151 [2019-10-22 08:55:18,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:18,509 INFO L462 AbstractCegarLoop]: Abstraction has 768 states and 1056 transitions. [2019-10-22 08:55:18,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:55:18,509 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1056 transitions. [2019-10-22 08:55:18,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-22 08:55:18,512 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:18,512 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:18,712 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:18,713 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:18,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:18,713 INFO L82 PathProgramCache]: Analyzing trace with hash -837503083, now seen corresponding path program 1 times [2019-10-22 08:55:18,714 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:18,714 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1482501978] [2019-10-22 08:55:18,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:19,346 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-10-22 08:55:19,346 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:55:19,547 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 08:55:19,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:55:19 BoogieIcfgContainer [2019-10-22 08:55:19,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:55:19,641 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:19,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:19,642 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:19,642 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:14" (3/4) ... [2019-10-22 08:55:19,644 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:55:19,764 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6c6b5c79-7644-45c7-93a5-8b18de778d32/bin/uautomizer/witness.graphml [2019-10-22 08:55:19,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:19,766 INFO L168 Benchmark]: Toolchain (without parser) took 6717.70 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 296.7 MB). Free memory was 952.3 MB in the beginning and 1.3 GB in the end (delta: -336.4 MB). Peak memory consumption was 361.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:19,766 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:19,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -174.4 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:19,766 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:19,767 INFO L168 Benchmark]: Boogie Preprocessor took 40.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:19,767 INFO L168 Benchmark]: RCFGBuilder took 569.11 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: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:19,767 INFO L168 Benchmark]: TraceAbstraction took 5523.65 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 805.4 MB in the end (delta: 266.9 MB). Peak memory consumption was 334.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:19,767 INFO L168 Benchmark]: Witness Printer took 122.69 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 90.7 MB). Free memory was 805.4 MB in the beginning and 1.3 GB in the end (delta: -483.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:19,769 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 408.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -174.4 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.45 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 40.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 569.11 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: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5523.65 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 805.4 MB in the end (delta: 266.9 MB). Peak memory consumption was 334.0 MB. Max. memory is 11.5 GB. * Witness Printer took 122.69 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 90.7 MB). Free memory was 805.4 MB in the beginning and 1.3 GB in the end (delta: -483.3 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: 619]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L628] 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] int s__version = __VERIFIER_nondet_int(); [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] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int(); [L28] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int(); [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] int tmp___1 ; [L52] int tmp___2 ; [L53] int tmp___3 ; [L54] int tmp___4 ; [L55] int tmp___5 ; [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 = __VERIFIER_nondet_int(); [L64] unsigned int ag_V ; [L65] unsigned int ag_W ; [L66] int __retres62 ; [L69] ag_V = 2U [L70] ag_W = 5U [L71] s__state = 12292 [L72] blastFlag = 0 [L73] tmp = __VERIFIER_nondet_int() [L74] cb = 0 [L75] ret = -1 [L76] skip = 0 [L77] tmp___0 = 0 [L78] COND TRUE s__info_callback != 0 [L79] cb = s__info_callback [L87] s__in_handshake = s__in_handshake + 1 [L88] tmp___1 = __VERIFIER_nondet_int() [L89] COND FALSE !(tmp___1 & 12288) [L100] COND TRUE 1 [L102] state = s__state [L103] COND TRUE s__state == 12292 [L206] s__new_session = 1 [L207] s__state = 4096 [L208] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L213] s__server = 0 [L214] COND TRUE cb != 0 [L219] COND FALSE !((s__version & 65280) != 768) [L225] s__type = 4096 [L226] COND FALSE !(s__init_buf___0 == 0) [L245] tmp___4 = __VERIFIER_nondet_int() [L246] COND FALSE !(! tmp___4) [L252] tmp___5 = __VERIFIER_nondet_int() [L253] COND FALSE !(! tmp___5) [L259] s__state = 4368 [L260] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L261] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND TRUE s__state == 4368 [L265] s__shutdown = 0 [L266] ret = __VERIFIER_nondet_int() [L267] COND TRUE blastFlag == 0 [L268] blastFlag = 1 [L272] COND FALSE !(ret <= 0) [L277] s__state = 4384 [L278] s__init_num = 0 [L279] COND TRUE s__bbio != s__wbio [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND TRUE s__state == 4384 [L287] ret = __VERIFIER_nondet_int() [L288] COND TRUE blastFlag == 1 [L289] blastFlag = 2 [L293] COND FALSE !(ret <= 0) [L298] COND FALSE !(\read(s__hit)) [L301] s__state = 4400 [L303] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND TRUE s__state == 4400 [L307] COND FALSE !(s__s3__tmp__new_cipher__algorithms - 256) [L310] ret = __VERIFIER_nondet_int() [L311] COND TRUE blastFlag == 2 [L312] blastFlag = 3 [L316] COND FALSE !(ret <= 0) [L322] s__state = 4416 [L323] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND TRUE s__state == 4416 [L327] ret = __VERIFIER_nondet_int() [L328] COND TRUE blastFlag == 3 [L329] blastFlag = 4 [L333] COND FALSE !(ret <= 0) [L338] s__state = 4432 [L339] s__init_num = 0 [L340] COND FALSE !(! tmp___6) [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND FALSE !(s__state == 4416) [L139] COND FALSE !(s__state == 4417) [L142] COND TRUE s__state == 4432 [L349] ret = __VERIFIER_nondet_int() [L350] COND FALSE !(blastFlag == 5) [L355] COND FALSE !(ret <= 0) [L360] s__state = 4448 [L361] ag_X = 44 [L362] ag_Y = 100 [L363] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND FALSE !(s__state == 4416) [L139] COND FALSE !(s__state == 4417) [L142] COND FALSE !(s__state == 4432) [L145] COND FALSE !(s__state == 4433) [L148] COND TRUE s__state == 4448 [L367] ret = __VERIFIER_nondet_int() [L368] COND TRUE blastFlag == 4 [L369] blastFlag = 5 [L373] COND FALSE !(ret <= 0) [L378] COND TRUE \read(s__s3__tmp__cert_req) [L379] s__state = ag_X * ag_Y + ag_Z [L383] s__init_num = 0 [L577] COND FALSE !(! s__s3__tmp__reuse_message) [L606] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND FALSE !(s__state == 4416) [L139] COND FALSE !(s__state == 4417) [L142] COND TRUE s__state == 4432 [L349] ret = __VERIFIER_nondet_int() [L350] COND TRUE blastFlag == 5 [L619] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Result: UNSAFE, OverallTime: 5.4s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1564 SDtfs, 598 SDslu, 1118 SDs, 0 SdLazy, 724 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1484 GetRequests, 1473 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=768occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 46 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 902 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1484 ConstructedInterpolants, 0 QuantifiedInterpolants, 208012 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1170 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 1748/1748 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...