./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_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 01:59:50,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:59:50,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:59:50,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:59:50,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:59:50,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:59:50,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:59:50,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:59:50,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:59:50,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:59:50,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:59:50,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:59:50,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:59:50,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:59:50,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:59:50,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:59:50,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:59:50,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:59:50,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:59:50,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:59:50,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:59:50,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:59:50,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:59:50,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:59:50,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:59:50,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:59:50,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:59:50,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:59:50,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:59:50,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:59:50,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:59:50,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:59:50,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:59:50,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:59:50,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:59:50,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:59:50,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:59:50,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:59:50,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:59:50,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:59:50,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:59:50,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 01:59:50,772 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:59:50,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:59:50,774 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:59:50,774 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:59:50,775 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:59:50,775 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:59:50,775 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:59:50,775 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:59:50,776 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:59:50,776 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:59:50,777 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:59:50,777 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:59:50,778 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:59:50,778 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:59:50,778 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:59:50,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:59:50,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:59:50,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:59:50,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:59:50,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:59:50,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:59:50,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:59:50,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:59:50,781 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:59:50,789 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:59:50,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:59:50,790 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:59:50,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:59:50,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:59:50,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:59:50,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:59:50,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:59:50,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:59:50,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:59:50,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:59:50,792 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:59:50,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:59:50,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:59:50,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:59:50,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:59:50,793 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_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 [2020-11-30 01:59:51,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:59:51,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:59:51,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:59:51,085 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:59:51,086 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:59:51,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-11-30 01:59:51,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/data/e8be97221/e79ebbcdc5b0498eab486a17b06134e6/FLAGab7fb7631 [2020-11-30 01:59:51,627 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:59:51,627 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-11-30 01:59:51,693 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/data/e8be97221/e79ebbcdc5b0498eab486a17b06134e6/FLAGab7fb7631 [2020-11-30 01:59:51,968 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/data/e8be97221/e79ebbcdc5b0498eab486a17b06134e6 [2020-11-30 01:59:51,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:59:51,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:59:51,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:59:51,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:59:51,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:59:51,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:59:51" (1/1) ... [2020-11-30 01:59:51,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@422d5379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:51, skipping insertion in model container [2020-11-30 01:59:51,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:59:51" (1/1) ... [2020-11-30 01:59:51,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:59:52,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:59:52,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:59:52,274 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:59:52,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:59:52,354 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:59:52,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:52 WrapperNode [2020-11-30 01:59:52,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:59:52,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:59:52,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:59:52,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:59:52,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:52" (1/1) ... [2020-11-30 01:59:52,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:52" (1/1) ... [2020-11-30 01:59:52,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:59:52,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:59:52,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:59:52,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:59:52,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:52" (1/1) ... [2020-11-30 01:59:52,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:52" (1/1) ... [2020-11-30 01:59:52,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:52" (1/1) ... [2020-11-30 01:59:52,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:52" (1/1) ... [2020-11-30 01:59:52,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:52" (1/1) ... [2020-11-30 01:59:52,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:52" (1/1) ... [2020-11-30 01:59:52,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:52" (1/1) ... [2020-11-30 01:59:52,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:59:52,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:59:52,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:59:52,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:59:52,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 01:59:52,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:59:52,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:59:52,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:59:52,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:59:52,670 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-30 01:59:53,302 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-11-30 01:59:53,302 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-11-30 01:59:53,801 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:59:53,802 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 01:59:53,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:59:53 BoogieIcfgContainer [2020-11-30 01:59:53,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:59:53,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:59:53,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:59:53,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:59:53,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:59:51" (1/3) ... [2020-11-30 01:59:53,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bfe26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:59:53, skipping insertion in model container [2020-11-30 01:59:53,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:52" (2/3) ... [2020-11-30 01:59:53,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72bfe26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:59:53, skipping insertion in model container [2020-11-30 01:59:53,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:59:53" (3/3) ... [2020-11-30 01:59:53,814 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2020-11-30 01:59:53,828 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:59:53,833 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:59:53,844 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:59:53,883 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:59:53,883 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:59:53,883 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:59:53,884 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:59:53,884 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:59:53,884 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:59:53,884 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:59:53,884 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:59:53,902 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-11-30 01:59:53,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 01:59:53,908 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:59:53,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:59:53,909 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:59:53,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:59:53,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1372041888, now seen corresponding path program 1 times [2020-11-30 01:59:53,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:59:53,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853618058] [2020-11-30 01:59:53,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:59:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:59:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:59:54,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853618058] [2020-11-30 01:59:54,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:59:54,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:59:54,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008742939] [2020-11-30 01:59:54,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:59:54,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:59:54,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:59:54,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:59:54,145 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2020-11-30 01:59:54,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:59:54,316 INFO L93 Difference]: Finished difference Result 169 states and 293 transitions. [2020-11-30 01:59:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:59:54,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-30 01:59:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:59:54,328 INFO L225 Difference]: With dead ends: 169 [2020-11-30 01:59:54,328 INFO L226 Difference]: Without dead ends: 83 [2020-11-30 01:59:54,338 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 [2020-11-30 01:59:54,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-30 01:59:54,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-11-30 01:59:54,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-30 01:59:54,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2020-11-30 01:59:54,384 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 19 [2020-11-30 01:59:54,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:59:54,385 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2020-11-30 01:59:54,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:59:54,385 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2020-11-30 01:59:54,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 01:59:54,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:59:54,386 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] [2020-11-30 01:59:54,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:59:54,387 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:59:54,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:59:54,388 INFO L82 PathProgramCache]: Analyzing trace with hash -870646532, now seen corresponding path program 1 times [2020-11-30 01:59:54,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:59:54,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229246005] [2020-11-30 01:59:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:59:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:59:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:59:54,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229246005] [2020-11-30 01:59:54,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:59:54,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:59:54,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773661761] [2020-11-30 01:59:54,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:59:54,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:59:54,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:59:54,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:59:54,507 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand 3 states. [2020-11-30 01:59:54,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:59:54,689 INFO L93 Difference]: Finished difference Result 178 states and 261 transitions. [2020-11-30 01:59:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:59:54,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-11-30 01:59:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:59:54,691 INFO L225 Difference]: With dead ends: 178 [2020-11-30 01:59:54,692 INFO L226 Difference]: Without dead ends: 98 [2020-11-30 01:59:54,693 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 [2020-11-30 01:59:54,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-30 01:59:54,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-11-30 01:59:54,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-30 01:59:54,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 136 transitions. [2020-11-30 01:59:54,708 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 136 transitions. Word has length 28 [2020-11-30 01:59:54,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:59:54,708 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 136 transitions. [2020-11-30 01:59:54,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:59:54,708 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 136 transitions. [2020-11-30 01:59:54,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-30 01:59:54,734 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:59:54,734 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] [2020-11-30 01:59:54,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:59:54,735 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:59:54,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:59:54,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1162020225, now seen corresponding path program 1 times [2020-11-30 01:59:54,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:59:54,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698054854] [2020-11-30 01:59:54,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:59:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:59:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 01:59:54,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698054854] [2020-11-30 01:59:54,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:59:54,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:59:54,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58550463] [2020-11-30 01:59:54,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:59:54,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:59:54,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:59:54,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:59:54,874 INFO L87 Difference]: Start difference. First operand 96 states and 136 transitions. Second operand 3 states. [2020-11-30 01:59:55,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:59:55,051 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2020-11-30 01:59:55,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:59:55,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-11-30 01:59:55,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:59:55,053 INFO L225 Difference]: With dead ends: 206 [2020-11-30 01:59:55,054 INFO L226 Difference]: Without dead ends: 113 [2020-11-30 01:59:55,054 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 [2020-11-30 01:59:55,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-30 01:59:55,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2020-11-30 01:59:55,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-11-30 01:59:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 154 transitions. [2020-11-30 01:59:55,073 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 154 transitions. Word has length 39 [2020-11-30 01:59:55,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:59:55,074 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 154 transitions. [2020-11-30 01:59:55,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:59:55,074 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 154 transitions. [2020-11-30 01:59:55,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-30 01:59:55,079 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:59:55,079 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] [2020-11-30 01:59:55,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:59:55,080 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:59:55,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:59:55,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1731404066, now seen corresponding path program 1 times [2020-11-30 01:59:55,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:59:55,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754595195] [2020-11-30 01:59:55,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:59:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:59:55,186 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:59:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:59:55,282 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:59:55,328 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 01:59:55,329 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:59:55,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:59:55,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:59:55 BoogieIcfgContainer [2020-11-30 01:59:55,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:59:55,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:59:55,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:59:55,432 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:59:55,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:59:53" (3/4) ... [2020-11-30 01:59:55,435 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:59:55,435 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:59:55,439 INFO L168 Benchmark]: Toolchain (without parser) took 3464.41 ms. Allocated memory was 86.0 MB in the beginning and 132.1 MB in the end (delta: 46.1 MB). Free memory was 65.3 MB in the beginning and 60.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 50.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:55,440 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory was 61.4 MB in the beginning and 61.3 MB in the end (delta: 52.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:59:55,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.64 ms. Allocated memory is still 86.0 MB. Free memory was 65.1 MB in the beginning and 50.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:55,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.31 ms. Allocated memory is still 86.0 MB. Free memory was 50.6 MB in the beginning and 48.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:55,443 INFO L168 Benchmark]: Boogie Preprocessor took 54.11 ms. Allocated memory is still 86.0 MB. Free memory was 48.0 MB in the beginning and 46.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:55,446 INFO L168 Benchmark]: RCFGBuilder took 1334.34 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 45.8 MB in the beginning and 46.0 MB in the end (delta: -184.8 kB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:55,450 INFO L168 Benchmark]: TraceAbstraction took 1625.01 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 45.2 MB in the beginning and 61.8 MB in the end (delta: -16.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:59:55,450 INFO L168 Benchmark]: Witness Printer took 4.17 ms. Allocated memory is still 132.1 MB. Free memory was 61.8 MB in the beginning and 60.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:59:55,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory was 61.4 MB in the beginning and 61.3 MB in the end (delta: 52.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 381.64 ms. Allocated memory is still 86.0 MB. Free memory was 65.1 MB in the beginning and 50.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.31 ms. Allocated memory is still 86.0 MB. Free memory was 50.6 MB in the beginning and 48.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.11 ms. Allocated memory is still 86.0 MB. Free memory was 48.0 MB in the beginning and 46.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1334.34 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 45.8 MB in the beginning and 46.0 MB in the end (delta: -184.8 kB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1625.01 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 45.2 MB in the beginning and 61.8 MB in the end (delta: -16.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.17 ms. Allocated memory is still 132.1 MB. Free memory was 61.8 MB in the beginning and 60.7 MB in the end (delta: 1.0 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: 0.5s, 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, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 0.2s 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 [2020-11-30 01:59:57,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:59:57,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:59:57,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:59:57,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:59:57,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:59:57,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:59:57,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:59:57,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:59:57,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:59:57,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:59:57,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:59:57,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:59:57,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:59:57,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:59:57,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:59:57,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:59:57,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:59:58,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:59:58,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:59:58,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:59:58,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:59:58,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:59:58,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:59:58,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:59:58,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:59:58,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:59:58,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:59:58,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:59:58,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:59:58,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:59:58,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:59:58,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:59:58,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:59:58,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:59:58,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:59:58,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:59:58,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:59:58,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:59:58,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:59:58,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:59:58,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 01:59:58,085 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:59:58,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:59:58,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:59:58,087 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:59:58,088 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:59:58,088 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:59:58,088 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:59:58,088 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:59:58,088 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:59:58,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:59:58,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:59:58,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:59:58,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:59:58,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:59:58,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:59:58,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:59:58,092 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:59:58,092 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:59:58,092 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:59:58,092 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:59:58,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:59:58,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:59:58,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:59:58,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:59:58,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:59:58,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:59:58,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:59:58,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:59:58,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:59:58,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:59:58,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:59:58,095 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 01:59:58,095 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:59:58,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:59:58,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:59:58,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:59:58,096 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_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f963e087de2c8fcbc7f626f7e7b1f1088f7756c7 [2020-11-30 01:59:58,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:59:58,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:59:58,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:59:58,572 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:59:58,575 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:59:58,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-11-30 01:59:58,653 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/data/12001d26f/5ef03bc9660d4ce98d09aef3d2713acc/FLAGa8b3e78e8 [2020-11-30 01:59:59,289 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:59:59,290 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/sv-benchmarks/c/bitvector/s3_clnt_3.BV.c.cil-2a.c [2020-11-30 01:59:59,316 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/data/12001d26f/5ef03bc9660d4ce98d09aef3d2713acc/FLAGa8b3e78e8 [2020-11-30 01:59:59,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/data/12001d26f/5ef03bc9660d4ce98d09aef3d2713acc [2020-11-30 01:59:59,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:59:59,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:59:59,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:59:59,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:59:59,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:59:59,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:59:59" (1/1) ... [2020-11-30 01:59:59,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63faae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:59:59, skipping insertion in model container [2020-11-30 01:59:59,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:59:59" (1/1) ... [2020-11-30 01:59:59,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:59:59,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:59:59,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:59:59,915 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:00:00,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:00:00,039 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:00:00,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:00 WrapperNode [2020-11-30 02:00:00,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:00:00,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:00:00,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:00:00,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:00:00,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:00" (1/1) ... [2020-11-30 02:00:00,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:00" (1/1) ... [2020-11-30 02:00:00,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:00:00,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:00:00,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:00:00,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:00:00,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:00" (1/1) ... [2020-11-30 02:00:00,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:00" (1/1) ... [2020-11-30 02:00:00,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:00" (1/1) ... [2020-11-30 02:00:00,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:00" (1/1) ... [2020-11-30 02:00:00,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:00" (1/1) ... [2020-11-30 02:00:00,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:00" (1/1) ... [2020-11-30 02:00:00,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:00" (1/1) ... [2020-11-30 02:00:00,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:00:00,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:00:00,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:00:00,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:00:00,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 02:00:00,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 02:00:00,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:00:00,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:00:00,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:00:00,489 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-30 02:00:01,291 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-11-30 02:00:01,291 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-11-30 02:00:01,299 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:00:01,300 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:00:01,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:00:01 BoogieIcfgContainer [2020-11-30 02:00:01,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:00:01,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:00:01,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:00:01,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:00:01,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:59:59" (1/3) ... [2020-11-30 02:00:01,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a60c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:00:01, skipping insertion in model container [2020-11-30 02:00:01,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:00:00" (2/3) ... [2020-11-30 02:00:01,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a60c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:00:01, skipping insertion in model container [2020-11-30 02:00:01,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:00:01" (3/3) ... [2020-11-30 02:00:01,310 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.BV.c.cil-2a.c [2020-11-30 02:00:01,320 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:00:01,325 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:00:01,337 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:00:01,361 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:00:01,362 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:00:01,362 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:00:01,362 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:00:01,362 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:00:01,362 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:00:01,362 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:00:01,362 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:00:01,378 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-11-30 02:00:01,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 02:00:01,385 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:01,386 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] [2020-11-30 02:00:01,386 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:00:01,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:01,392 INFO L82 PathProgramCache]: Analyzing trace with hash 259999105, now seen corresponding path program 1 times [2020-11-30 02:00:01,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:00:01,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651969263] [2020-11-30 02:00:01,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 02:00:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:01,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:00:01,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:01,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:01,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651969263] [2020-11-30 02:00:01,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:00:01,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 02:00:01,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582848031] [2020-11-30 02:00:01,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:00:01,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:00:01,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:00:01,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:00:01,672 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 3 states. [2020-11-30 02:00:01,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:01,960 INFO L93 Difference]: Finished difference Result 248 states and 424 transitions. [2020-11-30 02:00:01,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:00:01,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-30 02:00:01,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:01,977 INFO L225 Difference]: With dead ends: 248 [2020-11-30 02:00:01,977 INFO L226 Difference]: Without dead ends: 113 [2020-11-30 02:00:01,981 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 [2020-11-30 02:00:01,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-30 02:00:02,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-11-30 02:00:02,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-30 02:00:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 171 transitions. [2020-11-30 02:00:02,041 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 171 transitions. Word has length 25 [2020-11-30 02:00:02,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:02,042 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 171 transitions. [2020-11-30 02:00:02,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:00:02,042 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 171 transitions. [2020-11-30 02:00:02,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-30 02:00:02,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:02,046 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] [2020-11-30 02:00:02,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:00:02,263 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:00:02,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:02,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1138040513, now seen corresponding path program 1 times [2020-11-30 02:00:02,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:00:02,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499927036] [2020-11-30 02:00:02,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 02:00:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:02,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:00:02,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:02,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:00:02,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499927036] [2020-11-30 02:00:02,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:00:02,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 02:00:02,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517798321] [2020-11-30 02:00:02,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:00:02,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:00:02,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:00:02,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:00:02,424 INFO L87 Difference]: Start difference. First operand 113 states and 171 transitions. Second operand 3 states. [2020-11-30 02:00:02,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:02,654 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2020-11-30 02:00:02,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:00:02,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-11-30 02:00:02,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:02,657 INFO L225 Difference]: With dead ends: 233 [2020-11-30 02:00:02,658 INFO L226 Difference]: Without dead ends: 131 [2020-11-30 02:00:02,659 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 [2020-11-30 02:00:02,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-30 02:00:02,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-11-30 02:00:02,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-30 02:00:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2020-11-30 02:00:02,669 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 37 [2020-11-30 02:00:02,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:02,669 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2020-11-30 02:00:02,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:00:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2020-11-30 02:00:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-30 02:00:02,671 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:02,672 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] [2020-11-30 02:00:02,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:00:02,888 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:00:02,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:02,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1126420040, now seen corresponding path program 1 times [2020-11-30 02:00:02,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:00:02,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242965535] [2020-11-30 02:00:02,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 02:00:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:02,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:00:02,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 02:00:03,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 02:00:03,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242965535] [2020-11-30 02:00:03,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:00:03,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 02:00:03,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561655401] [2020-11-30 02:00:03,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:00:03,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:00:03,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:00:03,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:00:03,030 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand 3 states. [2020-11-30 02:00:03,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:03,063 INFO L93 Difference]: Finished difference Result 271 states and 400 transitions. [2020-11-30 02:00:03,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:00:03,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-11-30 02:00:03,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:03,066 INFO L225 Difference]: With dead ends: 271 [2020-11-30 02:00:03,066 INFO L226 Difference]: Without dead ends: 154 [2020-11-30 02:00:03,067 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 [2020-11-30 02:00:03,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-30 02:00:03,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-11-30 02:00:03,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-11-30 02:00:03,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2020-11-30 02:00:03,079 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 51 [2020-11-30 02:00:03,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:03,079 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2020-11-30 02:00:03,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:00:03,079 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2020-11-30 02:00:03,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-30 02:00:03,081 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:03,082 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] [2020-11-30 02:00:03,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 02:00:03,301 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:00:03,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:03,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1260433546, now seen corresponding path program 1 times [2020-11-30 02:00:03,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:00:03,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253938185] [2020-11-30 02:00:03,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 02:00:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:03,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:00:03,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 02:00:03,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:03,455 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 02:00:03,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253938185] [2020-11-30 02:00:03,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:00:03,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 02:00:03,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661269053] [2020-11-30 02:00:03,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:00:03,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:00:03,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:00:03,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:00:03,464 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand 3 states. [2020-11-30 02:00:03,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:03,695 INFO L93 Difference]: Finished difference Result 292 states and 435 transitions. [2020-11-30 02:00:03,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:00:03,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-11-30 02:00:03,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:03,698 INFO L225 Difference]: With dead ends: 292 [2020-11-30 02:00:03,698 INFO L226 Difference]: Without dead ends: 175 [2020-11-30 02:00:03,699 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 [2020-11-30 02:00:03,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-30 02:00:03,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2020-11-30 02:00:03,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-11-30 02:00:03,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 246 transitions. [2020-11-30 02:00:03,710 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 246 transitions. Word has length 51 [2020-11-30 02:00:03,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:03,710 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 246 transitions. [2020-11-30 02:00:03,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:00:03,710 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 246 transitions. [2020-11-30 02:00:03,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-30 02:00:03,713 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:03,714 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] [2020-11-30 02:00:03,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 02:00:03,930 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:00:03,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:03,930 INFO L82 PathProgramCache]: Analyzing trace with hash -457628469, now seen corresponding path program 1 times [2020-11-30 02:00:03,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:00:03,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303147963] [2020-11-30 02:00:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 02:00:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:04,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:00:04,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 02:00:04,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:04,314 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 02:00:04,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303147963] [2020-11-30 02:00:04,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [207784776] [2020-11-30 02:00:04,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 02:00:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:04,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:00:04,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 02:00:04,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 02:00:04,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425459288] [2020-11-30 02:00:04,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 02:00:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:04,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:00:04,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 02:00:04,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 02:00:04,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 02:00:04,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2020-11-30 02:00:04,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220612195] [2020-11-30 02:00:04,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:00:04,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:00:04,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:00:04,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:00:04,907 INFO L87 Difference]: Start difference. First operand 171 states and 246 transitions. Second operand 6 states. [2020-11-30 02:00:05,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:05,663 INFO L93 Difference]: Finished difference Result 566 states and 848 transitions. [2020-11-30 02:00:05,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:00:05,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-11-30 02:00:05,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:05,667 INFO L225 Difference]: With dead ends: 566 [2020-11-30 02:00:05,667 INFO L226 Difference]: Without dead ends: 431 [2020-11-30 02:00:05,668 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 [2020-11-30 02:00:05,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-11-30 02:00:05,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 419. [2020-11-30 02:00:05,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-11-30 02:00:05,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 607 transitions. [2020-11-30 02:00:05,698 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 607 transitions. Word has length 68 [2020-11-30 02:00:05,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:05,707 INFO L481 AbstractCegarLoop]: Abstraction has 419 states and 607 transitions. [2020-11-30 02:00:05,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:00:05,708 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 607 transitions. [2020-11-30 02:00:05,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-30 02:00:05,712 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:05,712 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] [2020-11-30 02:00:06,317 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 [2020-11-30 02:00:06,317 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:00:06,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:06,317 INFO L82 PathProgramCache]: Analyzing trace with hash 2031900493, now seen corresponding path program 1 times [2020-11-30 02:00:06,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:00:06,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753429398] [2020-11-30 02:00:06,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 02:00:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:06,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:00:06,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 02:00:06,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:06,482 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 02:00:06,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753429398] [2020-11-30 02:00:06,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:00:06,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 02:00:06,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667464308] [2020-11-30 02:00:06,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:00:06,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:00:06,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:00:06,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:00:06,496 INFO L87 Difference]: Start difference. First operand 419 states and 607 transitions. Second operand 3 states. [2020-11-30 02:00:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:06,550 INFO L93 Difference]: Finished difference Result 927 states and 1364 transitions. [2020-11-30 02:00:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:00:06,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-11-30 02:00:06,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:06,556 INFO L225 Difference]: With dead ends: 927 [2020-11-30 02:00:06,556 INFO L226 Difference]: Without dead ends: 574 [2020-11-30 02:00:06,558 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 [2020-11-30 02:00:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-11-30 02:00:06,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2020-11-30 02:00:06,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2020-11-30 02:00:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 835 transitions. [2020-11-30 02:00:06,591 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 835 transitions. Word has length 68 [2020-11-30 02:00:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:06,592 INFO L481 AbstractCegarLoop]: Abstraction has 572 states and 835 transitions. [2020-11-30 02:00:06,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:00:06,592 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 835 transitions. [2020-11-30 02:00:06,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-30 02:00:06,593 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:06,594 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] [2020-11-30 02:00:06,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 02:00:06,804 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:00:06,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:06,804 INFO L82 PathProgramCache]: Analyzing trace with hash -875025075, now seen corresponding path program 1 times [2020-11-30 02:00:06,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:00:06,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432628695] [2020-11-30 02:00:06,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 02:00:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:06,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:00:06,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 02:00:06,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 02:00:06,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432628695] [2020-11-30 02:00:06,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:00:06,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 02:00:06,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859045211] [2020-11-30 02:00:06,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:00:06,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:00:06,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:00:06,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:00:06,952 INFO L87 Difference]: Start difference. First operand 572 states and 835 transitions. Second operand 3 states. [2020-11-30 02:00:06,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:06,990 INFO L93 Difference]: Finished difference Result 576 states and 837 transitions. [2020-11-30 02:00:06,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:00:06,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-11-30 02:00:06,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:06,994 INFO L225 Difference]: With dead ends: 576 [2020-11-30 02:00:06,994 INFO L226 Difference]: Without dead ends: 419 [2020-11-30 02:00:06,995 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 [2020-11-30 02:00:06,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-11-30 02:00:07,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 417. [2020-11-30 02:00:07,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-11-30 02:00:07,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 598 transitions. [2020-11-30 02:00:07,010 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 598 transitions. Word has length 68 [2020-11-30 02:00:07,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:07,011 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 598 transitions. [2020-11-30 02:00:07,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:00:07,011 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 598 transitions. [2020-11-30 02:00:07,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-30 02:00:07,012 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:07,013 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] [2020-11-30 02:00:07,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-30 02:00:07,229 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:00:07,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:07,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1614503887, now seen corresponding path program 1 times [2020-11-30 02:00:07,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:00:07,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404530] [2020-11-30 02:00:07,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 02:00:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:07,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 02:00:07,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 02:00:07,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 02:00:07,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404530] [2020-11-30 02:00:07,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1699273754] [2020-11-30 02:00:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 02:00:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:07,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 02:00:07,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 02:00:07,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 02:00:07,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577686225] [2020-11-30 02:00:07,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 02:00:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:07,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:00:07,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 02:00:07,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 02:00:08,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 02:00:08,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7, 7, 4, 4] total 15 [2020-11-30 02:00:08,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798214458] [2020-11-30 02:00:08,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 02:00:08,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:00:08,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 02:00:08,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-11-30 02:00:08,051 INFO L87 Difference]: Start difference. First operand 417 states and 598 transitions. Second operand 15 states. [2020-11-30 02:00:10,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:10,328 INFO L93 Difference]: Finished difference Result 1191 states and 1790 transitions. [2020-11-30 02:00:10,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-30 02:00:10,329 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-11-30 02:00:10,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:10,334 INFO L225 Difference]: With dead ends: 1191 [2020-11-30 02:00:10,334 INFO L226 Difference]: Without dead ends: 831 [2020-11-30 02:00:10,342 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 [2020-11-30 02:00:10,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-11-30 02:00:10,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 554. [2020-11-30 02:00:10,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-11-30 02:00:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 769 transitions. [2020-11-30 02:00:10,372 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 769 transitions. Word has length 68 [2020-11-30 02:00:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:10,372 INFO L481 AbstractCegarLoop]: Abstraction has 554 states and 769 transitions. [2020-11-30 02:00:10,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 02:00:10,373 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 769 transitions. [2020-11-30 02:00:10,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-30 02:00:10,374 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:10,374 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] [2020-11-30 02:00:10,980 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 [2020-11-30 02:00:10,980 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:00:10,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:10,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1844660206, now seen corresponding path program 1 times [2020-11-30 02:00:10,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:00:10,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97944522] [2020-11-30 02:00:10,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 02:00:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:11,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:00:11,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-30 02:00:11,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-30 02:00:11,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97944522] [2020-11-30 02:00:11,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:00:11,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 02:00:11,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630546925] [2020-11-30 02:00:11,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:00:11,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:00:11,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:00:11,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:00:11,113 INFO L87 Difference]: Start difference. First operand 554 states and 769 transitions. Second operand 3 states. [2020-11-30 02:00:11,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:11,337 INFO L93 Difference]: Finished difference Result 1090 states and 1537 transitions. [2020-11-30 02:00:11,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:00:11,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-11-30 02:00:11,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:11,342 INFO L225 Difference]: With dead ends: 1090 [2020-11-30 02:00:11,342 INFO L226 Difference]: Without dead ends: 602 [2020-11-30 02:00:11,343 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 [2020-11-30 02:00:11,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-11-30 02:00:11,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 596. [2020-11-30 02:00:11,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2020-11-30 02:00:11,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 821 transitions. [2020-11-30 02:00:11,369 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 821 transitions. Word has length 85 [2020-11-30 02:00:11,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:11,370 INFO L481 AbstractCegarLoop]: Abstraction has 596 states and 821 transitions. [2020-11-30 02:00:11,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:00:11,370 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 821 transitions. [2020-11-30 02:00:11,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-30 02:00:11,371 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:11,372 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] [2020-11-30 02:00:11,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-11-30 02:00:11,588 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:00:11,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:11,588 INFO L82 PathProgramCache]: Analyzing trace with hash 2022672797, now seen corresponding path program 1 times [2020-11-30 02:00:11,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:00:11,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842255332] [2020-11-30 02:00:11,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 02:00:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:00:11,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:00:11,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:00:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-30 02:00:11,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:00:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-30 02:00:11,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842255332] [2020-11-30 02:00:11,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:00:11,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 02:00:11,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516911204] [2020-11-30 02:00:11,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:00:11,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:00:11,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:00:11,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:00:11,760 INFO L87 Difference]: Start difference. First operand 596 states and 821 transitions. Second operand 4 states. [2020-11-30 02:00:11,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:00:11,867 INFO L93 Difference]: Finished difference Result 1702 states and 2351 transitions. [2020-11-30 02:00:11,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:00:11,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-11-30 02:00:11,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:00:11,881 INFO L225 Difference]: With dead ends: 1702 [2020-11-30 02:00:11,881 INFO L226 Difference]: Without dead ends: 1172 [2020-11-30 02:00:11,882 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 [2020-11-30 02:00:11,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2020-11-30 02:00:11,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1168. [2020-11-30 02:00:11,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2020-11-30 02:00:11,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1598 transitions. [2020-11-30 02:00:11,923 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1598 transitions. Word has length 104 [2020-11-30 02:00:11,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:00:11,924 INFO L481 AbstractCegarLoop]: Abstraction has 1168 states and 1598 transitions. [2020-11-30 02:00:11,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:00:11,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1598 transitions. [2020-11-30 02:00:11,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-30 02:00:11,926 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:00:11,926 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] [2020-11-30 02:00:12,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-11-30 02:00:12,142 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:00:12,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:00:12,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1888659291, now seen corresponding path program 1 times [2020-11-30 02:00:12,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:00:12,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498695716] [2020-11-30 02:00:12,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/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 [2020-11-30 02:00:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:00:12,259 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:00:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:00:12,340 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:00:12,574 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-30 02:00:12,574 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:00:12,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-11-30 02:00:12,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:00:12 BoogieIcfgContainer [2020-11-30 02:00:12,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:00:12,938 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:00:12,938 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:00:12,938 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:00:12,938 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:00:01" (3/4) ... [2020-11-30 02:00:12,939 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 02:00:13,060 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_95bd0c2a-ac52-4ae8-9ce8-285d0dbd63ae/bin/utaipan/witness.graphml [2020-11-30 02:00:13,061 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:00:13,063 INFO L168 Benchmark]: Toolchain (without parser) took 13481.57 ms. Allocated memory was 58.7 MB in the beginning and 172.0 MB in the end (delta: 113.2 MB). Free memory was 38.7 MB in the beginning and 78.1 MB in the end (delta: -39.4 MB). Peak memory consumption was 72.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:00:13,063 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 58.7 MB. Free memory is still 40.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:00:13,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.20 ms. Allocated memory is still 58.7 MB. Free memory was 38.6 MB in the beginning and 39.4 MB in the end (delta: -796.7 kB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:00:13,065 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.79 ms. Allocated memory is still 58.7 MB. Free memory was 39.2 MB in the beginning and 36.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:00:13,066 INFO L168 Benchmark]: Boogie Preprocessor took 38.44 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 34.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:00:13,069 INFO L168 Benchmark]: RCFGBuilder took 1171.88 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 34.6 MB in the beginning and 50.8 MB in the end (delta: -16.2 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:00:13,070 INFO L168 Benchmark]: TraceAbstraction took 11633.88 ms. Allocated memory was 79.7 MB in the beginning and 172.0 MB in the end (delta: 92.3 MB). Free memory was 50.4 MB in the beginning and 90.7 MB in the end (delta: -40.3 MB). Peak memory consumption was 51.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:00:13,070 INFO L168 Benchmark]: Witness Printer took 123.23 ms. Allocated memory is still 172.0 MB. Free memory was 90.7 MB in the beginning and 78.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:00:13,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 58.7 MB. Free memory is still 40.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 459.20 ms. Allocated memory is still 58.7 MB. Free memory was 38.6 MB in the beginning and 39.4 MB in the end (delta: -796.7 kB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.79 ms. Allocated memory is still 58.7 MB. Free memory was 39.2 MB in the beginning and 36.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.44 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 34.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1171.88 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 34.6 MB in the beginning and 50.8 MB in the end (delta: -16.2 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11633.88 ms. Allocated memory was 79.7 MB in the beginning and 172.0 MB in the end (delta: 92.3 MB). Free memory was 50.4 MB in the beginning and 90.7 MB in the end (delta: -40.3 MB). Peak memory consumption was 51.9 MB. Max. memory is 16.1 GB. * Witness Printer took 123.23 ms. Allocated memory is still 172.0 MB. Free memory was 90.7 MB in the beginning and 78.1 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: 11.4s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 4.3s, 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, 2.8s 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, 1.3s 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...