./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/s3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/s3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d053be7ac759c4172c4b0b5fbe009ed8f624c0c8659eb750e9996926d5d3b0a1 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:40:13,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:40:13,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:40:13,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:40:13,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:40:13,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:40:13,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:40:13,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:40:13,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:40:13,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:40:13,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:40:13,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:40:13,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:40:13,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:40:13,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:40:13,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:40:13,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:40:13,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:40:13,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:40:13,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:40:13,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:40:13,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:40:13,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:40:13,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:40:13,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:40:13,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:40:13,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:40:13,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:40:13,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:40:13,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:40:13,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:40:13,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:40:13,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:40:13,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:40:13,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:40:13,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:40:13,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:40:13,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:40:13,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:40:13,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:40:13,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:40:13,992 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:40:14,015 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:40:14,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:40:14,016 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:40:14,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:40:14,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:40:14,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:40:14,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:40:14,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:40:14,018 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:40:14,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:40:14,018 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:40:14,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:40:14,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:40:14,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:40:14,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:40:14,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:40:14,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:40:14,019 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:40:14,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:40:14,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:40:14,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:40:14,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:40:14,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:40:14,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:40:14,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:40:14,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:40:14,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:40:14,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:40:14,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:40:14,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:40:14,021 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:40:14,021 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:40:14,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:40:14,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:40:14,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d053be7ac759c4172c4b0b5fbe009ed8f624c0c8659eb750e9996926d5d3b0a1 [2021-12-06 23:40:14,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:40:14,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:40:14,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:40:14,216 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:40:14,216 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:40:14,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/loops/s3.i [2021-12-06 23:40:14,266 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/data/63a1e2eef/d0602ef87f494cd6949d78ef9e1ff59c/FLAG966a66f79 [2021-12-06 23:40:14,703 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:40:14,703 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/sv-benchmarks/c/loops/s3.i [2021-12-06 23:40:14,716 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/data/63a1e2eef/d0602ef87f494cd6949d78ef9e1ff59c/FLAG966a66f79 [2021-12-06 23:40:14,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/data/63a1e2eef/d0602ef87f494cd6949d78ef9e1ff59c [2021-12-06 23:40:14,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:40:14,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:40:14,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:40:14,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:40:14,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:40:14,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:40:14" (1/1) ... [2021-12-06 23:40:14,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1890a604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:40:14, skipping insertion in model container [2021-12-06 23:40:14,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:40:14" (1/1) ... [2021-12-06 23:40:14,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:40:14,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:40:15,036 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-12-06 23:40:15,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:40:15,052 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:40:15,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-12-06 23:40:15,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:40:15,135 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:40:15,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:40:15 WrapperNode [2021-12-06 23:40:15,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:40:15,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:40:15,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:40:15,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:40:15,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:40:15" (1/1) ... [2021-12-06 23:40:15,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:40:15" (1/1) ... [2021-12-06 23:40:15,212 INFO L137 Inliner]: procedures = 30, calls = 222, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 732 [2021-12-06 23:40:15,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:40:15,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:40:15,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:40:15,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:40:15,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:40:15" (1/1) ... [2021-12-06 23:40:15,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:40:15" (1/1) ... [2021-12-06 23:40:15,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:40:15" (1/1) ... [2021-12-06 23:40:15,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:40:15" (1/1) ... [2021-12-06 23:40:15,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:40:15" (1/1) ... [2021-12-06 23:40:15,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:40:15" (1/1) ... [2021-12-06 23:40:15,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:40:15" (1/1) ... [2021-12-06 23:40:15,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:40:15,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:40:15,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:40:15,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:40:15,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:40:15" (1/1) ... [2021-12-06 23:40:15,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:40:15,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:40:15,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:40:15,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:40:15,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:40:15,494 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:40:15,495 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:40:15,514 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 23:40:18,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-12-06 23:40:18,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-12-06 23:40:18,162 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:40:18,170 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:40:18,170 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 23:40:18,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:40:18 BoogieIcfgContainer [2021-12-06 23:40:18,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:40:18,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:40:18,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:40:18,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:40:18,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:40:14" (1/3) ... [2021-12-06 23:40:18,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3c619c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:40:18, skipping insertion in model container [2021-12-06 23:40:18,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:40:15" (2/3) ... [2021-12-06 23:40:18,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3c619c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:40:18, skipping insertion in model container [2021-12-06 23:40:18,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:40:18" (3/3) ... [2021-12-06 23:40:18,181 INFO L111 eAbstractionObserver]: Analyzing ICFG s3.i [2021-12-06 23:40:18,186 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:40:18,187 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:40:18,237 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:40:18,244 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:40:18,244 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:40:18,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:18,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 23:40:18,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:18,264 INFO L514 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] [2021-12-06 23:40:18,264 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:18,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:18,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1457703967, now seen corresponding path program 1 times [2021-12-06 23:40:18,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:18,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221856118] [2021-12-06 23:40:18,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:18,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:18,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:40:18,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:18,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221856118] [2021-12-06 23:40:18,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221856118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:18,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:18,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:40:18,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894299024] [2021-12-06 23:40:18,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:18,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:40:18,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:18,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:40:18,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:40:18,700 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:18,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:18,768 INFO L93 Difference]: Finished difference Result 375 states and 626 transitions. [2021-12-06 23:40:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:40:18,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-06 23:40:18,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:18,783 INFO L225 Difference]: With dead ends: 375 [2021-12-06 23:40:18,784 INFO L226 Difference]: Without dead ends: 217 [2021-12-06 23:40:18,787 INFO L932 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 [2021-12-06 23:40:18,791 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 181 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:18,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 402 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:40:18,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-06 23:40:18,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-12-06 23:40:18,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.4861111111111112) internal successors, (321), 216 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:18,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 321 transitions. [2021-12-06 23:40:18,844 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 321 transitions. Word has length 24 [2021-12-06 23:40:18,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:18,845 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 321 transitions. [2021-12-06 23:40:18,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:18,845 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 321 transitions. [2021-12-06 23:40:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 23:40:18,847 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:18,848 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 23:40:18,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:40:18,848 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:18,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:18,849 INFO L85 PathProgramCache]: Analyzing trace with hash 546953675, now seen corresponding path program 1 times [2021-12-06 23:40:18,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:18,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259296267] [2021-12-06 23:40:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:18,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:40:19,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:19,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259296267] [2021-12-06 23:40:19,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259296267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:19,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:19,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:40:19,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059696546] [2021-12-06 23:40:19,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:19,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:40:19,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:40:19,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:40:19,039 INFO L87 Difference]: Start difference. First operand 217 states and 321 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:21,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:21,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:21,341 INFO L93 Difference]: Finished difference Result 612 states and 909 transitions. [2021-12-06 23:40:21,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:40:21,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-12-06 23:40:21,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:21,345 INFO L225 Difference]: With dead ends: 612 [2021-12-06 23:40:21,345 INFO L226 Difference]: Without dead ends: 402 [2021-12-06 23:40:21,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:40:21,347 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 107 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:21,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 271 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 210 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 23:40:21,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-12-06 23:40:21,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 265. [2021-12-06 23:40:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.5340909090909092) internal successors, (405), 264 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 405 transitions. [2021-12-06 23:40:21,364 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 405 transitions. Word has length 39 [2021-12-06 23:40:21,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:21,364 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 405 transitions. [2021-12-06 23:40:21,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:21,365 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 405 transitions. [2021-12-06 23:40:21,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 23:40:21,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:21,367 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 23:40:21,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:40:21,367 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:21,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:21,367 INFO L85 PathProgramCache]: Analyzing trace with hash -228723188, now seen corresponding path program 1 times [2021-12-06 23:40:21,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:21,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338758706] [2021-12-06 23:40:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:21,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:21,470 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:40:21,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:21,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338758706] [2021-12-06 23:40:21,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338758706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:21,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:21,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:40:21,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915232783] [2021-12-06 23:40:21,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:21,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:40:21,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:21,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:40:21,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:40:21,472 INFO L87 Difference]: Start difference. First operand 265 states and 405 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:23,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:23,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:23,761 INFO L93 Difference]: Finished difference Result 708 states and 1077 transitions. [2021-12-06 23:40:23,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:40:23,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-12-06 23:40:23,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:23,764 INFO L225 Difference]: With dead ends: 708 [2021-12-06 23:40:23,765 INFO L226 Difference]: Without dead ends: 450 [2021-12-06 23:40:23,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:40:23,767 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 107 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:23,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 270 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 209 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 23:40:23,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-12-06 23:40:23,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 315. [2021-12-06 23:40:23,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.570063694267516) internal successors, (493), 314 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:23,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 493 transitions. [2021-12-06 23:40:23,783 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 493 transitions. Word has length 40 [2021-12-06 23:40:23,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:23,783 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 493 transitions. [2021-12-06 23:40:23,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 493 transitions. [2021-12-06 23:40:23,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 23:40:23,785 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:23,785 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 23:40:23,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:40:23,786 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:23,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:23,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1495258694, now seen corresponding path program 1 times [2021-12-06 23:40:23,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:23,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483870248] [2021-12-06 23:40:23,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:23,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:40:23,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:23,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483870248] [2021-12-06 23:40:23,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483870248] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:23,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:23,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:40:23,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250714814] [2021-12-06 23:40:23,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:23,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:40:23,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:23,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:40:23,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:40:23,906 INFO L87 Difference]: Start difference. First operand 315 states and 493 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:25,923 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:26,158 INFO L93 Difference]: Finished difference Result 808 states and 1249 transitions. [2021-12-06 23:40:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:40:26,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-12-06 23:40:26,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:26,161 INFO L225 Difference]: With dead ends: 808 [2021-12-06 23:40:26,161 INFO L226 Difference]: Without dead ends: 500 [2021-12-06 23:40:26,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:40:26,162 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 105 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:26,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 270 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 210 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-12-06 23:40:26,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-12-06 23:40:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 367. [2021-12-06 23:40:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.5874316939890711) internal successors, (581), 366 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:26,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 581 transitions. [2021-12-06 23:40:26,174 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 581 transitions. Word has length 41 [2021-12-06 23:40:26,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:26,174 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 581 transitions. [2021-12-06 23:40:26,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:26,174 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 581 transitions. [2021-12-06 23:40:26,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 23:40:26,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:26,176 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 23:40:26,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 23:40:26,176 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:26,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:26,177 INFO L85 PathProgramCache]: Analyzing trace with hash -896097881, now seen corresponding path program 1 times [2021-12-06 23:40:26,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:26,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841171521] [2021-12-06 23:40:26,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:26,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:40:26,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:26,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841171521] [2021-12-06 23:40:26,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841171521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:26,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:26,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:40:26,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728873445] [2021-12-06 23:40:26,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:26,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:40:26,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:26,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:40:26,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:40:26,261 INFO L87 Difference]: Start difference. First operand 367 states and 581 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:28,273 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:28,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:28,526 INFO L93 Difference]: Finished difference Result 862 states and 1339 transitions. [2021-12-06 23:40:28,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:40:28,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-12-06 23:40:28,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:28,530 INFO L225 Difference]: With dead ends: 862 [2021-12-06 23:40:28,530 INFO L226 Difference]: Without dead ends: 502 [2021-12-06 23:40:28,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:40:28,532 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 104 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:28,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 284 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 209 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-12-06 23:40:28,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-12-06 23:40:28,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 371. [2021-12-06 23:40:28,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.5864864864864865) internal successors, (587), 370 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:28,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 587 transitions. [2021-12-06 23:40:28,544 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 587 transitions. Word has length 42 [2021-12-06 23:40:28,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:28,545 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 587 transitions. [2021-12-06 23:40:28,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:28,545 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 587 transitions. [2021-12-06 23:40:28,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 23:40:28,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:28,547 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2021-12-06 23:40:28,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 23:40:28,548 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:28,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:28,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1229797074, now seen corresponding path program 1 times [2021-12-06 23:40:28,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:28,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918843990] [2021-12-06 23:40:28,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:28,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:40:28,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:28,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918843990] [2021-12-06 23:40:28,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918843990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:28,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:28,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:40:28,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450927105] [2021-12-06 23:40:28,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:28,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:40:28,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:28,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:40:28,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:40:28,658 INFO L87 Difference]: Start difference. First operand 371 states and 587 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:30,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:32,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:32,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:32,863 INFO L93 Difference]: Finished difference Result 590 states and 933 transitions. [2021-12-06 23:40:32,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:40:32,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-12-06 23:40:32,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:32,865 INFO L225 Difference]: With dead ends: 590 [2021-12-06 23:40:32,865 INFO L226 Difference]: Without dead ends: 406 [2021-12-06 23:40:32,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:40:32,866 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 31 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:32,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 476 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2021-12-06 23:40:32,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-12-06 23:40:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 389. [2021-12-06 23:40:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.5902061855670102) internal successors, (617), 388 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:32,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 617 transitions. [2021-12-06 23:40:32,876 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 617 transitions. Word has length 60 [2021-12-06 23:40:32,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:32,877 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 617 transitions. [2021-12-06 23:40:32,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:32,877 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 617 transitions. [2021-12-06 23:40:32,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-06 23:40:32,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:32,878 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:40:32,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 23:40:32,878 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:32,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:32,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2133920155, now seen corresponding path program 1 times [2021-12-06 23:40:32,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:32,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81479828] [2021-12-06 23:40:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:32,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:32,964 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 23:40:32,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:32,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81479828] [2021-12-06 23:40:32,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81479828] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:32,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:32,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:40:32,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395296490] [2021-12-06 23:40:32,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:32,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:40:32,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:32,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:40:32,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:40:32,965 INFO L87 Difference]: Start difference. First operand 389 states and 617 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:34,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:36,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:37,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:37,238 INFO L93 Difference]: Finished difference Result 919 states and 1433 transitions. [2021-12-06 23:40:37,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:40:37,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-12-06 23:40:37,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:37,241 INFO L225 Difference]: With dead ends: 919 [2021-12-06 23:40:37,241 INFO L226 Difference]: Without dead ends: 537 [2021-12-06 23:40:37,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:40:37,242 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 111 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 29 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:37,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 493 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 207 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2021-12-06 23:40:37,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-12-06 23:40:37,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 392. [2021-12-06 23:40:37,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.5703324808184143) internal successors, (614), 391 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:37,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 614 transitions. [2021-12-06 23:40:37,252 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 614 transitions. Word has length 75 [2021-12-06 23:40:37,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:37,252 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 614 transitions. [2021-12-06 23:40:37,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:37,252 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 614 transitions. [2021-12-06 23:40:37,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-06 23:40:37,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:37,253 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:40:37,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:40:37,254 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:37,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:37,254 INFO L85 PathProgramCache]: Analyzing trace with hash -230297283, now seen corresponding path program 1 times [2021-12-06 23:40:37,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:37,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127292409] [2021-12-06 23:40:37,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:37,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 23:40:37,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:37,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127292409] [2021-12-06 23:40:37,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127292409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:37,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:37,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:40:37,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459161564] [2021-12-06 23:40:37,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:37,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:40:37,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:37,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:40:37,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:40:37,336 INFO L87 Difference]: Start difference. First operand 392 states and 614 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:39,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:39,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:39,589 INFO L93 Difference]: Finished difference Result 904 states and 1392 transitions. [2021-12-06 23:40:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:40:39,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-12-06 23:40:39,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:39,592 INFO L225 Difference]: With dead ends: 904 [2021-12-06 23:40:39,592 INFO L226 Difference]: Without dead ends: 522 [2021-12-06 23:40:39,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:40:39,594 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 118 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:39,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 284 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 209 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-12-06 23:40:39,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-12-06 23:40:39,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 392. [2021-12-06 23:40:39,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.5524296675191815) internal successors, (607), 391 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:39,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 607 transitions. [2021-12-06 23:40:39,604 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 607 transitions. Word has length 75 [2021-12-06 23:40:39,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:39,605 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 607 transitions. [2021-12-06 23:40:39,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:39,605 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 607 transitions. [2021-12-06 23:40:39,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 23:40:39,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:39,606 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:40:39,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 23:40:39,606 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:39,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:39,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1851153218, now seen corresponding path program 1 times [2021-12-06 23:40:39,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:39,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033653154] [2021-12-06 23:40:39,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:39,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:39,710 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 23:40:39,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:39,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033653154] [2021-12-06 23:40:39,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033653154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:39,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:39,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:40:39,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890073782] [2021-12-06 23:40:39,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:39,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:40:39,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:39,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:40:39,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:40:39,713 INFO L87 Difference]: Start difference. First operand 392 states and 607 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:41,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:42,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:42,003 INFO L93 Difference]: Finished difference Result 904 states and 1378 transitions. [2021-12-06 23:40:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:40:42,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-12-06 23:40:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:42,007 INFO L225 Difference]: With dead ends: 904 [2021-12-06 23:40:42,007 INFO L226 Difference]: Without dead ends: 522 [2021-12-06 23:40:42,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:40:42,008 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 116 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:42,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 306 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 210 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 23:40:42,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-12-06 23:40:42,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 392. [2021-12-06 23:40:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.5345268542199488) internal successors, (600), 391 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 600 transitions. [2021-12-06 23:40:42,023 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 600 transitions. Word has length 76 [2021-12-06 23:40:42,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:42,024 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 600 transitions. [2021-12-06 23:40:42,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:42,024 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 600 transitions. [2021-12-06 23:40:42,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 23:40:42,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:42,025 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:40:42,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 23:40:42,026 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:42,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:42,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1007196872, now seen corresponding path program 1 times [2021-12-06 23:40:42,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:42,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654840230] [2021-12-06 23:40:42,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:42,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 23:40:42,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:42,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654840230] [2021-12-06 23:40:42,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654840230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:42,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:42,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:40:42,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457366430] [2021-12-06 23:40:42,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:42,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:40:42,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:42,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:40:42,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:40:42,119 INFO L87 Difference]: Start difference. First operand 392 states and 600 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:44,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:46,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:46,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:46,294 INFO L93 Difference]: Finished difference Result 610 states and 932 transitions. [2021-12-06 23:40:46,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:40:46,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-06 23:40:46,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:46,297 INFO L225 Difference]: With dead ends: 610 [2021-12-06 23:40:46,297 INFO L226 Difference]: Without dead ends: 408 [2021-12-06 23:40:46,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:40:46,298 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 31 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:46,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 470 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2021-12-06 23:40:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-12-06 23:40:46,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 392. [2021-12-06 23:40:46,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.5319693094629157) internal successors, (599), 391 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 599 transitions. [2021-12-06 23:40:46,307 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 599 transitions. Word has length 77 [2021-12-06 23:40:46,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:46,307 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 599 transitions. [2021-12-06 23:40:46,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:46,307 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 599 transitions. [2021-12-06 23:40:46,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 23:40:46,308 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:46,308 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:40:46,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 23:40:46,308 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:46,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:46,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1063471143, now seen corresponding path program 1 times [2021-12-06 23:40:46,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:46,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932414287] [2021-12-06 23:40:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:46,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 23:40:46,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:46,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932414287] [2021-12-06 23:40:46,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932414287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:46,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:46,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:40:46,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556524309] [2021-12-06 23:40:46,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:46,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:40:46,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:46,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:40:46,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:40:46,384 INFO L87 Difference]: Start difference. First operand 392 states and 599 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:48,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:50,408 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:50,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:50,569 INFO L93 Difference]: Finished difference Result 601 states and 919 transitions. [2021-12-06 23:40:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:40:50,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-06 23:40:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:50,571 INFO L225 Difference]: With dead ends: 601 [2021-12-06 23:40:50,572 INFO L226 Difference]: Without dead ends: 399 [2021-12-06 23:40:50,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:40:50,573 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 22 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:50,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 456 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 119 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2021-12-06 23:40:50,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-12-06 23:40:50,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 392. [2021-12-06 23:40:50,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.5294117647058822) internal successors, (598), 391 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:50,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 598 transitions. [2021-12-06 23:40:50,594 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 598 transitions. Word has length 78 [2021-12-06 23:40:50,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:50,594 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 598 transitions. [2021-12-06 23:40:50,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:50,595 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 598 transitions. [2021-12-06 23:40:50,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 23:40:50,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:50,596 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:40:50,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 23:40:50,596 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:50,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:50,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1442464998, now seen corresponding path program 1 times [2021-12-06 23:40:50,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:50,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575216731] [2021-12-06 23:40:50,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:50,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 23:40:50,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:50,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575216731] [2021-12-06 23:40:50,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575216731] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:50,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:50,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:40:50,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192022066] [2021-12-06 23:40:50,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:50,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:40:50,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:50,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:40:50,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:40:50,686 INFO L87 Difference]: Start difference. First operand 392 states and 598 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:52,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:52,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:52,732 INFO L93 Difference]: Finished difference Result 793 states and 1214 transitions. [2021-12-06 23:40:52,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:40:52,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-06 23:40:52,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:52,734 INFO L225 Difference]: With dead ends: 793 [2021-12-06 23:40:52,734 INFO L226 Difference]: Without dead ends: 591 [2021-12-06 23:40:52,735 INFO L932 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 [2021-12-06 23:40:52,735 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 130 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:52,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 474 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 23:40:52,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-12-06 23:40:52,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2021-12-06 23:40:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 1.523728813559322) internal successors, (899), 590 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:52,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 899 transitions. [2021-12-06 23:40:52,746 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 899 transitions. Word has length 78 [2021-12-06 23:40:52,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:52,747 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 899 transitions. [2021-12-06 23:40:52,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:52,747 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 899 transitions. [2021-12-06 23:40:52,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 23:40:52,748 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:52,748 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:40:52,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 23:40:52,748 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:52,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:52,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1795553380, now seen corresponding path program 1 times [2021-12-06 23:40:52,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:52,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712822663] [2021-12-06 23:40:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:52,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 23:40:52,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:52,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712822663] [2021-12-06 23:40:52,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712822663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:52,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:52,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:40:52,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312390099] [2021-12-06 23:40:52,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:52,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:40:52,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:52,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:40:52,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:40:52,820 INFO L87 Difference]: Start difference. First operand 591 states and 899 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:54,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:54,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:54,856 INFO L93 Difference]: Finished difference Result 1016 states and 1543 transitions. [2021-12-06 23:40:54,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:40:54,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-06 23:40:54,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:54,859 INFO L225 Difference]: With dead ends: 1016 [2021-12-06 23:40:54,859 INFO L226 Difference]: Without dead ends: 615 [2021-12-06 23:40:54,859 INFO L932 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 [2021-12-06 23:40:54,860 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 15 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:54,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 354 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 23:40:54,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-12-06 23:40:54,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2021-12-06 23:40:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 1.51628664495114) internal successors, (931), 614 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:54,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 931 transitions. [2021-12-06 23:40:54,872 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 931 transitions. Word has length 78 [2021-12-06 23:40:54,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:54,872 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 931 transitions. [2021-12-06 23:40:54,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:54,872 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 931 transitions. [2021-12-06 23:40:54,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 23:40:54,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:54,873 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2021-12-06 23:40:54,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 23:40:54,873 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:54,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:54,874 INFO L85 PathProgramCache]: Analyzing trace with hash -158208422, now seen corresponding path program 1 times [2021-12-06 23:40:54,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:54,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340312667] [2021-12-06 23:40:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:54,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 23:40:54,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:54,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340312667] [2021-12-06 23:40:54,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340312667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:54,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:54,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:40:54,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525880705] [2021-12-06 23:40:54,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:54,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:40:54,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:54,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:40:54,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:40:54,954 INFO L87 Difference]: Start difference. First operand 615 states and 931 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:56,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:58,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:40:59,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:40:59,258 INFO L93 Difference]: Finished difference Result 1474 states and 2213 transitions. [2021-12-06 23:40:59,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:40:59,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-06 23:40:59,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:40:59,262 INFO L225 Difference]: With dead ends: 1474 [2021-12-06 23:40:59,262 INFO L226 Difference]: Without dead ends: 869 [2021-12-06 23:40:59,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:40:59,263 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 87 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:40:59,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 546 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 223 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-12-06 23:40:59,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2021-12-06 23:40:59,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 678. [2021-12-06 23:40:59,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 1.51698670605613) internal successors, (1027), 677 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:59,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1027 transitions. [2021-12-06 23:40:59,276 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1027 transitions. Word has length 98 [2021-12-06 23:40:59,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:40:59,276 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 1027 transitions. [2021-12-06 23:40:59,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:40:59,277 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1027 transitions. [2021-12-06 23:40:59,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 23:40:59,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:40:59,278 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2021-12-06 23:40:59,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 23:40:59,278 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:40:59,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:40:59,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1844388260, now seen corresponding path program 1 times [2021-12-06 23:40:59,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:40:59,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416347294] [2021-12-06 23:40:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:40:59,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:40:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:40:59,354 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 23:40:59,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:40:59,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416347294] [2021-12-06 23:40:59,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416347294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:40:59,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:40:59,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:40:59,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659500156] [2021-12-06 23:40:59,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:40:59,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:40:59,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:40:59,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:40:59,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:40:59,355 INFO L87 Difference]: Start difference. First operand 678 states and 1027 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:01,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:01,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:01,401 INFO L93 Difference]: Finished difference Result 1365 states and 2070 transitions. [2021-12-06 23:41:01,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:41:01,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-06 23:41:01,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:01,404 INFO L225 Difference]: With dead ends: 1365 [2021-12-06 23:41:01,404 INFO L226 Difference]: Without dead ends: 898 [2021-12-06 23:41:01,405 INFO L932 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 [2021-12-06 23:41:01,406 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 127 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:01,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 473 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 23:41:01,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2021-12-06 23:41:01,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 896. [2021-12-06 23:41:01,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 1.5162011173184358) internal successors, (1357), 895 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:01,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1357 transitions. [2021-12-06 23:41:01,436 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1357 transitions. Word has length 98 [2021-12-06 23:41:01,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:01,436 INFO L470 AbstractCegarLoop]: Abstraction has 896 states and 1357 transitions. [2021-12-06 23:41:01,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:01,436 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1357 transitions. [2021-12-06 23:41:01,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 23:41:01,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:01,438 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2021-12-06 23:41:01,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 23:41:01,438 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:01,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:01,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1703839650, now seen corresponding path program 1 times [2021-12-06 23:41:01,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:41:01,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659846160] [2021-12-06 23:41:01,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:01,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:41:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:01,516 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-06 23:41:01,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:41:01,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659846160] [2021-12-06 23:41:01,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659846160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:01,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:01,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:41:01,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352801292] [2021-12-06 23:41:01,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:01,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:41:01,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:41:01,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:41:01,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:41:01,518 INFO L87 Difference]: Start difference. First operand 896 states and 1357 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:03,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:03,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:03,569 INFO L93 Difference]: Finished difference Result 1555 states and 2351 transitions. [2021-12-06 23:41:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:41:03,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-06 23:41:03,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:03,573 INFO L225 Difference]: With dead ends: 1555 [2021-12-06 23:41:03,573 INFO L226 Difference]: Without dead ends: 870 [2021-12-06 23:41:03,574 INFO L932 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 [2021-12-06 23:41:03,574 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 130 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:03,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 472 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 23:41:03,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2021-12-06 23:41:03,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 870. [2021-12-06 23:41:03,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5063291139240507) internal successors, (1309), 869 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:03,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1309 transitions. [2021-12-06 23:41:03,589 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1309 transitions. Word has length 98 [2021-12-06 23:41:03,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:03,590 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 1309 transitions. [2021-12-06 23:41:03,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:03,590 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1309 transitions. [2021-12-06 23:41:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-06 23:41:03,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:03,592 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 23:41:03,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 23:41:03,592 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:03,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:03,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1820752595, now seen corresponding path program 1 times [2021-12-06 23:41:03,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:41:03,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772890330] [2021-12-06 23:41:03,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:03,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:41:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-06 23:41:03,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:41:03,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772890330] [2021-12-06 23:41:03,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772890330] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:03,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:03,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:41:03,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156151079] [2021-12-06 23:41:03,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:03,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:41:03,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:41:03,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:41:03,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:41:03,826 INFO L87 Difference]: Start difference. First operand 870 states and 1309 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:05,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:06,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:06,208 INFO L93 Difference]: Finished difference Result 2218 states and 3303 transitions. [2021-12-06 23:41:06,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:41:06,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-12-06 23:41:06,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:06,214 INFO L225 Difference]: With dead ends: 2218 [2021-12-06 23:41:06,214 INFO L226 Difference]: Without dead ends: 1557 [2021-12-06 23:41:06,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:41:06,216 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 234 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:06,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 295 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 244 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 23:41:06,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2021-12-06 23:41:06,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1480. [2021-12-06 23:41:06,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1479 states have (on average 1.4922244759972956) internal successors, (2207), 1479 states have internal predecessors, (2207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 2207 transitions. [2021-12-06 23:41:06,243 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 2207 transitions. Word has length 122 [2021-12-06 23:41:06,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:06,244 INFO L470 AbstractCegarLoop]: Abstraction has 1480 states and 2207 transitions. [2021-12-06 23:41:06,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:06,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 2207 transitions. [2021-12-06 23:41:06,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:41:06,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:06,246 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 23:41:06,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 23:41:06,246 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:06,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash 787843816, now seen corresponding path program 1 times [2021-12-06 23:41:06,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:41:06,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395463419] [2021-12-06 23:41:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:06,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:41:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-06 23:41:06,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:41:06,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395463419] [2021-12-06 23:41:06,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395463419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:06,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:06,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:41:06,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991516722] [2021-12-06 23:41:06,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:06,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:41:06,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:41:06,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:41:06,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:41:06,412 INFO L87 Difference]: Start difference. First operand 1480 states and 2207 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:08,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:08,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:08,675 INFO L93 Difference]: Finished difference Result 2501 states and 3703 transitions. [2021-12-06 23:41:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:41:08,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-12-06 23:41:08,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:08,682 INFO L225 Difference]: With dead ends: 2501 [2021-12-06 23:41:08,682 INFO L226 Difference]: Without dead ends: 1376 [2021-12-06 23:41:08,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:41:08,684 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 112 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:08,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 312 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 210 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-12-06 23:41:08,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-12-06 23:41:08,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1084. [2021-12-06 23:41:08,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 1083 states have (on average 1.4856879039704525) internal successors, (1609), 1083 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:08,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1609 transitions. [2021-12-06 23:41:08,712 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1609 transitions. Word has length 123 [2021-12-06 23:41:08,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:08,713 INFO L470 AbstractCegarLoop]: Abstraction has 1084 states and 1609 transitions. [2021-12-06 23:41:08,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:08,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1609 transitions. [2021-12-06 23:41:08,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-06 23:41:08,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:08,715 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:41:08,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 23:41:08,715 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:08,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:08,715 INFO L85 PathProgramCache]: Analyzing trace with hash -272550210, now seen corresponding path program 1 times [2021-12-06 23:41:08,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:41:08,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253911372] [2021-12-06 23:41:08,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:08,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:41:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:41:09,186 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:41:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:41:09,472 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:41:09,472 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:41:09,473 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 23:41:09,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 23:41:09,477 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:41:09,480 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:41:09,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:41:09 BoogieIcfgContainer [2021-12-06 23:41:09,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:41:09,575 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:41:09,575 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:41:09,575 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:41:09,575 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:40:18" (3/4) ... [2021-12-06 23:41:09,577 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 23:41:09,577 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:41:09,578 INFO L158 Benchmark]: Toolchain (without parser) took 54845.34ms. Allocated memory was 94.4MB in the beginning and 142.6MB in the end (delta: 48.2MB). Free memory was 55.9MB in the beginning and 57.3MB in the end (delta: -1.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2021-12-06 23:41:09,578 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory was 74.3MB in the beginning and 74.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:41:09,578 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.49ms. Allocated memory is still 94.4MB. Free memory was 55.8MB in the beginning and 50.3MB in the end (delta: 5.5MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-12-06 23:41:09,579 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.27ms. Allocated memory is still 94.4MB. Free memory was 50.3MB in the beginning and 45.5MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 23:41:09,579 INFO L158 Benchmark]: Boogie Preprocessor took 75.00ms. Allocated memory is still 94.4MB. Free memory was 45.5MB in the beginning and 67.8MB in the end (delta: -22.3MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2021-12-06 23:41:09,579 INFO L158 Benchmark]: RCFGBuilder took 2884.05ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 67.8MB in the beginning and 48.4MB in the end (delta: 19.5MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. [2021-12-06 23:41:09,579 INFO L158 Benchmark]: TraceAbstraction took 51399.73ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 48.1MB in the beginning and 57.3MB in the end (delta: -9.2MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. [2021-12-06 23:41:09,580 INFO L158 Benchmark]: Witness Printer took 2.80ms. Allocated memory is still 142.6MB. Free memory is still 57.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:41:09,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory was 74.3MB in the beginning and 74.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.49ms. Allocated memory is still 94.4MB. Free memory was 55.8MB in the beginning and 50.3MB in the end (delta: 5.5MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.27ms. Allocated memory is still 94.4MB. Free memory was 50.3MB in the beginning and 45.5MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.00ms. Allocated memory is still 94.4MB. Free memory was 45.5MB in the beginning and 67.8MB in the end (delta: -22.3MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * RCFGBuilder took 2884.05ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 67.8MB in the beginning and 48.4MB in the end (delta: 19.5MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. * TraceAbstraction took 51399.73ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 48.1MB in the beginning and 57.3MB in the end (delta: -9.2MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. * Witness Printer took 2.80ms. Allocated memory is still 142.6MB. Free memory is still 57.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1658]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 1343. Possible FailurePath: [L1042] static int init = 1; [L1043] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={4:0}] [L1065] SSL *s ; [L1069] s = malloc (sizeof (SSL)) [L1070] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1071] EXPR s->s3 [L1071] s->s3->flags = __VERIFIER_nondet_long() [L1072] EXPR s->s3 [L1072] (s->s3)->tmp.cert_req = __VERIFIER_nondet_int() [L1073] EXPR s->s3 [L1073] (s->s3)->tmp.new_cipher = malloc(sizeof(struct ssl_cipher_st)) [L1074] EXPR s->s3 [L1074] EXPR (s->s3)->tmp.new_cipher [L1074] ((s->s3)->tmp.new_cipher)->algorithms = __VERIFIER_nondet_ulong() [L1075] EXPR s->s3 [L1075] s->s3->tmp.next_state = __VERIFIER_nondet_int() [L1076] s->bbio = (BIO *) __VERIFIER_nondet_ulong() [L1077] s->wbio = (BIO *) __VERIFIER_nondet_ulong() [L1078] s->ctx = malloc(sizeof(SSL_CTX)) [L1079] EXPR s->ctx [L1079] (s->ctx)->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1080] s->state = 12292 [L1081] s->version = __VERIFIER_nondet_int() [L1082] s->init_buf = (BUF_MEM *)__VERIFIER_nondet_ulong() [L1083] s->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1084] CALL ssl3_connect(s) [L1090] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1091] unsigned long tmp ; [L1092] unsigned long l ; [L1093] long num1 ; [L1094] void (*cb)() ; [L1095] int ret ; [L1096] int new_state ; [L1097] int state ; [L1098] int skip ; [L1099] int *tmp___0 ; [L1100] int tmp___1 = __VERIFIER_nondet_int(); [L1101] int tmp___2 = __VERIFIER_nondet_int(); [L1102] int tmp___3 ; [L1103] int tmp___4 ; [L1104] int tmp___5 ; [L1105] int tmp___6 ; [L1106] int tmp___7 ; [L1107] int tmp___8 ; [L1108] long tmp___9 ; [L1110] int blastFlag ; [L1113] blastFlag = 0 [L1114] s->state = 12292 [L1115] s->hit = __VERIFIER_nondet_int() [L1117] tmp = __VERIFIER_nondet_int() [L1118] cb = (void (*)())((void *)0) [L1119] ret = -1 [L1120] skip = 0 [L1121] tmp___0 = (int*)malloc(sizeof(int)) [L1122] *tmp___0 = 0 [L1123] EXPR s->info_callback VAL [={0:0}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, s->info_callback={0:13}, skip=0, SSLv3_client_data={4:0}, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0] [L1123] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1124] EXPR s->info_callback [L1124] cb = s->info_callback [L1132] EXPR s->in_handshake [L1132] s->in_handshake += 1 [L1133] COND FALSE !(tmp___1 & 12288) VAL [={0:13}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0] [L1143] COND TRUE 1 VAL [={0:13}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:13}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=12292, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0] [L1146] COND TRUE s->state == 12292 [L1249] s->new_session = 1 [L1250] s->state = 4096 [L1251] EXPR s->ctx [L1251] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1251] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1256] s->server = 0 VAL [={0:13}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0] [L1257] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [={0:13}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0] [L1262] EXPR s->version VAL [={0:13}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, s->version=-4, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0] [L1262] COND FALSE !((s->version & 65280) != 768) [L1268] s->type = 4096 [L1269] EXPR s->init_buf VAL [={0:13}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, s->init_buf={0:-2}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0] [L1269] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1281] tmp___4 = __VERIFIER_nondet_int() [L1282] COND FALSE !(! tmp___4) [L1288] tmp___5 = __VERIFIER_nondet_int() [L1289] COND FALSE !(! tmp___5) [L1295] s->state = 4368 [L1296] EXPR s->ctx [L1296] EXPR (s->ctx)->stats.sess_connect [L1296] (s->ctx)->stats.sess_connect += 1 [L1297] s->init_num = 0 VAL [={0:13}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:13}, (s->s3)->tmp.reuse_message=4294967348, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, s->s3={-3:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:13}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1143] COND TRUE 1 VAL [={0:13}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:13}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:13}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:13}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:13}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:13}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:13}, blastFlag=0, buf={0:-9}, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1161] COND TRUE s->state == 4368 [L1301] s->shutdown = 0 [L1302] ret = __VERIFIER_nondet_int() [L1303] COND TRUE blastFlag == 0 [L1304] blastFlag = 1 VAL [={0:13}, blastFlag=1, buf={0:-9}, init=1, ret=11, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1308] COND FALSE !(ret <= 0) [L1313] s->state = 4384 [L1314] s->init_num = 0 [L1315] EXPR s->bbio [L1315] EXPR s->wbio VAL [={0:13}, blastFlag=1, buf={0:-9}, init=1, ret=11, s={-8:0}, s={-8:0}, s->bbio={0:-6}, s->wbio={0:15}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1315] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:13}, (s->s3)->tmp.reuse_message=4294967348, blastFlag=1, buf={0:-9}, init=1, ret=11, s={-8:0}, s={-8:0}, s->s3={-3:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:13}, blastFlag=1, buf={0:-9}, init=1, ret=11, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1143] COND TRUE 1 VAL [={0:13}, blastFlag=1, buf={0:-9}, init=1, ret=11, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:13}, blastFlag=1, buf={0:-9}, init=1, ret=11, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:13}, blastFlag=1, buf={0:-9}, init=1, ret=11, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:13}, blastFlag=1, buf={0:-9}, init=1, ret=11, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:13}, blastFlag=1, buf={0:-9}, init=1, ret=11, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:13}, blastFlag=1, buf={0:-9}, init=1, ret=11, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:13}, blastFlag=1, buf={0:-9}, init=1, ret=11, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [={0:13}, blastFlag=1, buf={0:-9}, init=1, ret=11, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [={0:13}, blastFlag=1, buf={0:-9}, init=1, ret=11, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1167] COND TRUE s->state == 4384 [L1323] ret = __VERIFIER_nondet_int() [L1324] COND TRUE blastFlag == 1 [L1325] blastFlag = 2 VAL [={0:13}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1329] COND FALSE !(ret <= 0) [L1334] s->hit VAL [={0:13}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, s->hit=0, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1334] COND FALSE !(s->hit) [L1337] s->state = 4400 VAL [={0:13}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1339] s->init_num = 0 VAL [={0:13}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:13}, (s->s3)->tmp.reuse_message=4294967348, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, s->s3={-3:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:13}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1143] COND TRUE 1 VAL [={0:13}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:13}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:13}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:13}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:13}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:13}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:13}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [={0:13}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [={0:13}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [={0:13}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [={0:13}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1173] COND TRUE s->state == 4400 [L1343] EXPR s->s3 [L1343] EXPR (s->s3)->tmp.new_cipher [L1343] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [={0:13}, ((s->s3)->tmp.new_cipher)->algorithms=4294967318, (s->s3)->tmp.new_cipher={-10:0}, blastFlag=2, buf={0:-9}, init=1, ret=18, s={-8:0}, s={-8:0}, s->s3={-3:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1343] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1346] ret = __VERIFIER_nondet_int() [L1347] COND TRUE blastFlag == 2 [L1348] blastFlag = 3 VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1352] COND FALSE !(ret <= 0) VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1358] s->state = 4416 [L1359] s->init_num = 0 VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:13}, (s->s3)->tmp.reuse_message=4294967348, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, s->s3={-3:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1143] COND TRUE 1 VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [={0:13}, blastFlag=3, buf={0:-9}, init=1, ret=21, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1179] COND TRUE s->state == 4416 [L1363] ret = __VERIFIER_nondet_int() [L1364] COND TRUE blastFlag == 3 [L1365] blastFlag = 4 VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1] [L1369] COND FALSE !(ret <= 0) [L1374] s->state = 4432 [L1375] s->init_num = 0 [L1376] tmp___6 = __VERIFIER_nondet_int() [L1377] COND FALSE !(! tmp___6) VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:13}, (s->s3)->tmp.reuse_message=4294967348, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->s3={-3:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1143] COND TRUE 1 VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1179] COND FALSE !(s->state == 4416) [L1182] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1182] COND FALSE !(s->state == 4417) [L1185] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1185] COND TRUE s->state == 4432 [L1386] ret = __VERIFIER_nondet_int() [L1387] COND FALSE !(blastFlag == 5) VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1392] COND FALSE !(ret <= 0) [L1397] s->state = 4448 [L1398] s->init_num = 0 VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:13}, (s->s3)->tmp.reuse_message=4294967348, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->s3={-3:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1143] COND TRUE 1 VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1179] COND FALSE !(s->state == 4416) [L1182] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1182] COND FALSE !(s->state == 4417) [L1185] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1185] COND FALSE !(s->state == 4432) [L1188] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1188] COND FALSE !(s->state == 4433) [L1191] EXPR s->state VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1191] COND TRUE s->state == 4448 [L1402] ret = __VERIFIER_nondet_int() [L1403] COND TRUE blastFlag == 4 VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=-15, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] [L1658] reach_error() VAL [={0:13}, blastFlag=4, buf={0:-9}, init=1, ret=-15, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4448, tmp=0, tmp___0={-7:0}, tmp___1=0, tmp___2=0, tmp___4=1, tmp___5=1, tmp___6=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 51.2s, OverallIterations: 19, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 47.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 22 mSolverCounterUnknown, 1868 SdHoareTripleChecker+Valid, 47.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1868 mSDsluCounter, 6908 SdHoareTripleChecker+Invalid, 46.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3702 mSDsCounter, 420 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2605 IncrementalHoareTripleChecker+Invalid, 3047 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 420 mSolverCounterUnsat, 3206 mSDtfsCounter, 2605 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1480occurred in iteration=17, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 1543 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1459 NumberOfCodeBlocks, 1459 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1304 ConstructedInterpolants, 0 QuantifiedInterpolants, 3120 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 1208/1208 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 [2021-12-06 23:41:09,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/s3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d053be7ac759c4172c4b0b5fbe009ed8f624c0c8659eb750e9996926d5d3b0a1 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:41:11,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:41:11,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:41:11,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:41:11,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:41:11,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:41:11,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:41:11,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:41:11,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:41:11,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:41:11,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:41:11,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:41:11,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:41:11,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:41:11,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:41:11,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:41:11,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:41:11,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:41:11,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:41:11,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:41:11,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:41:11,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:41:11,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:41:11,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:41:11,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:41:11,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:41:11,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:41:11,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:41:11,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:41:11,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:41:11,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:41:11,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:41:11,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:41:11,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:41:11,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:41:11,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:41:11,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:41:11,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:41:11,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:41:11,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:41:11,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:41:11,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 23:41:11,163 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:41:11,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:41:11,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:41:11,164 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:41:11,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:41:11,164 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:41:11,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:41:11,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:41:11,165 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:41:11,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:41:11,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:41:11,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:41:11,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:41:11,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:41:11,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:41:11,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:41:11,166 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:41:11,166 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 23:41:11,166 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 23:41:11,166 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:41:11,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:41:11,167 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:41:11,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:41:11,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:41:11,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:41:11,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:41:11,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:41:11,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:41:11,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:41:11,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:41:11,168 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 23:41:11,168 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 23:41:11,168 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:41:11,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:41:11,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:41:11,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:41:11,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 23:41:11,169 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_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d053be7ac759c4172c4b0b5fbe009ed8f624c0c8659eb750e9996926d5d3b0a1 [2021-12-06 23:41:11,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:41:11,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:41:11,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:41:11,424 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:41:11,425 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:41:11,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/loops/s3.i [2021-12-06 23:41:11,473 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/data/98f870d59/53e8b9a0611d4921b339d26c2f2cbcdf/FLAG3c4dbb7ca [2021-12-06 23:41:11,945 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:41:11,945 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/sv-benchmarks/c/loops/s3.i [2021-12-06 23:41:11,959 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/data/98f870d59/53e8b9a0611d4921b339d26c2f2cbcdf/FLAG3c4dbb7ca [2021-12-06 23:41:12,452 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/data/98f870d59/53e8b9a0611d4921b339d26c2f2cbcdf [2021-12-06 23:41:12,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:41:12,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:41:12,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:41:12,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:41:12,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:41:12,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:41:12" (1/1) ... [2021-12-06 23:41:12,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312ac117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:12, skipping insertion in model container [2021-12-06 23:41:12,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:41:12" (1/1) ... [2021-12-06 23:41:12,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:41:12,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:41:12,776 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-12-06 23:41:12,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:41:12,798 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 23:41:12,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:41:12,887 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-12-06 23:41:12,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:41:12,899 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:41:12,984 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-12-06 23:41:12,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:41:13,006 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:41:13,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:13 WrapperNode [2021-12-06 23:41:13,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:41:13,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:41:13,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:41:13,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:41:13,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:13" (1/1) ... [2021-12-06 23:41:13,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:13" (1/1) ... [2021-12-06 23:41:13,082 INFO L137 Inliner]: procedures = 34, calls = 222, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 702 [2021-12-06 23:41:13,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:41:13,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:41:13,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:41:13,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:41:13,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:13" (1/1) ... [2021-12-06 23:41:13,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:13" (1/1) ... [2021-12-06 23:41:13,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:13" (1/1) ... [2021-12-06 23:41:13,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:13" (1/1) ... [2021-12-06 23:41:13,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:13" (1/1) ... [2021-12-06 23:41:13,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:13" (1/1) ... [2021-12-06 23:41:13,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:13" (1/1) ... [2021-12-06 23:41:13,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:41:13,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:41:13,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:41:13,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:41:13,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:13" (1/1) ... [2021-12-06 23:41:13,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:41:13,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:41:13,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:41:13,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:41:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:41:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 23:41:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:41:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 23:41:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:41:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:41:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:41:13,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:41:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 23:41:13,356 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:41:13,358 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:41:13,394 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-06 23:41:21,180 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-12-06 23:41:21,180 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-12-06 23:41:21,180 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:41:21,186 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:41:21,186 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 23:41:21,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:41:21 BoogieIcfgContainer [2021-12-06 23:41:21,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:41:21,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:41:21,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:41:21,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:41:21,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:41:12" (1/3) ... [2021-12-06 23:41:21,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc45dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:41:21, skipping insertion in model container [2021-12-06 23:41:21,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:41:13" (2/3) ... [2021-12-06 23:41:21,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc45dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:41:21, skipping insertion in model container [2021-12-06 23:41:21,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:41:21" (3/3) ... [2021-12-06 23:41:21,196 INFO L111 eAbstractionObserver]: Analyzing ICFG s3.i [2021-12-06 23:41:21,201 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:41:21,201 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:41:21,239 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:41:21,244 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:41:21,244 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:41:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:21,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 23:41:21,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:21,270 INFO L514 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] [2021-12-06 23:41:21,270 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:21,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:21,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1457703967, now seen corresponding path program 1 times [2021-12-06 23:41:21,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:41:21,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647748589] [2021-12-06 23:41:21,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:21,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:41:21,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:41:21,286 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:41:21,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 23:41:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:21,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:41:21,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:41:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:41:21,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:41:21,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:41:21,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647748589] [2021-12-06 23:41:21,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647748589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:21,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:21,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:41:21,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659019942] [2021-12-06 23:41:21,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:21,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:41:21,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:41:21,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:41:21,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:41:21,972 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:22,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:22,072 INFO L93 Difference]: Finished difference Result 375 states and 626 transitions. [2021-12-06 23:41:22,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:41:22,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-06 23:41:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:22,083 INFO L225 Difference]: With dead ends: 375 [2021-12-06 23:41:22,083 INFO L226 Difference]: Without dead ends: 217 [2021-12-06 23:41:22,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:41:22,088 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 181 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:22,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 402 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:41:22,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-06 23:41:22,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-12-06 23:41:22,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.4861111111111112) internal successors, (321), 216 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:22,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 321 transitions. [2021-12-06 23:41:22,132 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 321 transitions. Word has length 24 [2021-12-06 23:41:22,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:22,133 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 321 transitions. [2021-12-06 23:41:22,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:22,133 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 321 transitions. [2021-12-06 23:41:22,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 23:41:22,135 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:22,135 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 23:41:22,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:41:22,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:41:22,337 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:22,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:22,340 INFO L85 PathProgramCache]: Analyzing trace with hash 546953675, now seen corresponding path program 1 times [2021-12-06 23:41:22,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:41:22,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844148937] [2021-12-06 23:41:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:22,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:41:22,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:41:22,347 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:41:22,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 23:41:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:22,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:41:22,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:41:23,103 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:41:23,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:41:23,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:41:23,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844148937] [2021-12-06 23:41:23,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844148937] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:23,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:23,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:41:23,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870698048] [2021-12-06 23:41:23,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:23,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:41:23,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:41:23,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:41:23,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:41:23,107 INFO L87 Difference]: Start difference. First operand 217 states and 321 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:25,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:25,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:25,222 INFO L93 Difference]: Finished difference Result 426 states and 636 transitions. [2021-12-06 23:41:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:41:25,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-12-06 23:41:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:25,226 INFO L225 Difference]: With dead ends: 426 [2021-12-06 23:41:25,226 INFO L226 Difference]: Without dead ends: 319 [2021-12-06 23:41:25,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:41:25,228 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 126 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:25,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 467 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 23:41:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-12-06 23:41:25,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2021-12-06 23:41:25,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.4779874213836477) internal successors, (470), 318 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:25,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 470 transitions. [2021-12-06 23:41:25,247 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 470 transitions. Word has length 39 [2021-12-06 23:41:25,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:25,248 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 470 transitions. [2021-12-06 23:41:25,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:25,248 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 470 transitions. [2021-12-06 23:41:25,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 23:41:25,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:25,251 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 23:41:25,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 23:41:25,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:41:25,453 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:25,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:25,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1711683715, now seen corresponding path program 1 times [2021-12-06 23:41:25,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:41:25,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326527213] [2021-12-06 23:41:25,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:25,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:41:25,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:41:25,463 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:41:25,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 23:41:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:25,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:41:25,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:41:26,115 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 23:41:26,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:41:26,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:41:26,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326527213] [2021-12-06 23:41:26,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326527213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:26,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:26,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:41:26,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415014303] [2021-12-06 23:41:26,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:26,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:41:26,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:41:26,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:41:26,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:41:26,117 INFO L87 Difference]: Start difference. First operand 319 states and 470 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:28,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:28,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:28,225 INFO L93 Difference]: Finished difference Result 632 states and 937 transitions. [2021-12-06 23:41:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:41:28,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-06 23:41:28,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:28,228 INFO L225 Difference]: With dead ends: 632 [2021-12-06 23:41:28,228 INFO L226 Difference]: Without dead ends: 423 [2021-12-06 23:41:28,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:41:28,231 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 128 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:28,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 474 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 23:41:28,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-12-06 23:41:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2021-12-06 23:41:28,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 1.4739336492890995) internal successors, (622), 422 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:28,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 622 transitions. [2021-12-06 23:41:28,247 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 622 transitions. Word has length 57 [2021-12-06 23:41:28,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:28,247 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 622 transitions. [2021-12-06 23:41:28,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:28,248 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 622 transitions. [2021-12-06 23:41:28,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 23:41:28,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:28,251 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2021-12-06 23:41:28,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 23:41:28,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:41:28,453 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:28,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:28,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1922596163, now seen corresponding path program 1 times [2021-12-06 23:41:28,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:41:28,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159210334] [2021-12-06 23:41:28,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:28,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:41:28,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:41:28,459 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:41:28,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 23:41:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:28,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:41:28,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:41:29,154 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-06 23:41:29,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:41:29,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:41:29,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159210334] [2021-12-06 23:41:29,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159210334] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:29,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:29,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:41:29,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229372017] [2021-12-06 23:41:29,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:29,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:41:29,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:41:29,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:41:29,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:41:29,157 INFO L87 Difference]: Start difference. First operand 423 states and 622 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:31,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:31,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:31,272 INFO L93 Difference]: Finished difference Result 839 states and 1240 transitions. [2021-12-06 23:41:31,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:41:31,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-06 23:41:31,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:31,278 INFO L225 Difference]: With dead ends: 839 [2021-12-06 23:41:31,278 INFO L226 Difference]: Without dead ends: 526 [2021-12-06 23:41:31,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:41:31,280 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 128 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:31,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 473 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 23:41:31,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-12-06 23:41:31,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2021-12-06 23:41:31,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.4723809523809523) internal successors, (773), 525 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:31,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 773 transitions. [2021-12-06 23:41:31,302 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 773 transitions. Word has length 77 [2021-12-06 23:41:31,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:31,303 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 773 transitions. [2021-12-06 23:41:31,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:31,303 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 773 transitions. [2021-12-06 23:41:31,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 23:41:31,307 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:31,307 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2021-12-06 23:41:31,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-06 23:41:31,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:41:31,509 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:31,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:31,511 INFO L85 PathProgramCache]: Analyzing trace with hash -158208422, now seen corresponding path program 1 times [2021-12-06 23:41:31,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:41:31,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404565492] [2021-12-06 23:41:31,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:31,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:41:31,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:41:31,517 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:41:31,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 23:41:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:32,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:41:32,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:41:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 23:41:32,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:41:32,326 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:41:32,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404565492] [2021-12-06 23:41:32,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404565492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:32,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:32,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:41:32,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424881325] [2021-12-06 23:41:32,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:32,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:41:32,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:41:32,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:41:32,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:41:32,328 INFO L87 Difference]: Start difference. First operand 526 states and 773 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:34,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:34,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:34,415 INFO L93 Difference]: Finished difference Result 939 states and 1381 transitions. [2021-12-06 23:41:34,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:41:34,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-06 23:41:34,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:34,419 INFO L225 Difference]: With dead ends: 939 [2021-12-06 23:41:34,419 INFO L226 Difference]: Without dead ends: 523 [2021-12-06 23:41:34,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:41:34,421 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 128 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:34,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 469 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 23:41:34,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-12-06 23:41:34,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2021-12-06 23:41:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 522 states have (on average 1.4616858237547892) internal successors, (763), 522 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:34,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 763 transitions. [2021-12-06 23:41:34,439 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 763 transitions. Word has length 98 [2021-12-06 23:41:34,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:34,439 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 763 transitions. [2021-12-06 23:41:34,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:34,439 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 763 transitions. [2021-12-06 23:41:34,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 23:41:34,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:34,441 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2021-12-06 23:41:34,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 23:41:34,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:41:34,642 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:34,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:34,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1855651051, now seen corresponding path program 1 times [2021-12-06 23:41:34,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:41:34,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825113132] [2021-12-06 23:41:34,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:34,648 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:41:34,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:41:34,650 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:41:34,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 23:41:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:35,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:41:35,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:41:35,876 INFO L354 Elim1Store]: treesize reduction 180, result has 14.3 percent of original size [2021-12-06 23:41:35,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 39 [2021-12-06 23:41:36,126 INFO L354 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2021-12-06 23:41:36,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 51 [2021-12-06 23:41:36,254 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-06 23:41:36,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 15 [2021-12-06 23:41:36,408 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 23:41:36,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:41:36,408 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:41:36,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825113132] [2021-12-06 23:41:36,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825113132] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:36,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:36,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:41:36,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44446758] [2021-12-06 23:41:36,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:36,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:41:36,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:41:36,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:41:36,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:41:36,410 INFO L87 Difference]: Start difference. First operand 523 states and 763 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:38,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:42,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:46,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:41:46,174 INFO L93 Difference]: Finished difference Result 1191 states and 1739 transitions. [2021-12-06 23:41:46,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:41:46,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-12-06 23:41:46,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:41:46,179 INFO L225 Difference]: With dead ends: 1191 [2021-12-06 23:41:46,179 INFO L226 Difference]: Without dead ends: 675 [2021-12-06 23:41:46,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:41:46,181 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 31 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:41:46,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 479 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 1 Unknown, 30 Unchecked, 9.7s Time] [2021-12-06 23:41:46,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-12-06 23:41:46,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 607. [2021-12-06 23:41:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 606 states have (on average 1.49009900990099) internal successors, (903), 606 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:46,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 903 transitions. [2021-12-06 23:41:46,197 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 903 transitions. Word has length 100 [2021-12-06 23:41:46,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:41:46,197 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 903 transitions. [2021-12-06 23:41:46,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:46,198 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 903 transitions. [2021-12-06 23:41:46,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 23:41:46,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:41:46,199 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2021-12-06 23:41:46,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 23:41:46,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:41:46,401 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:41:46,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:41:46,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1223162519, now seen corresponding path program 1 times [2021-12-06 23:41:46,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:41:46,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885956112] [2021-12-06 23:41:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:41:46,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:41:46,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:41:46,410 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:41:46,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 23:41:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:41:47,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:41:47,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:41:47,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:41:47,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:41:47,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:41:47,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:41:47,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:41:47,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:41:48,048 INFO L354 Elim1Store]: treesize reduction 1109, result has 5.5 percent of original size [2021-12-06 23:41:48,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 52 treesize of output 73 [2021-12-06 23:41:48,743 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-06 23:41:48,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 22 [2021-12-06 23:41:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 23:41:48,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:41:48,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:41:48,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885956112] [2021-12-06 23:41:48,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885956112] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:41:48,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:41:48,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:41:48,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966665275] [2021-12-06 23:41:48,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:41:48,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:41:48,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:41:48,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:41:48,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:41:48,782 INFO L87 Difference]: Start difference. First operand 607 states and 903 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:41:50,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:52,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:41:57,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:01,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:02,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:04,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:42:04,144 INFO L93 Difference]: Finished difference Result 1413 states and 2092 transitions. [2021-12-06 23:42:04,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:42:04,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-12-06 23:42:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:42:04,153 INFO L225 Difference]: With dead ends: 1413 [2021-12-06 23:42:04,153 INFO L226 Difference]: Without dead ends: 813 [2021-12-06 23:42:04,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:42:04,155 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 46 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:42:04,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 508 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 2 Unknown, 0 Unchecked, 15.3s Time] [2021-12-06 23:42:04,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-12-06 23:42:04,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 703. [2021-12-06 23:42:04,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 702 states have (on average 1.5256410256410255) internal successors, (1071), 702 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:04,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1071 transitions. [2021-12-06 23:42:04,178 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1071 transitions. Word has length 100 [2021-12-06 23:42:04,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:42:04,178 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 1071 transitions. [2021-12-06 23:42:04,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:04,178 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1071 transitions. [2021-12-06 23:42:04,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-06 23:42:04,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:42:04,181 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:42:04,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 23:42:04,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:42:04,382 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:42:04,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:42:04,382 INFO L85 PathProgramCache]: Analyzing trace with hash -517718612, now seen corresponding path program 1 times [2021-12-06 23:42:04,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:42:04,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317542453] [2021-12-06 23:42:04,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:42:04,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:42:04,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:42:04,384 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:42:04,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 23:42:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:05,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:42:05,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:42:06,513 INFO L354 Elim1Store]: treesize reduction 1101, result has 5.5 percent of original size [2021-12-06 23:42:06,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 73 [2021-12-06 23:42:06,580 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-06 23:42:06,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 13 [2021-12-06 23:42:06,685 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 23:42:06,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:42:06,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:42:06,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317542453] [2021-12-06 23:42:06,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317542453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:42:06,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:42:06,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:42:06,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2780713] [2021-12-06 23:42:06,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:42:06,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:42:06,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:42:06,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:42:06,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:42:06,687 INFO L87 Difference]: Start difference. First operand 703 states and 1071 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:08,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:11,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:13,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:42:13,611 INFO L93 Difference]: Finished difference Result 1464 states and 2226 transitions. [2021-12-06 23:42:13,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:42:13,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-12-06 23:42:13,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:42:13,617 INFO L225 Difference]: With dead ends: 1464 [2021-12-06 23:42:13,617 INFO L226 Difference]: Without dead ends: 768 [2021-12-06 23:42:13,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:42:13,619 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 12 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:42:13,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 431 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 79 Invalid, 1 Unknown, 15 Unchecked, 6.9s Time] [2021-12-06 23:42:13,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2021-12-06 23:42:13,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 768. [2021-12-06 23:42:13,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 1.5032594524119949) internal successors, (1153), 767 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1153 transitions. [2021-12-06 23:42:13,647 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1153 transitions. Word has length 115 [2021-12-06 23:42:13,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:42:13,647 INFO L470 AbstractCegarLoop]: Abstraction has 768 states and 1153 transitions. [2021-12-06 23:42:13,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:13,647 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1153 transitions. [2021-12-06 23:42:13,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-06 23:42:13,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:42:13,649 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:42:13,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 23:42:13,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:42:13,850 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:42:13,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:42:13,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1265744566, now seen corresponding path program 1 times [2021-12-06 23:42:13,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:42:13,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27991929] [2021-12-06 23:42:13,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:42:13,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:42:13,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:42:13,852 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:42:13,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 23:42:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:15,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:42:15,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:42:15,682 INFO L354 Elim1Store]: treesize reduction 1101, result has 5.5 percent of original size [2021-12-06 23:42:15,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 73 [2021-12-06 23:42:15,753 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-06 23:42:15,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 13 [2021-12-06 23:42:15,864 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 23:42:15,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:42:15,864 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:42:15,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27991929] [2021-12-06 23:42:15,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27991929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:42:15,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:42:15,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:42:15,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013322760] [2021-12-06 23:42:15,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:42:15,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:42:15,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:42:15,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:42:15,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:42:15,866 INFO L87 Difference]: Start difference. First operand 768 states and 1153 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:17,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:21,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:42:21,598 INFO L93 Difference]: Finished difference Result 1534 states and 2305 transitions. [2021-12-06 23:42:21,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:42:21,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-12-06 23:42:21,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:42:21,604 INFO L225 Difference]: With dead ends: 1534 [2021-12-06 23:42:21,604 INFO L226 Difference]: Without dead ends: 773 [2021-12-06 23:42:21,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:42:21,606 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 12 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:42:21,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 431 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 80 Invalid, 1 Unknown, 18 Unchecked, 5.7s Time] [2021-12-06 23:42:21,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2021-12-06 23:42:21,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 773. [2021-12-06 23:42:21,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 772 states have (on average 1.4896373056994818) internal successors, (1150), 772 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1150 transitions. [2021-12-06 23:42:21,632 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1150 transitions. Word has length 115 [2021-12-06 23:42:21,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:42:21,632 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 1150 transitions. [2021-12-06 23:42:21,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:21,632 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1150 transitions. [2021-12-06 23:42:21,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-06 23:42:21,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:42:21,634 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:42:21,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 23:42:21,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:42:21,835 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:42:21,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:42:21,837 INFO L85 PathProgramCache]: Analyzing trace with hash -647023955, now seen corresponding path program 1 times [2021-12-06 23:42:21,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:42:21,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314932680] [2021-12-06 23:42:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:42:21,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:42:21,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:42:21,843 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:42:21,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 23:42:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:23,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:42:23,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:42:23,819 INFO L354 Elim1Store]: treesize reduction 1100, result has 5.5 percent of original size [2021-12-06 23:42:23,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 73 [2021-12-06 23:42:23,938 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-06 23:42:23,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 13 [2021-12-06 23:42:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 23:42:24,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:42:24,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:42:24,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314932680] [2021-12-06 23:42:24,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314932680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:42:24,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:42:24,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:42:24,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524253233] [2021-12-06 23:42:24,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:42:24,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:42:24,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:42:24,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:42:24,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:42:24,041 INFO L87 Difference]: Start difference. First operand 773 states and 1150 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:26,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:31,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:42:31,553 INFO L93 Difference]: Finished difference Result 1415 states and 2093 transitions. [2021-12-06 23:42:31,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:42:31,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-12-06 23:42:31,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:42:31,559 INFO L225 Difference]: With dead ends: 1415 [2021-12-06 23:42:31,559 INFO L226 Difference]: Without dead ends: 809 [2021-12-06 23:42:31,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:42:31,560 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 20 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:42:31,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 460 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 1 Unknown, 19 Unchecked, 7.5s Time] [2021-12-06 23:42:31,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2021-12-06 23:42:31,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 773. [2021-12-06 23:42:31,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 772 states have (on average 1.4844559585492227) internal successors, (1146), 772 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:31,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1146 transitions. [2021-12-06 23:42:31,576 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1146 transitions. Word has length 115 [2021-12-06 23:42:31,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:42:31,577 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 1146 transitions. [2021-12-06 23:42:31,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:31,577 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1146 transitions. [2021-12-06 23:42:31,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-06 23:42:31,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:42:31,578 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:42:31,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 23:42:31,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:42:31,780 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:42:31,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:42:31,782 INFO L85 PathProgramCache]: Analyzing trace with hash -849536469, now seen corresponding path program 1 times [2021-12-06 23:42:31,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:42:31,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089942482] [2021-12-06 23:42:31,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:42:31,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:42:31,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:42:31,788 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:42:31,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 23:42:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:33,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:42:33,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:42:33,753 INFO L354 Elim1Store]: treesize reduction 1101, result has 5.5 percent of original size [2021-12-06 23:42:33,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 73 [2021-12-06 23:42:33,833 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-06 23:42:33,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 13 [2021-12-06 23:42:33,934 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 23:42:33,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:42:33,934 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:42:33,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089942482] [2021-12-06 23:42:33,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089942482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:42:33,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:42:33,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:42:33,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336623501] [2021-12-06 23:42:33,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:42:33,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:42:33,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:42:33,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:42:33,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:42:33,936 INFO L87 Difference]: Start difference. First operand 773 states and 1146 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:35,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:39,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:42:39,847 INFO L93 Difference]: Finished difference Result 1544 states and 2291 transitions. [2021-12-06 23:42:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:42:39,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-12-06 23:42:39,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:42:39,853 INFO L225 Difference]: With dead ends: 1544 [2021-12-06 23:42:39,854 INFO L226 Difference]: Without dead ends: 778 [2021-12-06 23:42:39,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:42:39,855 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 12 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:42:39,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 431 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 81 Invalid, 1 Unknown, 17 Unchecked, 5.9s Time] [2021-12-06 23:42:39,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-12-06 23:42:39,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 778. [2021-12-06 23:42:39,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 1.471042471042471) internal successors, (1143), 777 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:39,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1143 transitions. [2021-12-06 23:42:39,870 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1143 transitions. Word has length 116 [2021-12-06 23:42:39,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:42:39,870 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 1143 transitions. [2021-12-06 23:42:39,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1143 transitions. [2021-12-06 23:42:39,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-06 23:42:39,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:42:39,875 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:42:39,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-06 23:42:40,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:42:40,077 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:42:40,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:42:40,079 INFO L85 PathProgramCache]: Analyzing trace with hash -710278962, now seen corresponding path program 1 times [2021-12-06 23:42:40,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:42:40,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339510593] [2021-12-06 23:42:40,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:42:40,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:42:40,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:42:40,085 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:42:40,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 23:42:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:41,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:42:41,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:42:42,060 INFO L354 Elim1Store]: treesize reduction 1100, result has 5.5 percent of original size [2021-12-06 23:42:42,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 73 [2021-12-06 23:42:42,177 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-06 23:42:42,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 13 [2021-12-06 23:42:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 23:42:42,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:42:42,282 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:42:42,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339510593] [2021-12-06 23:42:42,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339510593] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:42:42,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:42:42,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:42:42,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095955421] [2021-12-06 23:42:42,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:42:42,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:42:42,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:42:42,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:42:42,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:42:42,284 INFO L87 Difference]: Start difference. First operand 778 states and 1143 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:44,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:49,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:42:49,324 INFO L93 Difference]: Finished difference Result 1424 states and 2081 transitions. [2021-12-06 23:42:49,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:42:49,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-12-06 23:42:49,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:42:49,330 INFO L225 Difference]: With dead ends: 1424 [2021-12-06 23:42:49,330 INFO L226 Difference]: Without dead ends: 814 [2021-12-06 23:42:49,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:42:49,331 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 19 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:42:49,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 458 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 1 Unknown, 20 Unchecked, 7.0s Time] [2021-12-06 23:42:49,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2021-12-06 23:42:49,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 778. [2021-12-06 23:42:49,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 1.465894465894466) internal successors, (1139), 777 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1139 transitions. [2021-12-06 23:42:49,347 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1139 transitions. Word has length 116 [2021-12-06 23:42:49,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:42:49,347 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 1139 transitions. [2021-12-06 23:42:49,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:49,347 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1139 transitions. [2021-12-06 23:42:49,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-06 23:42:49,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:42:49,349 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:42:49,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 23:42:49,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:42:49,550 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:42:49,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:42:49,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1134529903, now seen corresponding path program 1 times [2021-12-06 23:42:49,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:42:49,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863013241] [2021-12-06 23:42:49,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:42:49,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:42:49,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:42:49,555 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:42:49,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 23:42:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:42:51,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:42:51,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:42:52,030 INFO L354 Elim1Store]: treesize reduction 1101, result has 5.5 percent of original size [2021-12-06 23:42:52,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 73 [2021-12-06 23:42:52,119 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-06 23:42:52,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 13 [2021-12-06 23:42:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 23:42:52,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:42:52,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:42:52,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863013241] [2021-12-06 23:42:52,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863013241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:42:52,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:42:52,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:42:52,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838865107] [2021-12-06 23:42:52,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:42:52,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:42:52,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:42:52,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:42:52,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:42:52,231 INFO L87 Difference]: Start difference. First operand 778 states and 1139 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:54,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:56,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:42:59,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:42:59,341 INFO L93 Difference]: Finished difference Result 1554 states and 2277 transitions. [2021-12-06 23:42:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:42:59,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-12-06 23:42:59,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:42:59,346 INFO L225 Difference]: With dead ends: 1554 [2021-12-06 23:42:59,346 INFO L226 Difference]: Without dead ends: 783 [2021-12-06 23:42:59,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:42:59,347 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 12 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:42:59,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 431 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 82 Invalid, 1 Unknown, 19 Unchecked, 7.1s Time] [2021-12-06 23:42:59,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-12-06 23:42:59,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 783. [2021-12-06 23:42:59,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 782 states have (on average 1.4526854219948848) internal successors, (1136), 782 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:59,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1136 transitions. [2021-12-06 23:42:59,362 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1136 transitions. Word has length 117 [2021-12-06 23:42:59,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:42:59,362 INFO L470 AbstractCegarLoop]: Abstraction has 783 states and 1136 transitions. [2021-12-06 23:42:59,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:42:59,362 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1136 transitions. [2021-12-06 23:42:59,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 23:42:59,363 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:42:59,363 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:42:59,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-06 23:42:59,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:42:59,564 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:42:59,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:42:59,564 INFO L85 PathProgramCache]: Analyzing trace with hash 182595248, now seen corresponding path program 1 times [2021-12-06 23:42:59,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:42:59,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043409742] [2021-12-06 23:42:59,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:42:59,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:42:59,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:42:59,566 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:42:59,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 23:43:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:01,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:43:01,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:43:01,518 INFO L354 Elim1Store]: treesize reduction 1101, result has 5.5 percent of original size [2021-12-06 23:43:01,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 73 [2021-12-06 23:43:01,610 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-06 23:43:01,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 13 [2021-12-06 23:43:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 23:43:01,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:43:01,723 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:43:01,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043409742] [2021-12-06 23:43:01,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043409742] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:43:01,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:43:01,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:43:01,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791638746] [2021-12-06 23:43:01,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:43:01,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:43:01,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:43:01,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:43:01,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:43:01,724 INFO L87 Difference]: Start difference. First operand 783 states and 1136 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:03,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:07,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:43:07,369 INFO L93 Difference]: Finished difference Result 1564 states and 2271 transitions. [2021-12-06 23:43:07,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:43:07,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-06 23:43:07,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:43:07,375 INFO L225 Difference]: With dead ends: 1564 [2021-12-06 23:43:07,375 INFO L226 Difference]: Without dead ends: 788 [2021-12-06 23:43:07,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:43:07,376 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 12 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:43:07,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 431 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 83 Invalid, 1 Unknown, 21 Unchecked, 5.6s Time] [2021-12-06 23:43:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-12-06 23:43:07,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 788. [2021-12-06 23:43:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.4396442185514613) internal successors, (1133), 787 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:07,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1133 transitions. [2021-12-06 23:43:07,390 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1133 transitions. Word has length 118 [2021-12-06 23:43:07,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:43:07,391 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 1133 transitions. [2021-12-06 23:43:07,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:07,391 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1133 transitions. [2021-12-06 23:43:07,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 23:43:07,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:43:07,392 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:43:07,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 23:43:07,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:43:07,593 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:43:07,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:43:07,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1828816845, now seen corresponding path program 1 times [2021-12-06 23:43:07,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:43:07,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920501650] [2021-12-06 23:43:07,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:43:07,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:43:07,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:43:07,601 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:43:07,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 23:43:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:08,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:43:08,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:43:09,519 INFO L354 Elim1Store]: treesize reduction 1100, result has 5.5 percent of original size [2021-12-06 23:43:09,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 73 [2021-12-06 23:43:09,636 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-06 23:43:09,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 13 [2021-12-06 23:43:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 23:43:09,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:43:09,764 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:43:09,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920501650] [2021-12-06 23:43:09,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920501650] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:43:09,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:43:09,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:43:09,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927189842] [2021-12-06 23:43:09,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:43:09,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:43:09,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:43:09,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:43:09,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:43:09,765 INFO L87 Difference]: Start difference. First operand 788 states and 1133 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:11,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:15,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:43:15,869 INFO L93 Difference]: Finished difference Result 1569 states and 2255 transitions. [2021-12-06 23:43:15,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:43:15,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-06 23:43:15,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:43:15,874 INFO L225 Difference]: With dead ends: 1569 [2021-12-06 23:43:15,875 INFO L226 Difference]: Without dead ends: 788 [2021-12-06 23:43:15,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:43:15,876 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 10 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:43:15,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 442 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 1 Unknown, 18 Unchecked, 6.1s Time] [2021-12-06 23:43:15,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-12-06 23:43:15,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 788. [2021-12-06 23:43:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.434561626429479) internal successors, (1129), 787 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1129 transitions. [2021-12-06 23:43:15,892 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1129 transitions. Word has length 118 [2021-12-06 23:43:15,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:43:15,892 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 1129 transitions. [2021-12-06 23:43:15,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:15,893 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1129 transitions. [2021-12-06 23:43:15,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 23:43:15,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:43:15,897 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:43:15,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-06 23:43:16,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:43:16,098 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:43:16,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:43:16,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1781105215, now seen corresponding path program 1 times [2021-12-06 23:43:16,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:43:16,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147878725] [2021-12-06 23:43:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:43:16,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:43:16,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:43:16,106 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:43:16,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 23:43:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:17,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:43:17,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:43:18,134 INFO L354 Elim1Store]: treesize reduction 1100, result has 5.5 percent of original size [2021-12-06 23:43:18,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 73 [2021-12-06 23:43:18,288 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-06 23:43:18,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 13 [2021-12-06 23:43:18,388 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 23:43:18,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:43:18,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:43:18,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147878725] [2021-12-06 23:43:18,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147878725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:43:18,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:43:18,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:43:18,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728625330] [2021-12-06 23:43:18,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:43:18,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:43:18,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:43:18,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:43:18,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:43:18,390 INFO L87 Difference]: Start difference. First operand 788 states and 1129 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:20,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:25,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:25,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:43:25,483 INFO L93 Difference]: Finished difference Result 1583 states and 2264 transitions. [2021-12-06 23:43:25,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:43:25,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-06 23:43:25,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:43:25,489 INFO L225 Difference]: With dead ends: 1583 [2021-12-06 23:43:25,489 INFO L226 Difference]: Without dead ends: 802 [2021-12-06 23:43:25,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:43:25,490 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 15 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:43:25,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 450 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 1 Unknown, 22 Unchecked, 7.0s Time] [2021-12-06 23:43:25,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-12-06 23:43:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 788. [2021-12-06 23:43:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.4294790343074968) internal successors, (1125), 787 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1125 transitions. [2021-12-06 23:43:25,503 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1125 transitions. Word has length 118 [2021-12-06 23:43:25,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:43:25,503 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 1125 transitions. [2021-12-06 23:43:25,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:25,503 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1125 transitions. [2021-12-06 23:43:25,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-06 23:43:25,505 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:43:25,505 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:43:25,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-06 23:43:25,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:43:25,706 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:43:25,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:43:25,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1012937024, now seen corresponding path program 1 times [2021-12-06 23:43:25,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:43:25,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053189949] [2021-12-06 23:43:25,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:43:25,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:43:25,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:43:25,714 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:43:25,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 23:43:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:27,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:43:27,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:43:27,896 INFO L354 Elim1Store]: treesize reduction 1100, result has 5.5 percent of original size [2021-12-06 23:43:27,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 73 [2021-12-06 23:43:28,026 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-06 23:43:28,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 13 [2021-12-06 23:43:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 23:43:28,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:43:28,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:43:28,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053189949] [2021-12-06 23:43:28,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053189949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:43:28,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:43:28,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:43:28,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287739068] [2021-12-06 23:43:28,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:43:28,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:43:28,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:43:28,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:43:28,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:43:28,123 INFO L87 Difference]: Start difference. First operand 788 states and 1125 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:30,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:33,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:43:33,661 INFO L93 Difference]: Finished difference Result 1583 states and 2256 transitions. [2021-12-06 23:43:33,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:43:33,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-12-06 23:43:33,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:43:33,667 INFO L225 Difference]: With dead ends: 1583 [2021-12-06 23:43:33,667 INFO L226 Difference]: Without dead ends: 802 [2021-12-06 23:43:33,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:43:33,668 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 15 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:43:33,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 450 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 1 Unknown, 24 Unchecked, 5.5s Time] [2021-12-06 23:43:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-12-06 23:43:33,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 788. [2021-12-06 23:43:33,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.4243964421855146) internal successors, (1121), 787 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1121 transitions. [2021-12-06 23:43:33,685 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1121 transitions. Word has length 119 [2021-12-06 23:43:33,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:43:33,685 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 1121 transitions. [2021-12-06 23:43:33,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:33,685 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1121 transitions. [2021-12-06 23:43:33,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-06 23:43:33,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:43:33,687 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:43:33,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 23:43:33,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:43:33,889 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:43:33,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:43:33,892 INFO L85 PathProgramCache]: Analyzing trace with hash 405159276, now seen corresponding path program 1 times [2021-12-06 23:43:33,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:43:33,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216652145] [2021-12-06 23:43:33,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:43:33,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:43:33,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:43:33,898 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:43:33,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 23:43:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:35,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:43:35,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:43:35,807 INFO L354 Elim1Store]: treesize reduction 1100, result has 5.5 percent of original size [2021-12-06 23:43:35,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 73 [2021-12-06 23:43:35,943 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-06 23:43:35,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 13 [2021-12-06 23:43:36,053 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 23:43:36,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:43:36,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:43:36,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216652145] [2021-12-06 23:43:36,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216652145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:43:36,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:43:36,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:43:36,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337970753] [2021-12-06 23:43:36,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:43:36,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:43:36,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:43:36,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:43:36,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:43:36,055 INFO L87 Difference]: Start difference. First operand 788 states and 1121 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:38,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:41,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:42,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:43:42,441 INFO L93 Difference]: Finished difference Result 1569 states and 2231 transitions. [2021-12-06 23:43:42,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:43:42,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-12-06 23:43:42,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:43:42,447 INFO L225 Difference]: With dead ends: 1569 [2021-12-06 23:43:42,447 INFO L226 Difference]: Without dead ends: 788 [2021-12-06 23:43:42,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:43:42,449 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 10 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:43:42,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 442 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 1 Unknown, 18 Unchecked, 6.3s Time] [2021-12-06 23:43:42,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-12-06 23:43:42,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 788. [2021-12-06 23:43:42,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.4193138500635325) internal successors, (1117), 787 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:42,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1117 transitions. [2021-12-06 23:43:42,462 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1117 transitions. Word has length 119 [2021-12-06 23:43:42,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:43:42,463 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 1117 transitions. [2021-12-06 23:43:42,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:42,463 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1117 transitions. [2021-12-06 23:43:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-06 23:43:42,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:43:42,464 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 23:43:42,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-06 23:43:42,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:43:42,666 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:43:42,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:43:42,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1820752595, now seen corresponding path program 1 times [2021-12-06 23:43:42,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:43:42,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371640331] [2021-12-06 23:43:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:43:42,671 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:43:42,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:43:42,673 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:43:42,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 23:43:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:44,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 23:43:44,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:43:44,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:43:44,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:44,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:45,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:45,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:45,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:45,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:45,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:45,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:45,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:45,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:45,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:45,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 69 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 109 [2021-12-06 23:43:47,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:47,441 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:43:47,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 66 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 141 [2021-12-06 23:43:47,992 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:43:47,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 42 [2021-12-06 23:43:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-06 23:43:48,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:43:48,277 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:43:48,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371640331] [2021-12-06 23:43:48,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371640331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:43:48,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:43:48,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:43:48,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342906227] [2021-12-06 23:43:48,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:43:48,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:43:48,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:43:48,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:43:48,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:43:48,279 INFO L87 Difference]: Start difference. First operand 788 states and 1117 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:50,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:50,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:43:50,334 INFO L93 Difference]: Finished difference Result 1419 states and 2013 transitions. [2021-12-06 23:43:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:43:50,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-12-06 23:43:50,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:43:50,339 INFO L225 Difference]: With dead ends: 1419 [2021-12-06 23:43:50,339 INFO L226 Difference]: Without dead ends: 801 [2021-12-06 23:43:50,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:43:50,340 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 8 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:43:50,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 403 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 85 Unchecked, 2.0s Time] [2021-12-06 23:43:50,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-12-06 23:43:50,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 799. [2021-12-06 23:43:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 798 states have (on average 1.4223057644110275) internal successors, (1135), 798 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1135 transitions. [2021-12-06 23:43:50,360 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1135 transitions. Word has length 122 [2021-12-06 23:43:50,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:43:50,360 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1135 transitions. [2021-12-06 23:43:50,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1135 transitions. [2021-12-06 23:43:50,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:43:50,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:43:50,362 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 23:43:50,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-12-06 23:43:50,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:43:50,563 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:43:50,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:43:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash 787843816, now seen corresponding path program 1 times [2021-12-06 23:43:50,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:43:50,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491868406] [2021-12-06 23:43:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:43:50,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:43:50,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:43:50,570 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:43:50,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 23:43:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:43:52,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 23:43:52,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:43:52,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:43:52,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:52,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 69 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 109 [2021-12-06 23:43:55,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:43:55,228 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:43:55,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 66 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 141 [2021-12-06 23:43:55,823 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:43:55,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 42 [2021-12-06 23:43:56,134 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-06 23:43:56,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:43:56,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:43:56,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491868406] [2021-12-06 23:43:56,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491868406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:43:56,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:43:56,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:43:56,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220932622] [2021-12-06 23:43:56,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:43:56,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:43:56,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:43:56,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:43:56,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:43:56,136 INFO L87 Difference]: Start difference. First operand 799 states and 1135 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:58,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:43:58,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:43:58,195 INFO L93 Difference]: Finished difference Result 1420 states and 2014 transitions. [2021-12-06 23:43:58,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:43:58,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-12-06 23:43:58,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:43:58,199 INFO L225 Difference]: With dead ends: 1420 [2021-12-06 23:43:58,199 INFO L226 Difference]: Without dead ends: 802 [2021-12-06 23:43:58,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:43:58,200 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 8 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:43:58,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 401 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 85 Unchecked, 2.0s Time] [2021-12-06 23:43:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-12-06 23:43:58,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 800. [2021-12-06 23:43:58,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 1.4217772215269087) internal successors, (1136), 799 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:58,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1136 transitions. [2021-12-06 23:43:58,217 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1136 transitions. Word has length 123 [2021-12-06 23:43:58,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:43:58,217 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 1136 transitions. [2021-12-06 23:43:58,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:43:58,218 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1136 transitions. [2021-12-06 23:43:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:43:58,219 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:43:58,219 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 23:43:58,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-06 23:43:58,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:43:58,420 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:43:58,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:43:58,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1698524401, now seen corresponding path program 1 times [2021-12-06 23:43:58,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:43:58,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958321722] [2021-12-06 23:43:58,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:43:58,425 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:43:58,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:43:58,428 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:43:58,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-06 23:44:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:00,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 23:44:00,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:44:00,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:44:00,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:00,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 69 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 109 [2021-12-06 23:44:03,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:03,261 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:44:03,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 66 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 141 [2021-12-06 23:44:03,819 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:44:03,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 42 [2021-12-06 23:44:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-06 23:44:04,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:44:04,125 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:44:04,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958321722] [2021-12-06 23:44:04,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958321722] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:44:04,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:44:04,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:44:04,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071933465] [2021-12-06 23:44:04,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:44:04,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:44:04,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:44:04,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:44:04,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:44:04,126 INFO L87 Difference]: Start difference. First operand 800 states and 1136 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:44:06,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:08,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:44:08,266 INFO L93 Difference]: Finished difference Result 1428 states and 2027 transitions. [2021-12-06 23:44:08,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:44:08,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-12-06 23:44:08,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:44:08,270 INFO L225 Difference]: With dead ends: 1428 [2021-12-06 23:44:08,270 INFO L226 Difference]: Without dead ends: 810 [2021-12-06 23:44:08,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:44:08,271 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 10 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:44:08,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 436 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 102 Unchecked, 2.1s Time] [2021-12-06 23:44:08,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2021-12-06 23:44:08,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 808. [2021-12-06 23:44:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 1.4237918215613383) internal successors, (1149), 807 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:44:08,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1149 transitions. [2021-12-06 23:44:08,290 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1149 transitions. Word has length 123 [2021-12-06 23:44:08,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:44:08,290 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 1149 transitions. [2021-12-06 23:44:08,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:44:08,290 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1149 transitions. [2021-12-06 23:44:08,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 23:44:08,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:44:08,292 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 23:44:08,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-12-06 23:44:08,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:44:08,494 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:44:08,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:44:08,495 INFO L85 PathProgramCache]: Analyzing trace with hash -935560660, now seen corresponding path program 1 times [2021-12-06 23:44:08,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:44:08,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809127985] [2021-12-06 23:44:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:44:08,499 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:44:08,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:44:08,501 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:44:08,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-06 23:44:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:44:10,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 23:44:10,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:44:10,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:44:10,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:10,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 69 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 109 [2021-12-06 23:44:13,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:44:13,417 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:44:13,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 66 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 109 treesize of output 141 [2021-12-06 23:44:14,051 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:44:14,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 42 [2021-12-06 23:44:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-06 23:44:14,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:44:14,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:44:14,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809127985] [2021-12-06 23:44:14,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809127985] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:44:14,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:44:14,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:44:14,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839547660] [2021-12-06 23:44:14,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:44:14,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:44:14,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:44:14,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:44:14,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:44:14,365 INFO L87 Difference]: Start difference. First operand 808 states and 1149 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:44:16,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 23:44:16,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:44:16,431 INFO L93 Difference]: Finished difference Result 1429 states and 2028 transitions. [2021-12-06 23:44:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:44:16,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-12-06 23:44:16,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:44:16,435 INFO L225 Difference]: With dead ends: 1429 [2021-12-06 23:44:16,435 INFO L226 Difference]: Without dead ends: 811 [2021-12-06 23:44:16,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:44:16,436 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 9 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:44:16,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 436 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 101 Unchecked, 2.1s Time] [2021-12-06 23:44:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2021-12-06 23:44:16,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 797. [2021-12-06 23:44:16,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 1.420854271356784) internal successors, (1131), 796 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:44:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1131 transitions. [2021-12-06 23:44:16,454 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1131 transitions. Word has length 124 [2021-12-06 23:44:16,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:44:16,454 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 1131 transitions. [2021-12-06 23:44:16,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:44:16,454 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1131 transitions. [2021-12-06 23:44:16,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-06 23:44:16,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:44:16,455 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:44:16,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-12-06 23:44:16,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:44:16,657 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:44:16,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:44:16,658 INFO L85 PathProgramCache]: Analyzing trace with hash -272550210, now seen corresponding path program 1 times [2021-12-06 23:44:16,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:44:16,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600074250] [2021-12-06 23:44:16,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:44:16,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:44:16,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:44:16,664 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:44:16,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-06 23:44:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:44:22,276 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:44:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:44:26,734 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 23:44:26,735 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:44:26,735 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 23:44:26,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-12-06 23:44:26,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:44:26,947 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:44:26,956 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:44:27,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:44:27 BoogieIcfgContainer [2021-12-06 23:44:27,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:44:27,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:44:27,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:44:27,088 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:44:27,088 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:41:21" (3/4) ... [2021-12-06 23:44:27,090 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 23:44:27,210 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 23:44:27,210 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:44:27,210 INFO L158 Benchmark]: Toolchain (without parser) took 194754.99ms. Allocated memory was 58.7MB in the beginning and 111.1MB in the end (delta: 52.4MB). Free memory was 36.9MB in the beginning and 30.3MB in the end (delta: 6.5MB). Peak memory consumption was 60.9MB. Max. memory is 16.1GB. [2021-12-06 23:44:27,211 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 39.7MB in the beginning and 39.6MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:44:27,211 INFO L158 Benchmark]: CACSL2BoogieTranslator took 551.00ms. Allocated memory was 58.7MB in the beginning and 111.1MB in the end (delta: 52.4MB). Free memory was 36.7MB in the beginning and 79.4MB in the end (delta: -42.7MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2021-12-06 23:44:27,211 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.78ms. Allocated memory is still 111.1MB. Free memory was 79.4MB in the beginning and 74.6MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 23:44:27,211 INFO L158 Benchmark]: Boogie Preprocessor took 79.47ms. Allocated memory is still 111.1MB. Free memory was 74.6MB in the beginning and 67.8MB in the end (delta: 6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 23:44:27,212 INFO L158 Benchmark]: RCFGBuilder took 8025.37ms. Allocated memory is still 111.1MB. Free memory was 67.8MB in the beginning and 42.9MB in the end (delta: 24.9MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2021-12-06 23:44:27,212 INFO L158 Benchmark]: TraceAbstraction took 185896.68ms. Allocated memory is still 111.1MB. Free memory was 42.7MB in the beginning and 49.6MB in the end (delta: -6.9MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2021-12-06 23:44:27,212 INFO L158 Benchmark]: Witness Printer took 122.27ms. Allocated memory is still 111.1MB. Free memory was 49.6MB in the beginning and 30.3MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-06 23:44:27,214 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 39.7MB in the beginning and 39.6MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 551.00ms. Allocated memory was 58.7MB in the beginning and 111.1MB in the end (delta: 52.4MB). Free memory was 36.7MB in the beginning and 79.4MB in the end (delta: -42.7MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.78ms. Allocated memory is still 111.1MB. Free memory was 79.4MB in the beginning and 74.6MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.47ms. Allocated memory is still 111.1MB. Free memory was 74.6MB in the beginning and 67.8MB in the end (delta: 6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 8025.37ms. Allocated memory is still 111.1MB. Free memory was 67.8MB in the beginning and 42.9MB in the end (delta: 24.9MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. * TraceAbstraction took 185896.68ms. Allocated memory is still 111.1MB. Free memory was 42.7MB in the beginning and 49.6MB in the end (delta: -6.9MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. * Witness Printer took 122.27ms. Allocated memory is still 111.1MB. Free memory was 49.6MB in the beginning and 30.3MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1658]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1042] static int init = 1; [L1043] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={4:0}] [L1065] SSL *s ; [L1069] s = malloc (sizeof (SSL)) [L1070] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1071] EXPR s->s3 [L1071] s->s3->flags = __VERIFIER_nondet_long() [L1072] EXPR s->s3 [L1072] (s->s3)->tmp.cert_req = __VERIFIER_nondet_int() [L1073] EXPR s->s3 [L1073] (s->s3)->tmp.new_cipher = malloc(sizeof(struct ssl_cipher_st)) [L1074] EXPR s->s3 [L1074] EXPR (s->s3)->tmp.new_cipher [L1074] ((s->s3)->tmp.new_cipher)->algorithms = __VERIFIER_nondet_ulong() [L1075] EXPR s->s3 [L1075] s->s3->tmp.next_state = __VERIFIER_nondet_int() [L1076] s->bbio = (BIO *) __VERIFIER_nondet_ulong() [L1077] s->wbio = (BIO *) __VERIFIER_nondet_ulong() [L1078] s->ctx = malloc(sizeof(SSL_CTX)) [L1079] EXPR s->ctx [L1079] (s->ctx)->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1080] s->state = 12292 [L1081] s->version = __VERIFIER_nondet_int() [L1082] s->init_buf = (BUF_MEM *)__VERIFIER_nondet_ulong() [L1083] s->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1084] CALL ssl3_connect(s) [L1090] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1091] unsigned long tmp ; [L1092] unsigned long l ; [L1093] long num1 ; [L1094] void (*cb)() ; [L1095] int ret ; [L1096] int new_state ; [L1097] int state ; [L1098] int skip ; [L1099] int *tmp___0 ; [L1100] int tmp___1 = __VERIFIER_nondet_int(); [L1101] int tmp___2 = __VERIFIER_nondet_int(); [L1102] int tmp___3 ; [L1103] int tmp___4 ; [L1104] int tmp___5 ; [L1105] int tmp___6 ; [L1106] int tmp___7 ; [L1107] int tmp___8 ; [L1108] long tmp___9 ; [L1110] int blastFlag ; [L1113] blastFlag = 0 [L1114] s->state = 12292 [L1115] s->hit = __VERIFIER_nondet_int() [L1117] tmp = __VERIFIER_nondet_int() [L1118] cb = (void (*)())((void *)0) [L1119] ret = -1 [L1120] skip = 0 [L1121] tmp___0 = (int*)malloc(sizeof(int)) [L1122] *tmp___0 = 0 [L1123] EXPR s->info_callback VAL [={0:0}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, s->info_callback={0:-2147483648}, skip=0, SSLv3_client_data={4:0}, tmp___0={6:0}] [L1123] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1124] EXPR s->info_callback [L1124] cb = s->info_callback [L1132] EXPR s->in_handshake [L1132] s->in_handshake += 1 [L1133] COND FALSE !(tmp___1 & 12288) VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, tmp___0={6:0}, tmp___1=0] [L1143] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, tmp___0={6:0}, tmp___1=0] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, s->state=12292, skip=0, SSLv3_client_data={4:0}, state=12292, tmp___0={6:0}, tmp___1=0] [L1146] COND TRUE s->state == 12292 [L1249] s->new_session = 1 [L1250] s->state = 4096 [L1251] EXPR s->ctx [L1251] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1251] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1256] s->server = 0 VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp___0={6:0}, tmp___1=0] [L1257] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp___0={6:0}, tmp___1=0] [L1262] EXPR s->version VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, s->version=768, skip=0, SSLv3_client_data={4:0}, state=12292, tmp___0={6:0}, tmp___1=0] [L1262] COND FALSE !((s->version & 65280) != 768) [L1268] s->type = 4096 [L1269] EXPR s->init_buf VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, s->init_buf={0:-2147483648}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp___0={6:0}, tmp___1=0] [L1269] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1281] tmp___4 = __VERIFIER_nondet_int() [L1282] COND FALSE !(! tmp___4) [L1288] tmp___5 = __VERIFIER_nondet_int() [L1289] COND FALSE !(! tmp___5) [L1295] s->state = 4368 [L1296] EXPR s->ctx [L1296] EXPR (s->ctx)->stats.sess_connect [L1296] (s->ctx)->stats.sess_connect += 1 [L1297] s->init_num = 0 VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=-2147483648, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, s->s3={5:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1143] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={7:0}, s={7:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1161] COND TRUE s->state == 4368 [L1301] s->shutdown = 0 [L1302] ret = __VERIFIER_nondet_int() [L1303] COND TRUE blastFlag == 0 [L1304] blastFlag = 1 VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1308] COND FALSE !(ret <= 0) [L1313] s->state = 4384 [L1314] s->init_num = 0 [L1315] EXPR s->bbio [L1315] EXPR s->wbio VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->bbio={0:-2147483648}, s->wbio={0:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1315] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=-2147483648, blastFlag=1, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->s3={5:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1143] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1167] COND TRUE s->state == 4384 [L1323] ret = __VERIFIER_nondet_int() [L1324] COND TRUE blastFlag == 1 [L1325] blastFlag = 2 VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1329] COND FALSE !(ret <= 0) [L1334] s->hit VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->hit=0, skip=0, SSLv3_client_data={4:0}, state=4384, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1334] COND FALSE !(s->hit) [L1337] s->state = 4400 VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1339] s->init_num = 0 VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=-2147483648, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->s3={5:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1143] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1173] COND TRUE s->state == 4400 [L1343] EXPR s->s3 [L1343] EXPR (s->s3)->tmp.new_cipher [L1343] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [={0:-2147483648}, ((s->s3)->tmp.new_cipher)->algorithms=0, (s->s3)->tmp.new_cipher={-2147483645:0}, blastFlag=2, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->s3={5:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1343] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1346] ret = __VERIFIER_nondet_int() [L1347] COND TRUE blastFlag == 2 [L1348] blastFlag = 3 VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1352] COND FALSE !(ret <= 0) VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1358] s->state = 4416 [L1359] s->init_num = 0 VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=-2147483648, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->s3={5:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1143] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1179] COND TRUE s->state == 4416 [L1363] ret = __VERIFIER_nondet_int() [L1364] COND TRUE blastFlag == 3 [L1365] blastFlag = 4 VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1369] COND FALSE !(ret <= 0) [L1374] s->state = 4432 [L1375] s->init_num = 0 [L1376] tmp___6 = __VERIFIER_nondet_int() [L1377] COND FALSE !(! tmp___6) VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=-2147483648, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->s3={5:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1143] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1179] COND FALSE !(s->state == 4416) [L1182] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1182] COND FALSE !(s->state == 4417) [L1185] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1185] COND TRUE s->state == 4432 [L1386] ret = __VERIFIER_nondet_int() [L1387] COND FALSE !(blastFlag == 5) VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1392] COND FALSE !(ret <= 0) [L1397] s->state = 4448 [L1398] s->init_num = 0 VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=-2147483648, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->s3={5:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1143] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1179] COND FALSE !(s->state == 4416) [L1182] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1182] COND FALSE !(s->state == 4417) [L1185] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1185] COND FALSE !(s->state == 4432) [L1188] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1188] COND FALSE !(s->state == 4433) [L1191] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={7:0}, s={7:0}, s->state=4448, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1191] COND TRUE s->state == 4448 [L1402] ret = __VERIFIER_nondet_int() [L1403] COND TRUE blastFlag == 4 VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=9, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1658] reach_error() VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=9, s={7:0}, s={7:0}, skip=0, SSLv3_client_data={4:0}, state=4448, tmp___0={6:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 185.7s, OverallIterations: 23, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 115.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 22 mSolverCounterUnknown, 952 SdHoareTripleChecker+Valid, 112.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 952 mSDsluCounter, 9805 SdHoareTripleChecker+Invalid, 109.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 614 IncrementalHoareTripleChecker+Unchecked, 5282 mSDsCounter, 128 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1355 IncrementalHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 128 mSolverCounterUnsat, 4523 mSDtfsCounter, 1355 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2265 GetRequests, 2212 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=808occurred in iteration=21, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 22 MinimizatonAttempts, 298 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 26.4s SatisfiabilityAnalysisTime, 26.6s InterpolantComputationTime, 2410 NumberOfCodeBlocks, 2410 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 2251 ConstructedInterpolants, 56 QuantifiedInterpolants, 8185 SizeOfPredicates, 67 NumberOfNonLiveVariables, 20556 ConjunctsInSsa, 192 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 3098/3098 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! [2021-12-06 23:44:27,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41eed37b-42d7-4c64-9b7d-0e117249242e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE