./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-28 07:37:51,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:37:51,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:37:52,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:37:52,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:37:52,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:37:52,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:37:52,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:37:52,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:37:52,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:37:52,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:37:52,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:37:52,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:37:52,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:37:52,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:37:52,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:37:52,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:37:52,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:37:52,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:37:52,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:37:52,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:37:52,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:37:52,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:37:52,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:37:52,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:37:52,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:37:52,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:37:52,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:37:52,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:37:52,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:37:52,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:37:52,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:37:52,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:37:52,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:37:52,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:37:52,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:37:52,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:37:52,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:37:52,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:37:52,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:37:52,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:37:52,110 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:37:52,142 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:37:52,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:37:52,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:37:52,144 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:37:52,144 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:37:52,145 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:37:52,145 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:37:52,145 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:37:52,145 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:37:52,145 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:37:52,146 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:37:52,147 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:37:52,147 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:37:52,147 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:37:52,147 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:37:52,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:37:52,150 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:37:52,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:37:52,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:37:52,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:37:52,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:37:52,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:37:52,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:37:52,151 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:37:52,151 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:37:52,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:37:52,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:37:52,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:37:52,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:37:52,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:37:52,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:37:52,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:52,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:37:52,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:37:52,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:37:52,154 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:37:52,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:37:52,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:37:52,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:37:52,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:37:52,155 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 [2020-11-28 07:37:52,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:37:52,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:37:52,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:37:52,483 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:37:52,485 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:37:52,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-11-28 07:37:52,561 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/data/6fc39c5e1/75cf6c39830549acbbe31f345ff18a8c/FLAG8db025a06 [2020-11-28 07:37:53,152 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:37:53,165 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-11-28 07:37:53,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/data/6fc39c5e1/75cf6c39830549acbbe31f345ff18a8c/FLAG8db025a06 [2020-11-28 07:37:53,472 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/data/6fc39c5e1/75cf6c39830549acbbe31f345ff18a8c [2020-11-28 07:37:53,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:37:53,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:37:53,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:53,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:37:53,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:37:53,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f395f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53, skipping insertion in model container [2020-11-28 07:37:53,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:37:53,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:37:53,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:53,785 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:37:53,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:53,851 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:37:53,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53 WrapperNode [2020-11-28 07:37:53,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:53,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:53,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:37:53,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:37:53,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:53,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:37:53,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:37:53,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:37:53,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... [2020-11-28 07:37:53,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:37:53,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:37:53,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:37:53,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:37:53,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/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 [2020-11-28 07:37:54,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:37:54,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:37:54,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:37:54,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:37:54,253 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-28 07:37:55,131 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-11-28 07:37:55,131 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-11-28 07:37:55,647 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:37:55,647 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:37:55,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:55 BoogieIcfgContainer [2020-11-28 07:37:55,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:37:55,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:37:55,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:37:55,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:37:55,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:37:53" (1/3) ... [2020-11-28 07:37:55,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3213d8d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:55, skipping insertion in model container [2020-11-28 07:37:55,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:53" (2/3) ... [2020-11-28 07:37:55,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3213d8d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:55, skipping insertion in model container [2020-11-28 07:37:55,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:55" (3/3) ... [2020-11-28 07:37:55,658 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2020-11-28 07:37:55,668 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:37:55,673 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:37:55,684 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:37:55,707 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:37:55,708 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:37:55,708 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:37:55,708 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:37:55,708 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:37:55,708 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:37:55,708 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:37:55,709 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:37:55,723 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-11-28 07:37:55,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 07:37:55,729 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:55,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:55,730 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:55,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:55,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1372041888, now seen corresponding path program 1 times [2020-11-28 07:37:55,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:55,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320774254] [2020-11-28 07:37:55,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:55,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:55,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320774254] [2020-11-28 07:37:55,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:55,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:55,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194565262] [2020-11-28 07:37:55,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:55,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:55,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:55,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:55,944 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2020-11-28 07:37:56,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:56,172 INFO L93 Difference]: Finished difference Result 169 states and 293 transitions. [2020-11-28 07:37:56,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:56,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-28 07:37:56,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:56,184 INFO L225 Difference]: With dead ends: 169 [2020-11-28 07:37:56,184 INFO L226 Difference]: Without dead ends: 83 [2020-11-28 07:37:56,190 INFO L677 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 [2020-11-28 07:37:56,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-28 07:37:56,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-11-28 07:37:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-28 07:37:56,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2020-11-28 07:37:56,243 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 19 [2020-11-28 07:37:56,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:56,244 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2020-11-28 07:37:56,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:56,244 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2020-11-28 07:37:56,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 07:37:56,245 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:56,245 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 07:37:56,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:37:56,245 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:56,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:56,246 INFO L82 PathProgramCache]: Analyzing trace with hash -870646532, now seen corresponding path program 1 times [2020-11-28 07:37:56,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:56,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252029613] [2020-11-28 07:37:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:56,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252029613] [2020-11-28 07:37:56,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:56,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:56,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297062234] [2020-11-28 07:37:56,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:56,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:56,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:56,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:56,334 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand 3 states. [2020-11-28 07:37:56,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:56,566 INFO L93 Difference]: Finished difference Result 178 states and 261 transitions. [2020-11-28 07:37:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:56,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-11-28 07:37:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:56,569 INFO L225 Difference]: With dead ends: 178 [2020-11-28 07:37:56,569 INFO L226 Difference]: Without dead ends: 98 [2020-11-28 07:37:56,570 INFO L677 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 [2020-11-28 07:37:56,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-28 07:37:56,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-11-28 07:37:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-28 07:37:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 136 transitions. [2020-11-28 07:37:56,585 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 136 transitions. Word has length 28 [2020-11-28 07:37:56,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:56,586 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 136 transitions. [2020-11-28 07:37:56,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:56,586 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 136 transitions. [2020-11-28 07:37:56,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-28 07:37:56,587 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:56,587 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 07:37:56,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:37:56,588 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:56,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:56,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1162020225, now seen corresponding path program 1 times [2020-11-28 07:37:56,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:56,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624557194] [2020-11-28 07:37:56,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:37:56,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624557194] [2020-11-28 07:37:56,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:56,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:56,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347339528] [2020-11-28 07:37:56,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:37:56,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:56,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:37:56,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:37:56,724 INFO L87 Difference]: Start difference. First operand 96 states and 136 transitions. Second operand 3 states. [2020-11-28 07:37:56,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:56,897 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2020-11-28 07:37:56,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:37:56,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-11-28 07:37:56,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:56,899 INFO L225 Difference]: With dead ends: 206 [2020-11-28 07:37:56,899 INFO L226 Difference]: Without dead ends: 113 [2020-11-28 07:37:56,900 INFO L677 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 [2020-11-28 07:37:56,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-28 07:37:56,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2020-11-28 07:37:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-11-28 07:37:56,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 154 transitions. [2020-11-28 07:37:56,932 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 154 transitions. Word has length 39 [2020-11-28 07:37:56,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:56,932 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 154 transitions. [2020-11-28 07:37:56,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:37:56,933 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 154 transitions. [2020-11-28 07:37:56,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-28 07:37:56,934 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:56,935 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 07:37:56,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:37:56,935 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:56,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:56,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1731404066, now seen corresponding path program 1 times [2020-11-28 07:37:56,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:56,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910728920] [2020-11-28 07:37:56,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:37:57,023 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:37:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:37:57,092 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:37:57,138 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:37:57,138 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:37:57,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:37:57,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:37:57 BoogieIcfgContainer [2020-11-28 07:37:57,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:37:57,241 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:37:57,241 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:37:57,241 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:37:57,242 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:55" (3/4) ... [2020-11-28 07:37:57,245 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:37:57,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:37:57,248 INFO L168 Benchmark]: Toolchain (without parser) took 3770.59 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 82.9 MB in the beginning and 86.7 MB in the end (delta: -3.8 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:57,249 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 109.1 MB. Free memory is still 66.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:57,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.86 ms. Allocated memory is still 109.1 MB. Free memory was 82.5 MB in the beginning and 81.9 MB in the end (delta: 622.1 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:57,251 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.57 ms. Allocated memory is still 109.1 MB. Free memory was 81.7 MB in the beginning and 79.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:57,252 INFO L168 Benchmark]: Boogie Preprocessor took 35.65 ms. Allocated memory is still 109.1 MB. Free memory was 79.0 MB in the beginning and 77.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:57,255 INFO L168 Benchmark]: RCFGBuilder took 1704.61 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 77.1 MB in the beginning and 86.9 MB in the end (delta: -9.8 MB). Peak memory consumption was 43.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:57,259 INFO L168 Benchmark]: TraceAbstraction took 1588.55 ms. Allocated memory is still 132.1 MB. Free memory was 86.2 MB in the beginning and 86.7 MB in the end (delta: -498.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:57,260 INFO L168 Benchmark]: Witness Printer took 4.75 ms. Allocated memory is still 132.1 MB. Free memory is still 86.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:57,265 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 109.1 MB. Free memory is still 66.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 374.86 ms. Allocated memory is still 109.1 MB. Free memory was 82.5 MB in the beginning and 81.9 MB in the end (delta: 622.1 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.57 ms. Allocated memory is still 109.1 MB. Free memory was 81.7 MB in the beginning and 79.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.65 ms. Allocated memory is still 109.1 MB. Free memory was 79.0 MB in the beginning and 77.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1704.61 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 77.1 MB in the beginning and 86.9 MB in the end (delta: -9.8 MB). Peak memory consumption was 43.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1588.55 ms. Allocated memory is still 132.1 MB. Free memory was 86.2 MB in the beginning and 86.7 MB in the end (delta: -498.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.75 ms. Allocated memory is still 132.1 MB. Free memory is still 86.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 303. Possible FailurePath: [L625] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int ag_Z ; [L66] int __retres60 ; [L69] s__state = 12292 [L70] blastFlag = 0 [L71] tmp = __VERIFIER_nondet_int() [L72] cb = 0 [L73] ret = -1 [L74] skip = 0 [L75] tmp___0 = 0 [L76] COND TRUE s__info_callback != 0 [L77] cb = s__info_callback [L85] s__in_handshake = s__in_handshake + 1 [L86] COND TRUE tmp___1 + 12288 [L87] COND TRUE tmp___2 + 16384 [L95] COND TRUE \read(s__hit) [L96] ag_Y = 208 [L101] COND TRUE 1 [L103] state = s__state [L104] COND TRUE s__state == 12292 [L207] s__new_session = 1 [L208] s__state = 4096 [L209] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L214] s__server = 0 [L215] COND TRUE cb != 0 [L220] COND FALSE !(s__version + 65280 != 768) [L226] s__type = 4096 [L227] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L245] COND FALSE !(! tmp___4) [L251] COND FALSE !(! tmp___5) [L257] s__state = 4368 [L258] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L259] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND TRUE s__state == 4368 [L263] s__shutdown = 0 [L264] ret = __VERIFIER_nondet_int() [L265] COND TRUE blastFlag == 0 [L266] blastFlag = 1 [L270] COND FALSE !(ret <= 0) [L275] s__state = 4384 [L276] ag_X = s__state - 32 [L277] s__init_num = 0 [L278] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND TRUE s__state == 4384 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L296] COND FALSE !(ret <= 0) [L301] s__state = ag_X [L302] COND TRUE \read(s__hit) [L303] s__state = s__state | ag_Y [L307] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND FALSE !(s__state == 4416) [L140] COND FALSE !(s__state == 4417) [L143] COND TRUE s__state == 4432 [L353] ret = __VERIFIER_nondet_int() [L354] COND TRUE blastFlag <= 5 [L3] __assert_fail("0", "s3_clnt_3.BV.c.cil-2a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 375 SDtfs, 16 SDslu, 138 SDs, 0 SdLazy, 256 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 3891 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 15/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 0.2.0-a4ecdab [2020-11-28 07:37:59,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:37:59,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:37:59,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:37:59,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:37:59,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:37:59,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:37:59,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:37:59,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:37:59,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:37:59,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:37:59,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:37:59,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:37:59,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:37:59,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:37:59,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:37:59,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:37:59,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:37:59,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:37:59,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:37:59,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:37:59,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:37:59,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:37:59,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:37:59,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:37:59,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:37:59,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:37:59,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:37:59,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:37:59,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:37:59,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:37:59,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:37:59,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:37:59,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:37:59,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:37:59,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:37:59,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:37:59,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:37:59,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:37:59,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:37:59,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:37:59,704 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:37:59,730 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:37:59,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:37:59,732 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:37:59,732 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:37:59,732 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:37:59,733 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:37:59,733 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:37:59,736 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:37:59,736 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:37:59,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:37:59,738 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:37:59,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:37:59,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:37:59,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:37:59,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:37:59,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:37:59,740 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:37:59,740 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:37:59,740 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:37:59,741 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:37:59,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:37:59,741 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:37:59,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:37:59,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:37:59,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:37:59,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:37:59,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:37:59,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:59,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:37:59,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:37:59,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:37:59,744 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:37:59,744 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:37:59,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:37:59,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:37:59,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:37:59,745 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 [2020-11-28 07:38:00,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:38:00,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:38:00,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:38:00,176 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:38:00,177 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:38:00,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-11-28 07:38:00,251 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/data/d752b6439/98f85c846f524f91927d69e57855d64f/FLAGc4bdf1ff0 [2020-11-28 07:38:00,772 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:38:00,773 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-11-28 07:38:00,791 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/data/d752b6439/98f85c846f524f91927d69e57855d64f/FLAGc4bdf1ff0 [2020-11-28 07:38:01,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/data/d752b6439/98f85c846f524f91927d69e57855d64f [2020-11-28 07:38:01,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:38:01,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:38:01,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:01,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:38:01,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:38:01,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:01" (1/1) ... [2020-11-28 07:38:01,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e249a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:01, skipping insertion in model container [2020-11-28 07:38:01,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:01" (1/1) ... [2020-11-28 07:38:01,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:38:01,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:38:01,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:01,367 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:38:01,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:01,486 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:38:01,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:01 WrapperNode [2020-11-28 07:38:01,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:01,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:01,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:38:01,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:38:01,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:01" (1/1) ... [2020-11-28 07:38:01,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:01" (1/1) ... [2020-11-28 07:38:01,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:01,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:38:01,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:38:01,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:38:01,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:01" (1/1) ... [2020-11-28 07:38:01,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:01" (1/1) ... [2020-11-28 07:38:01,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:01" (1/1) ... [2020-11-28 07:38:01,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:01" (1/1) ... [2020-11-28 07:38:01,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:01" (1/1) ... [2020-11-28 07:38:01,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:01" (1/1) ... [2020-11-28 07:38:01,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:01" (1/1) ... [2020-11-28 07:38:01,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:38:01,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:38:01,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:38:01,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:38:01,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/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 [2020-11-28 07:38:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:38:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:38:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:38:01,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:38:01,989 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-28 07:38:02,839 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-11-28 07:38:02,839 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-11-28 07:38:02,849 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:38:02,849 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:38:02,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:02 BoogieIcfgContainer [2020-11-28 07:38:02,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:38:02,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:38:02,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:38:02,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:38:02,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:38:01" (1/3) ... [2020-11-28 07:38:02,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339fd693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:02, skipping insertion in model container [2020-11-28 07:38:02,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:01" (2/3) ... [2020-11-28 07:38:02,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339fd693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:02, skipping insertion in model container [2020-11-28 07:38:02,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:02" (3/3) ... [2020-11-28 07:38:02,859 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2020-11-28 07:38:02,870 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:38:02,874 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:38:02,886 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:38:02,911 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:38:02,911 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:38:02,911 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:38:02,912 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:38:02,912 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:38:02,912 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:38:02,912 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:38:02,912 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:38:02,928 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-11-28 07:38:02,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 07:38:02,935 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:02,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:02,936 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:02,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:02,942 INFO L82 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2020-11-28 07:38:02,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:38:02,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166521544] [2020-11-28 07:38:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 07:38:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:03,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:38:03,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:03,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:03,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:03,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166521544] [2020-11-28 07:38:03,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:03,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 07:38:03,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817849993] [2020-11-28 07:38:03,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:03,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:38:03,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:03,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:03,257 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 3 states. [2020-11-28 07:38:03,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:03,582 INFO L93 Difference]: Finished difference Result 248 states and 424 transitions. [2020-11-28 07:38:03,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:03,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-28 07:38:03,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:03,597 INFO L225 Difference]: With dead ends: 248 [2020-11-28 07:38:03,597 INFO L226 Difference]: Without dead ends: 113 [2020-11-28 07:38:03,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:03,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-28 07:38:03,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-11-28 07:38:03,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-28 07:38:03,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2020-11-28 07:38:03,638 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2020-11-28 07:38:03,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:03,638 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2020-11-28 07:38:03,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:03,638 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2020-11-28 07:38:03,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-28 07:38:03,640 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:03,640 INFO L422 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, 1] [2020-11-28 07:38:03,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:38:03,853 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:03,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:03,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2020-11-28 07:38:03,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:38:03,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129190587] [2020-11-28 07:38:03,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 07:38:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:03,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:38:03,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:04,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:04,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129190587] [2020-11-28 07:38:04,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:04,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 07:38:04,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564871908] [2020-11-28 07:38:04,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:04,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:38:04,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:04,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:04,033 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand 3 states. [2020-11-28 07:38:04,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:04,241 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2020-11-28 07:38:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:04,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-11-28 07:38:04,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:04,245 INFO L225 Difference]: With dead ends: 233 [2020-11-28 07:38:04,245 INFO L226 Difference]: Without dead ends: 131 [2020-11-28 07:38:04,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:04,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-28 07:38:04,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-11-28 07:38:04,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-28 07:38:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2020-11-28 07:38:04,270 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2020-11-28 07:38:04,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:04,271 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2020-11-28 07:38:04,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:04,271 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2020-11-28 07:38:04,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-28 07:38:04,274 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:04,275 INFO L422 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, 1] [2020-11-28 07:38:04,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:38:04,490 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:04,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:04,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2020-11-28 07:38:04,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:38:04,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053446276] [2020-11-28 07:38:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 07:38:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:04,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:38:04,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:38:04,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:38:04,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053446276] [2020-11-28 07:38:04,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:04,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 07:38:04,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672224210] [2020-11-28 07:38:04,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:04,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:38:04,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:04,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:04,616 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand 3 states. [2020-11-28 07:38:04,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:04,647 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2020-11-28 07:38:04,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:04,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-11-28 07:38:04,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:04,650 INFO L225 Difference]: With dead ends: 271 [2020-11-28 07:38:04,650 INFO L226 Difference]: Without dead ends: 154 [2020-11-28 07:38:04,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:04,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-28 07:38:04,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-11-28 07:38:04,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-11-28 07:38:04,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2020-11-28 07:38:04,673 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2020-11-28 07:38:04,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:04,674 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2020-11-28 07:38:04,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:04,674 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2020-11-28 07:38:04,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-28 07:38:04,679 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:04,679 INFO L422 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, 1] [2020-11-28 07:38:04,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:38:04,898 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:04,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:04,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2020-11-28 07:38:04,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:38:04,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609215776] [2020-11-28 07:38:04,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 07:38:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:05,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:38:05,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:05,018 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:38:05,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:05,030 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:38:05,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609215776] [2020-11-28 07:38:05,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:05,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 07:38:05,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330697483] [2020-11-28 07:38:05,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:05,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:38:05,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:05,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:05,033 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand 3 states. [2020-11-28 07:38:05,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:05,244 INFO L93 Difference]: Finished difference Result 292 states and 435 transitions. [2020-11-28 07:38:05,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:05,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-11-28 07:38:05,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:05,247 INFO L225 Difference]: With dead ends: 292 [2020-11-28 07:38:05,247 INFO L226 Difference]: Without dead ends: 175 [2020-11-28 07:38:05,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:05,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-28 07:38:05,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2020-11-28 07:38:05,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-11-28 07:38:05,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2020-11-28 07:38:05,259 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2020-11-28 07:38:05,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:05,260 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2020-11-28 07:38:05,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:05,260 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2020-11-28 07:38:05,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-28 07:38:05,262 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:05,263 INFO L422 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, 1] [2020-11-28 07:38:05,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:38:05,482 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:05,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:05,483 INFO L82 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2020-11-28 07:38:05,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:38:05,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460094598] [2020-11-28 07:38:05,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-28 07:38:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:05,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:38:05,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 07:38:05,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:05,946 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 07:38:05,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460094598] [2020-11-28 07:38:05,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [567786057] [2020-11-28 07:38:05,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/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 [2020-11-28 07:38:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:06,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:38:06,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:06,233 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 07:38:06,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:06,332 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 07:38:06,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631182282] [2020-11-28 07:38:06,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:38:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:06,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:38:06,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 07:38:06,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 07:38:06,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-28 07:38:06,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2020-11-28 07:38:06,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889044690] [2020-11-28 07:38:06,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:38:06,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:38:06,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:38:06,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:38:06,588 INFO L87 Difference]: Start difference. First operand 171 states and 246 transitions. Second operand 6 states. [2020-11-28 07:38:07,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:07,382 INFO L93 Difference]: Finished difference Result 566 states and 848 transitions. [2020-11-28 07:38:07,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:38:07,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-11-28 07:38:07,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:07,387 INFO L225 Difference]: With dead ends: 566 [2020-11-28 07:38:07,387 INFO L226 Difference]: Without dead ends: 431 [2020-11-28 07:38:07,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 395 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:38:07,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-11-28 07:38:07,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 419. [2020-11-28 07:38:07,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-11-28 07:38:07,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 607 transitions. [2020-11-28 07:38:07,438 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 607 transitions. Word has length 68 [2020-11-28 07:38:07,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:07,440 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 607 transitions. [2020-11-28 07:38:07,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:38:07,440 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 607 transitions. [2020-11-28 07:38:07,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-28 07:38:07,452 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:07,452 INFO L422 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, 1] [2020-11-28 07:38:08,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:38:08,058 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:08,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:08,059 INFO L82 PathProgramCache]: Analyzing trace with hash 2031900493, now seen corresponding path program 1 times [2020-11-28 07:38:08,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:38:08,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137407958] [2020-11-28 07:38:08,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-28 07:38:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:08,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:38:08,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 07:38:08,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 07:38:08,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137407958] [2020-11-28 07:38:08,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:08,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 07:38:08,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136348317] [2020-11-28 07:38:08,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:08,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:38:08,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:08,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:08,208 INFO L87 Difference]: Start difference. First operand 419 states and 607 transitions. Second operand 3 states. [2020-11-28 07:38:08,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:08,261 INFO L93 Difference]: Finished difference Result 927 states and 1364 transitions. [2020-11-28 07:38:08,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:08,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-11-28 07:38:08,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:08,266 INFO L225 Difference]: With dead ends: 927 [2020-11-28 07:38:08,266 INFO L226 Difference]: Without dead ends: 574 [2020-11-28 07:38:08,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:08,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-11-28 07:38:08,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2020-11-28 07:38:08,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-11-28 07:38:08,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 835 transitions. [2020-11-28 07:38:08,291 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 835 transitions. Word has length 68 [2020-11-28 07:38:08,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:08,292 INFO L481 AbstractCegarLoop]: Abstraction has 572 states and 835 transitions. [2020-11-28 07:38:08,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:08,292 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 835 transitions. [2020-11-28 07:38:08,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-28 07:38:08,293 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:08,294 INFO L422 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, 1] [2020-11-28 07:38:08,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 07:38:08,514 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:08,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:08,514 INFO L82 PathProgramCache]: Analyzing trace with hash -875025075, now seen corresponding path program 1 times [2020-11-28 07:38:08,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:38:08,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163070965] [2020-11-28 07:38:08,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-28 07:38:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:08,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:38:08,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 07:38:08,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:08,663 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 07:38:08,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163070965] [2020-11-28 07:38:08,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:08,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 07:38:08,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819119861] [2020-11-28 07:38:08,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:08,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:38:08,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:08,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:08,673 INFO L87 Difference]: Start difference. First operand 572 states and 835 transitions. Second operand 3 states. [2020-11-28 07:38:08,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:08,711 INFO L93 Difference]: Finished difference Result 576 states and 837 transitions. [2020-11-28 07:38:08,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:08,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-11-28 07:38:08,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:08,716 INFO L225 Difference]: With dead ends: 576 [2020-11-28 07:38:08,716 INFO L226 Difference]: Without dead ends: 419 [2020-11-28 07:38:08,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:08,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-11-28 07:38:08,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 417. [2020-11-28 07:38:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-11-28 07:38:08,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 598 transitions. [2020-11-28 07:38:08,735 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 598 transitions. Word has length 68 [2020-11-28 07:38:08,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:08,737 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 598 transitions. [2020-11-28 07:38:08,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:08,738 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 598 transitions. [2020-11-28 07:38:08,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-28 07:38:08,739 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:08,739 INFO L422 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, 1] [2020-11-28 07:38:08,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-28 07:38:08,955 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:08,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:08,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1614503887, now seen corresponding path program 1 times [2020-11-28 07:38:08,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:38:08,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744354512] [2020-11-28 07:38:08,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-28 07:38:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:09,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 07:38:09,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:09,179 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:38:09,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:38:09,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744354512] [2020-11-28 07:38:09,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1981734958] [2020-11-28 07:38:09,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-28 07:38:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:09,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 07:38:09,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:09,488 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:38:09,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:38:09,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606221815] [2020-11-28 07:38:09,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:38:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:09,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:38:09,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 07:38:09,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-28 07:38:09,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-28 07:38:09,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7, 7, 4, 4] total 15 [2020-11-28 07:38:09,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061466611] [2020-11-28 07:38:09,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-28 07:38:09,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:38:09,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-28 07:38:09,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-11-28 07:38:09,792 INFO L87 Difference]: Start difference. First operand 417 states and 598 transitions. Second operand 15 states. [2020-11-28 07:38:12,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:12,354 INFO L93 Difference]: Finished difference Result 1191 states and 1790 transitions. [2020-11-28 07:38:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-28 07:38:12,355 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-11-28 07:38:12,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:12,360 INFO L225 Difference]: With dead ends: 1191 [2020-11-28 07:38:12,361 INFO L226 Difference]: Without dead ends: 831 [2020-11-28 07:38:12,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 389 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=237, Invalid=575, Unknown=0, NotChecked=0, Total=812 [2020-11-28 07:38:12,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-11-28 07:38:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 554. [2020-11-28 07:38:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-11-28 07:38:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 769 transitions. [2020-11-28 07:38:12,388 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 769 transitions. Word has length 68 [2020-11-28 07:38:12,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:12,389 INFO L481 AbstractCegarLoop]: Abstraction has 554 states and 769 transitions. [2020-11-28 07:38:12,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-28 07:38:12,389 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 769 transitions. [2020-11-28 07:38:12,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-28 07:38:12,390 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:12,390 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:12,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 mathsat -unsat_core_generation=3 [2020-11-28 07:38:12,998 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:13,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:13,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1844660206, now seen corresponding path program 1 times [2020-11-28 07:38:13,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:38:13,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590136668] [2020-11-28 07:38:13,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-11-28 07:38:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:13,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:38:13,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-28 07:38:13,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-28 07:38:13,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590136668] [2020-11-28 07:38:13,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:13,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 07:38:13,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93567113] [2020-11-28 07:38:13,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:38:13,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:38:13,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:38:13,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:13,134 INFO L87 Difference]: Start difference. First operand 554 states and 769 transitions. Second operand 3 states. [2020-11-28 07:38:13,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:13,367 INFO L93 Difference]: Finished difference Result 1090 states and 1537 transitions. [2020-11-28 07:38:13,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:38:13,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-11-28 07:38:13,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:13,372 INFO L225 Difference]: With dead ends: 1090 [2020-11-28 07:38:13,372 INFO L226 Difference]: Without dead ends: 602 [2020-11-28 07:38:13,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:38:13,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-11-28 07:38:13,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 596. [2020-11-28 07:38:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2020-11-28 07:38:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 821 transitions. [2020-11-28 07:38:13,399 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 821 transitions. Word has length 85 [2020-11-28 07:38:13,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:13,400 INFO L481 AbstractCegarLoop]: Abstraction has 596 states and 821 transitions. [2020-11-28 07:38:13,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:38:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 821 transitions. [2020-11-28 07:38:13,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-28 07:38:13,405 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:13,405 INFO L422 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] [2020-11-28 07:38:13,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-11-28 07:38:13,619 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:13,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:13,619 INFO L82 PathProgramCache]: Analyzing trace with hash 2022672797, now seen corresponding path program 1 times [2020-11-28 07:38:13,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:38:13,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537261179] [2020-11-28 07:38:13,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-11-28 07:38:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:13,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:38:13,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-28 07:38:13,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-28 07:38:13,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537261179] [2020-11-28 07:38:13,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:13,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:38:13,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041927495] [2020-11-28 07:38:13,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:13,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:38:13,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:13,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:13,775 INFO L87 Difference]: Start difference. First operand 596 states and 821 transitions. Second operand 4 states. [2020-11-28 07:38:13,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:13,876 INFO L93 Difference]: Finished difference Result 1702 states and 2351 transitions. [2020-11-28 07:38:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:13,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-11-28 07:38:13,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:13,889 INFO L225 Difference]: With dead ends: 1702 [2020-11-28 07:38:13,889 INFO L226 Difference]: Without dead ends: 1172 [2020-11-28 07:38:13,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:13,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2020-11-28 07:38:13,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1168. [2020-11-28 07:38:13,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2020-11-28 07:38:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1598 transitions. [2020-11-28 07:38:13,941 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1598 transitions. Word has length 104 [2020-11-28 07:38:13,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:13,942 INFO L481 AbstractCegarLoop]: Abstraction has 1168 states and 1598 transitions. [2020-11-28 07:38:13,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:13,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1598 transitions. [2020-11-28 07:38:13,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-28 07:38:13,944 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:13,944 INFO L422 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] [2020-11-28 07:38:14,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-11-28 07:38:14,160 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:14,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:14,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1888659291, now seen corresponding path program 1 times [2020-11-28 07:38:14,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:38:14,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388085072] [2020-11-28 07:38:14,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-11-28 07:38:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:38:14,278 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:38:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:38:14,357 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:38:14,586 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:38:14,586 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:38:14,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-11-28 07:38:14,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:38:14 BoogieIcfgContainer [2020-11-28 07:38:14,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:38:14,933 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:38:14,933 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:38:14,933 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:38:14,934 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:02" (3/4) ... [2020-11-28 07:38:14,936 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:38:15,054 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1304c638-57ac-4225-9ddb-a427ea3eafea/bin/utaipan/witness.graphml [2020-11-28 07:38:15,055 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:38:15,057 INFO L168 Benchmark]: Toolchain (without parser) took 13946.58 ms. Allocated memory was 62.9 MB in the beginning and 188.7 MB in the end (delta: 125.8 MB). Free memory was 43.2 MB in the beginning and 89.8 MB in the end (delta: -46.6 MB). Peak memory consumption was 77.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:15,057 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 45.1 MB in the end (delta: 33.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:15,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.80 ms. Allocated memory was 62.9 MB in the beginning and 88.1 MB in the end (delta: 25.2 MB). Free memory was 43.0 MB in the beginning and 71.1 MB in the end (delta: -28.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:15,058 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.82 ms. Allocated memory is still 88.1 MB. Free memory was 71.1 MB in the beginning and 68.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:15,059 INFO L168 Benchmark]: Boogie Preprocessor took 79.92 ms. Allocated memory is still 88.1 MB. Free memory was 68.7 MB in the beginning and 66.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:15,059 INFO L168 Benchmark]: RCFGBuilder took 1201.12 ms. Allocated memory is still 88.1 MB. Free memory was 66.6 MB in the beginning and 48.1 MB in the end (delta: 18.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:15,060 INFO L168 Benchmark]: TraceAbstraction took 12080.00 ms. Allocated memory was 88.1 MB in the beginning and 188.7 MB in the end (delta: 100.7 MB). Free memory was 47.7 MB in the beginning and 102.4 MB in the end (delta: -54.7 MB). Peak memory consumption was 45.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:15,060 INFO L168 Benchmark]: Witness Printer took 121.82 ms. Allocated memory is still 188.7 MB. Free memory was 102.4 MB in the beginning and 89.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:15,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 45.1 MB in the end (delta: 33.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 375.80 ms. Allocated memory was 62.9 MB in the beginning and 88.1 MB in the end (delta: 25.2 MB). Free memory was 43.0 MB in the beginning and 71.1 MB in the end (delta: -28.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.82 ms. Allocated memory is still 88.1 MB. Free memory was 71.1 MB in the beginning and 68.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.92 ms. Allocated memory is still 88.1 MB. Free memory was 68.7 MB in the beginning and 66.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1201.12 ms. Allocated memory is still 88.1 MB. Free memory was 66.6 MB in the beginning and 48.1 MB in the end (delta: 18.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12080.00 ms. Allocated memory was 88.1 MB in the beginning and 188.7 MB in the end (delta: 100.7 MB). Free memory was 47.7 MB in the beginning and 102.4 MB in the end (delta: -54.7 MB). Peak memory consumption was 45.0 MB. Max. memory is 16.1 GB. * Witness Printer took 121.82 ms. Allocated memory is still 188.7 MB. Free memory was 102.4 MB in the beginning and 89.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L625] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 ; [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate ; [L28] unsigned int s__ctx__stats__sess_connect ; [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags ; [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 ; [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y ; [L65] int ag_Z ; [L66] int __retres60 ; [L69] s__state = 12292 [L70] blastFlag = 0 [L71] tmp = __VERIFIER_nondet_int() [L72] cb = 0 [L73] ret = -1 [L74] skip = 0 [L75] tmp___0 = 0 [L76] COND TRUE s__info_callback != 0 [L77] cb = s__info_callback [L85] s__in_handshake = s__in_handshake + 1 [L86] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(\read(s__hit)) [L98] ag_Z = 48 [L101] COND TRUE 1 [L103] state = s__state [L104] COND TRUE s__state == 12292 [L207] s__new_session = 1 [L208] s__state = 4096 [L209] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L214] s__server = 0 [L215] COND TRUE cb != 0 [L220] COND FALSE !(s__version + 65280 != 768) [L226] s__type = 4096 [L227] COND FALSE !((unsigned long )s__init_buf___0 == (unsigned long )((void *)0)) [L245] COND FALSE !(! tmp___4) [L251] COND FALSE !(! tmp___5) [L257] s__state = 4368 [L258] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L259] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND TRUE s__state == 4368 [L263] s__shutdown = 0 [L264] ret = __VERIFIER_nondet_int() [L265] COND TRUE blastFlag == 0 [L266] blastFlag = 1 [L270] COND FALSE !(ret <= 0) [L275] s__state = 4384 [L276] ag_X = s__state - 32 [L277] s__init_num = 0 [L278] COND TRUE (unsigned long )s__bbio != (unsigned long )s__wbio [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND TRUE s__state == 4384 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L296] COND FALSE !(ret <= 0) [L301] s__state = ag_X [L302] COND FALSE !(\read(s__hit)) [L305] s__state = s__state | ag_Z [L307] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND TRUE s__state == 4400 [L311] COND TRUE (unsigned long )s__s3__tmp__new_cipher__algorithms + 256UL [L312] skip = 1 [L326] s__state = 4416 [L327] s__init_num = 0 [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND TRUE s__state == 4416 [L331] ret = __VERIFIER_nondet_int() [L332] COND FALSE !(blastFlag == 3) [L337] COND FALSE !(ret <= 0) [L342] s__state = 4432 [L343] s__init_num = 0 [L344] COND FALSE !(! tmp___6) [L574] COND FALSE !(! s__s3__tmp__reuse_message) [L603] skip = 0 [L101] COND TRUE 1 [L103] state = s__state [L104] COND FALSE !(s__state == 12292) [L107] COND FALSE !(s__state == 16384) [L110] COND FALSE !(s__state == 4096) [L113] COND FALSE !(s__state == 20480) [L116] COND FALSE !(s__state == 4099) [L119] COND FALSE !(s__state == 4368) [L122] COND FALSE !(s__state == 4369) [L125] COND FALSE !(s__state == 4384) [L128] COND FALSE !(s__state == 4385) [L131] COND FALSE !(s__state == 4400) [L134] COND FALSE !(s__state == 4401) [L137] COND FALSE !(s__state == 4416) [L140] COND FALSE !(s__state == 4417) [L143] COND TRUE s__state == 4432 [L353] ret = __VERIFIER_nondet_int() [L354] COND TRUE blastFlag <= 5 [L3] __assert_fail("0", "s3_clnt_3.BV.c.cil-2a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 127 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.8s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1815 SDtfs, 2493 SDslu, 2284 SDs, 0 SdLazy, 2104 SolverSat, 394 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1784 GetRequests, 1737 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1168occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 310 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 1001 NumberOfCodeBlocks, 1001 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1766 ConstructedInterpolants, 237 QuantifiedInterpolants, 424954 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1813 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 28 InterpolantComputations, 16 PerfectInterpolantSequences, 854/1156 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...