./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_14.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 808d2f0a6837cfae1b427dacfcde422fbd84ecc3bfe3666ba200189a6ab55331 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:08:11,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:08:11,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:08:11,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:08:11,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:08:11,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:08:11,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:08:11,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:08:11,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:08:11,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:08:11,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:08:11,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:08:11,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:08:11,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:08:11,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:08:11,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:08:11,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:08:11,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:08:11,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:08:11,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:08:11,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:08:11,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:08:11,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:08:11,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:08:11,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:08:11,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:08:11,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:08:11,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:08:11,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:08:11,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:08:11,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:08:11,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:08:11,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:08:11,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:08:11,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:08:11,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:08:11,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:08:11,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:08:11,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:08:11,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:08:11,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:08:11,678 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:08:11,703 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:08:11,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:08:11,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:08:11,704 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:08:11,705 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:08:11,705 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:08:11,705 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:08:11,705 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:08:11,705 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:08:11,706 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:08:11,706 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:08:11,706 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:08:11,706 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:08:11,707 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:08:11,707 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:08:11,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:08:11,708 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:08:11,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:08:11,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:08:11,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:08:11,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:08:11,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:08:11,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:08:11,709 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:08:11,709 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:08:11,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:08:11,710 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:08:11,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:08:11,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:08:11,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:08:11,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:08:11,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:08:11,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:08:11,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:08:11,712 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:08:11,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:08:11,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:08:11,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:08:11,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:08:11,713 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 808d2f0a6837cfae1b427dacfcde422fbd84ecc3bfe3666ba200189a6ab55331 [2021-10-24 10:08:11,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:08:12,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:08:12,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:08:12,019 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:08:12,020 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:08:12,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/openssl-simplified/s3_srvr_14.cil.c [2021-10-24 10:08:12,114 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE/data/91c8d7420/1ef14a568baa497b8ab9a123dcd701a8/FLAGab20ed670 [2021-10-24 10:08:12,690 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:08:12,691 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/sv-benchmarks/c/openssl-simplified/s3_srvr_14.cil.c [2021-10-24 10:08:12,709 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE/data/91c8d7420/1ef14a568baa497b8ab9a123dcd701a8/FLAGab20ed670 [2021-10-24 10:08:12,982 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE/data/91c8d7420/1ef14a568baa497b8ab9a123dcd701a8 [2021-10-24 10:08:12,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:08:12,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:08:12,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:08:12,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:08:12,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:08:12,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:08:12" (1/1) ... [2021-10-24 10:08:12,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29da3d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:12, skipping insertion in model container [2021-10-24 10:08:12,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:08:12" (1/1) ... [2021-10-24 10:08:13,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:08:13,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:08:13,307 WARN L228 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_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/sv-benchmarks/c/openssl-simplified/s3_srvr_14.cil.c[45163,45176] [2021-10-24 10:08:13,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:08:13,323 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:08:13,385 WARN L228 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_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/sv-benchmarks/c/openssl-simplified/s3_srvr_14.cil.c[45163,45176] [2021-10-24 10:08:13,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:08:13,402 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:08:13,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:13 WrapperNode [2021-10-24 10:08:13,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:08:13,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:08:13,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:08:13,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:08:13,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:13" (1/1) ... [2021-10-24 10:08:13,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:13" (1/1) ... [2021-10-24 10:08:13,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:08:13,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:08:13,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:08:13,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:08:13,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:13" (1/1) ... [2021-10-24 10:08:13,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:13" (1/1) ... [2021-10-24 10:08:13,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:13" (1/1) ... [2021-10-24 10:08:13,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:13" (1/1) ... [2021-10-24 10:08:13,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:13" (1/1) ... [2021-10-24 10:08:13,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:13" (1/1) ... [2021-10-24 10:08:13,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:13" (1/1) ... [2021-10-24 10:08:13,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:08:13,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:08:13,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:08:13,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:08:13,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:13" (1/1) ... [2021-10-24 10:08:13,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:08:13,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:08:13,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:08:13,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:08:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:08:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:08:13,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:08:13,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:08:13,832 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-24 10:08:14,404 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-24 10:08:14,405 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-24 10:08:14,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:08:14,759 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-24 10:08:14,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:08:14 BoogieIcfgContainer [2021-10-24 10:08:14,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:08:14,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:08:14,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:08:14,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:08:14,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:08:12" (1/3) ... [2021-10-24 10:08:14,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa486f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:08:14, skipping insertion in model container [2021-10-24 10:08:14,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:13" (2/3) ... [2021-10-24 10:08:14,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa486f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:08:14, skipping insertion in model container [2021-10-24 10:08:14,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:08:14" (3/3) ... [2021-10-24 10:08:14,772 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_14.cil.c [2021-10-24 10:08:14,778 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:08:14,778 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:08:14,832 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:08:14,839 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=FINITE_AUTOMATA, 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 [2021-10-24 10:08:14,840 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:08:14,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 110 states have (on average 1.7818181818181817) internal successors, (196), 111 states have internal predecessors, (196), 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) [2021-10-24 10:08:14,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 10:08:14,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:08:14,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:08:14,869 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:08:14,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:08:14,876 INFO L82 PathProgramCache]: Analyzing trace with hash 583561461, now seen corresponding path program 1 times [2021-10-24 10:08:14,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:08:14,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939836145] [2021-10-24 10:08:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:08:14,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:08:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:08:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:08:15,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:08:15,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939836145] [2021-10-24 10:08:15,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939836145] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:08:15,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:08:15,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:08:15,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753581188] [2021-10-24 10:08:15,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:08:15,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:08:15,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:08:15,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:08:15,099 INFO L87 Difference]: Start difference. First operand has 112 states, 110 states have (on average 1.7818181818181817) internal successors, (196), 111 states have internal predecessors, (196), 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 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-10-24 10:08:15,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:08:15,281 INFO L93 Difference]: Finished difference Result 249 states and 434 transitions. [2021-10-24 10:08:15,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:08:15,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2021-10-24 10:08:15,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:08:15,295 INFO L225 Difference]: With dead ends: 249 [2021-10-24 10:08:15,296 INFO L226 Difference]: Without dead ends: 133 [2021-10-24 10:08:15,299 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:08:15,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-24 10:08:15,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2021-10-24 10:08:15,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.5078125) internal successors, (193), 128 states have internal predecessors, (193), 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) [2021-10-24 10:08:15,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 193 transitions. [2021-10-24 10:08:15,368 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 193 transitions. Word has length 16 [2021-10-24 10:08:15,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:08:15,369 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 193 transitions. [2021-10-24 10:08:15,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-10-24 10:08:15,370 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 193 transitions. [2021-10-24 10:08:15,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-24 10:08:15,371 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:08:15,371 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:08:15,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:08:15,372 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:08:15,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:08:15,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1568848935, now seen corresponding path program 1 times [2021-10-24 10:08:15,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:08:15,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756966731] [2021-10-24 10:08:15,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:08:15,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:08:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:08:15,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:08:15,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:08:15,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756966731] [2021-10-24 10:08:15,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756966731] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:08:15,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:08:15,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:08:15,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756802874] [2021-10-24 10:08:15,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:08:15,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:08:15,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:08:15,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:08:15,510 INFO L87 Difference]: Start difference. First operand 129 states and 193 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-24 10:08:15,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:08:15,693 INFO L93 Difference]: Finished difference Result 148 states and 217 transitions. [2021-10-24 10:08:15,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:08:15,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-10-24 10:08:15,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:08:15,700 INFO L225 Difference]: With dead ends: 148 [2021-10-24 10:08:15,700 INFO L226 Difference]: Without dead ends: 146 [2021-10-24 10:08:15,701 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:08:15,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-24 10:08:15,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 137. [2021-10-24 10:08:15,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.5147058823529411) internal successors, (206), 136 states have internal predecessors, (206), 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) [2021-10-24 10:08:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 206 transitions. [2021-10-24 10:08:15,728 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 206 transitions. Word has length 21 [2021-10-24 10:08:15,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:08:15,729 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 206 transitions. [2021-10-24 10:08:15,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-24 10:08:15,729 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 206 transitions. [2021-10-24 10:08:15,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-24 10:08:15,730 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:08:15,731 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:08:15,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:08:15,731 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:08:15,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:08:15,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1478041189, now seen corresponding path program 1 times [2021-10-24 10:08:15,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:08:15,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123825452] [2021-10-24 10:08:15,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:08:15,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:08:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:08:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:08:15,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:08:15,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123825452] [2021-10-24 10:08:15,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123825452] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:08:15,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:08:15,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:08:15,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819616249] [2021-10-24 10:08:15,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:08:15,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:08:15,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:08:15,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:08:15,826 INFO L87 Difference]: Start difference. First operand 137 states and 206 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2021-10-24 10:08:15,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:08:15,837 INFO L93 Difference]: Finished difference Result 272 states and 410 transitions. [2021-10-24 10:08:15,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:08:15,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2021-10-24 10:08:15,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:08:15,841 INFO L225 Difference]: With dead ends: 272 [2021-10-24 10:08:15,841 INFO L226 Difference]: Without dead ends: 137 [2021-10-24 10:08:15,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:08:15,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-24 10:08:15,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-10-24 10:08:15,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.4926470588235294) internal successors, (203), 136 states have internal predecessors, (203), 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) [2021-10-24 10:08:15,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 203 transitions. [2021-10-24 10:08:15,867 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 203 transitions. Word has length 30 [2021-10-24 10:08:15,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:08:15,867 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 203 transitions. [2021-10-24 10:08:15,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2021-10-24 10:08:15,867 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 203 transitions. [2021-10-24 10:08:15,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-24 10:08:15,869 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:08:15,869 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:08:15,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 10:08:15,869 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:08:15,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:08:15,870 INFO L82 PathProgramCache]: Analyzing trace with hash -710152496, now seen corresponding path program 1 times [2021-10-24 10:08:15,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:08:15,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531941041] [2021-10-24 10:08:15,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:08:15,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:08:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:08:15,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:08:15,967 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:08:15,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531941041] [2021-10-24 10:08:15,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531941041] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:08:15,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:08:15,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:08:15,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616891172] [2021-10-24 10:08:15,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:08:15,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:08:15,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:08:15,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:08:15,969 INFO L87 Difference]: Start difference. First operand 137 states and 203 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-10-24 10:08:15,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:08:15,990 INFO L93 Difference]: Finished difference Result 277 states and 410 transitions. [2021-10-24 10:08:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:08:15,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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 31 [2021-10-24 10:08:15,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:08:15,992 INFO L225 Difference]: With dead ends: 277 [2021-10-24 10:08:15,992 INFO L226 Difference]: Without dead ends: 142 [2021-10-24 10:08:15,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:08:15,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-24 10:08:16,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2021-10-24 10:08:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4642857142857142) internal successors, (205), 140 states have internal predecessors, (205), 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) [2021-10-24 10:08:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 205 transitions. [2021-10-24 10:08:16,003 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 205 transitions. Word has length 31 [2021-10-24 10:08:16,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:08:16,003 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 205 transitions. [2021-10-24 10:08:16,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-10-24 10:08:16,004 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 205 transitions. [2021-10-24 10:08:16,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-24 10:08:16,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:08:16,005 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-24 10:08:16,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 10:08:16,006 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:08:16,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:08:16,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1586002108, now seen corresponding path program 1 times [2021-10-24 10:08:16,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:08:16,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323387085] [2021-10-24 10:08:16,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:08:16,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:08:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:08:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:08:16,071 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:08:16,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323387085] [2021-10-24 10:08:16,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323387085] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:08:16,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:08:16,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:08:16,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987500558] [2021-10-24 10:08:16,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:08:16,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:08:16,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:08:16,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:08:16,074 INFO L87 Difference]: Start difference. First operand 141 states and 205 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-10-24 10:08:16,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:08:16,103 INFO L93 Difference]: Finished difference Result 410 states and 595 transitions. [2021-10-24 10:08:16,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:08:16,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 34 [2021-10-24 10:08:16,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:08:16,107 INFO L225 Difference]: With dead ends: 410 [2021-10-24 10:08:16,107 INFO L226 Difference]: Without dead ends: 271 [2021-10-24 10:08:16,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:08:16,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-10-24 10:08:16,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 264. [2021-10-24 10:08:16,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.456273764258555) internal successors, (383), 263 states have internal predecessors, (383), 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) [2021-10-24 10:08:16,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 383 transitions. [2021-10-24 10:08:16,129 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 383 transitions. Word has length 34 [2021-10-24 10:08:16,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:08:16,129 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 383 transitions. [2021-10-24 10:08:16,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-10-24 10:08:16,130 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 383 transitions. [2021-10-24 10:08:16,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-24 10:08:16,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:08:16,138 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-24 10:08:16,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 10:08:16,139 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:08:16,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:08:16,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1694394513, now seen corresponding path program 1 times [2021-10-24 10:08:16,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:08:16,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491670327] [2021-10-24 10:08:16,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:08:16,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:08:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:08:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:08:16,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:08:16,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491670327] [2021-10-24 10:08:16,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491670327] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:08:16,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:08:16,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:08:16,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601081462] [2021-10-24 10:08:16,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:08:16,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:08:16,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:08:16,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:08:16,237 INFO L87 Difference]: Start difference. First operand 264 states and 383 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2021-10-24 10:08:16,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:08:16,467 INFO L93 Difference]: Finished difference Result 635 states and 948 transitions. [2021-10-24 10:08:16,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:08:16,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 35 [2021-10-24 10:08:16,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:08:16,471 INFO L225 Difference]: With dead ends: 635 [2021-10-24 10:08:16,471 INFO L226 Difference]: Without dead ends: 349 [2021-10-24 10:08:16,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:08:16,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-10-24 10:08:16,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 341. [2021-10-24 10:08:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.423529411764706) internal successors, (484), 340 states have internal predecessors, (484), 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) [2021-10-24 10:08:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 484 transitions. [2021-10-24 10:08:16,499 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 484 transitions. Word has length 35 [2021-10-24 10:08:16,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:08:16,501 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 484 transitions. [2021-10-24 10:08:16,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2021-10-24 10:08:16,502 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 484 transitions. [2021-10-24 10:08:16,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-24 10:08:16,505 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:08:16,506 INFO L512 BasicCegarLoop]: trace histogram [2, 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] [2021-10-24 10:08:16,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 10:08:16,506 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:08:16,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:08:16,507 INFO L82 PathProgramCache]: Analyzing trace with hash -59281900, now seen corresponding path program 1 times [2021-10-24 10:08:16,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:08:16,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498455378] [2021-10-24 10:08:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:08:16,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:08:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:08:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:08:16,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:08:16,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498455378] [2021-10-24 10:08:16,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498455378] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:08:16,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:08:16,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:08:16,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47950329] [2021-10-24 10:08:16,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:08:16,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:08:16,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:08:16,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:08:16,601 INFO L87 Difference]: Start difference. First operand 341 states and 484 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-10-24 10:08:16,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:08:16,784 INFO L93 Difference]: Finished difference Result 834 states and 1214 transitions. [2021-10-24 10:08:16,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:08:16,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2021-10-24 10:08:16,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:08:16,791 INFO L225 Difference]: With dead ends: 834 [2021-10-24 10:08:16,791 INFO L226 Difference]: Without dead ends: 475 [2021-10-24 10:08:16,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:08:16,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2021-10-24 10:08:16,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 447. [2021-10-24 10:08:16,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.405829596412556) internal successors, (627), 446 states have internal predecessors, (627), 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) [2021-10-24 10:08:16,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 627 transitions. [2021-10-24 10:08:16,817 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 627 transitions. Word has length 38 [2021-10-24 10:08:16,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:08:16,819 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 627 transitions. [2021-10-24 10:08:16,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-10-24 10:08:16,820 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 627 transitions. [2021-10-24 10:08:16,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-24 10:08:16,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:08:16,823 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2021-10-24 10:08:16,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-24 10:08:16,823 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:08:16,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:08:16,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1167120788, now seen corresponding path program 1 times [2021-10-24 10:08:16,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:08:16,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583329289] [2021-10-24 10:08:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:08:16,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:08:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:08:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:08:16,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:08:16,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583329289] [2021-10-24 10:08:16,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583329289] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:08:16,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:08:16,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:08:16,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332793330] [2021-10-24 10:08:16,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:08:16,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:08:16,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:08:16,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:08:16,912 INFO L87 Difference]: Start difference. First operand 447 states and 627 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-10-24 10:08:16,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:08:16,947 INFO L93 Difference]: Finished difference Result 1331 states and 1866 transitions. [2021-10-24 10:08:16,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:08:16,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-10-24 10:08:16,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:08:16,955 INFO L225 Difference]: With dead ends: 1331 [2021-10-24 10:08:16,955 INFO L226 Difference]: Without dead ends: 886 [2021-10-24 10:08:16,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:08:16,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2021-10-24 10:08:16,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 667. [2021-10-24 10:08:16,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 666 states have (on average 1.4039039039039038) internal successors, (935), 666 states have internal predecessors, (935), 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) [2021-10-24 10:08:16,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 935 transitions. [2021-10-24 10:08:16,989 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 935 transitions. Word has length 44 [2021-10-24 10:08:16,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:08:16,990 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 935 transitions. [2021-10-24 10:08:16,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-10-24 10:08:16,991 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 935 transitions. [2021-10-24 10:08:16,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-24 10:08:16,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:08:16,993 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2021-10-24 10:08:16,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-24 10:08:16,993 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:08:16,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:08:16,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1527396288, now seen corresponding path program 1 times [2021-10-24 10:08:16,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:08:16,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708332625] [2021-10-24 10:08:16,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:08:16,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:08:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:08:17,051 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:08:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:08:17,140 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:08:17,140 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:08:17,142 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:08:17,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-24 10:08:17,149 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:08:17,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:08:17 BoogieIcfgContainer [2021-10-24 10:08:17,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:08:17,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:08:17,223 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:08:17,223 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:08:17,224 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:08:14" (3/4) ... [2021-10-24 10:08:17,226 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:08:17,344 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:08:17,346 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:08:17,348 INFO L168 Benchmark]: Toolchain (without parser) took 4361.12 ms. Allocated memory was 146.8 MB in the beginning and 176.2 MB in the end (delta: 29.4 MB). Free memory was 112.6 MB in the beginning and 62.6 MB in the end (delta: 50.0 MB). Peak memory consumption was 79.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:08:17,349 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 49.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:08:17,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.38 ms. Allocated memory is still 146.8 MB. Free memory was 112.6 MB in the beginning and 116.7 MB in the end (delta: -4.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:08:17,350 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.75 ms. Allocated memory is still 146.8 MB. Free memory was 116.2 MB in the beginning and 113.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:08:17,351 INFO L168 Benchmark]: Boogie Preprocessor took 43.21 ms. Allocated memory is still 146.8 MB. Free memory was 113.6 MB in the beginning and 111.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:08:17,351 INFO L168 Benchmark]: RCFGBuilder took 1249.98 ms. Allocated memory is still 146.8 MB. Free memory was 111.5 MB in the beginning and 97.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:08:17,352 INFO L168 Benchmark]: TraceAbstraction took 2458.39 ms. Allocated memory was 146.8 MB in the beginning and 176.2 MB in the end (delta: 29.4 MB). Free memory was 96.5 MB in the beginning and 69.9 MB in the end (delta: 26.6 MB). Peak memory consumption was 57.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:08:17,352 INFO L168 Benchmark]: Witness Printer took 123.27 ms. Allocated memory is still 176.2 MB. Free memory was 69.9 MB in the beginning and 62.6 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:08:17,355 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 49.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 415.38 ms. Allocated memory is still 146.8 MB. Free memory was 112.6 MB in the beginning and 116.7 MB in the end (delta: -4.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.75 ms. Allocated memory is still 146.8 MB. Free memory was 116.2 MB in the beginning and 113.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.21 ms. Allocated memory is still 146.8 MB. Free memory was 113.6 MB in the beginning and 111.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1249.98 ms. Allocated memory is still 146.8 MB. Free memory was 111.5 MB in the beginning and 97.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2458.39 ms. Allocated memory was 146.8 MB in the beginning and 176.2 MB in the end (delta: 29.4 MB). Free memory was 96.5 MB in the beginning and 69.9 MB in the end (delta: 26.6 MB). Peak memory consumption was 57.4 MB. Max. memory is 16.1 GB. * Witness Printer took 123.27 ms. Allocated memory is still 176.2 MB. Free memory was 69.9 MB in the beginning and 62.6 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 652]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L657] int s ; [L658] int tmp ; [L662] s = 8464 [L23] int s__info_callback = __VERIFIER_nondet_int() ; [L24] int s__in_handshake = __VERIFIER_nondet_int() ; [L25] int s__state ; [L26] int s__new_session ; [L27] int s__server ; [L28] int s__version = __VERIFIER_nondet_int() ; [L29] int s__type ; [L30] int s__init_num ; [L31] int s__hit = __VERIFIER_nondet_int() ; [L32] int s__rwstate ; [L33] int s__init_buf___0 = 1; [L34] int s__debug = __VERIFIER_nondet_int() ; [L35] int s__shutdown ; [L36] int s__cert = __VERIFIER_nondet_int() ; [L37] int s__options = __VERIFIER_nondet_int() ; [L38] int s__verify_mode = __VERIFIER_nondet_int() ; [L39] int s__session__peer = __VERIFIER_nondet_int() ; [L40] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L41] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L42] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L43] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L44] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L45] int s__s3__tmp__cert_request ; [L46] int s__s3__tmp__reuse_message ; [L47] int s__s3__tmp__use_rsa_tmp ; [L48] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L49] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L50] int s__s3__tmp__next_state___0 ; [L51] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L52] int s__session__cipher ; [L53] int buf ; [L54] unsigned long l ; [L55] unsigned long Time ; [L56] unsigned long tmp ; [L57] int cb ; [L58] long num1 = __VERIFIER_nondet_long() ; [L59] int ret ; [L60] int new_state ; [L61] int state ; [L62] int skip ; [L63] int got_new_session ; [L64] int tmp___1 = __VERIFIER_nondet_int() ; [L65] int tmp___2 = __VERIFIER_nondet_int() ; [L66] int tmp___3 = __VERIFIER_nondet_int() ; [L67] int tmp___4 = __VERIFIER_nondet_int() ; [L68] int tmp___5 = __VERIFIER_nondet_int() ; [L69] int tmp___6 = __VERIFIER_nondet_int() ; [L70] int tmp___7 ; [L71] long tmp___8 = __VERIFIER_nondet_long() ; [L72] int tmp___9 = __VERIFIER_nondet_int() ; [L73] int tmp___10 = __VERIFIER_nondet_int() ; [L74] int blastFlag ; [L75] int __cil_tmp55 ; [L76] unsigned long __cil_tmp56 ; [L77] unsigned long __cil_tmp57 ; [L78] unsigned long __cil_tmp58 ; [L79] unsigned long __cil_tmp59 ; [L80] int __cil_tmp60 ; [L81] unsigned long __cil_tmp61 ; [L84] s__s3__tmp__reuse_message = 0 [L85] s__state = initial_state [L86] blastFlag = 0 [L87] tmp = __VERIFIER_nondet_int() [L88] Time = tmp [L89] cb = 0 [L90] ret = -1 [L91] skip = 0 [L92] got_new_session = 0 [L93] COND FALSE !(s__info_callback != 0) [L96] COND FALSE !(s__ctx__info_callback != 0) [L100] s__in_handshake ++ [L101] COND TRUE tmp___1 + 12288 [L102] COND TRUE tmp___2 + 16384 [L106] COND FALSE !(s__cert == 0) [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 8192) [L122] COND FALSE !(s__state == 24576) [L125] COND FALSE !(s__state == 8195) [L128] COND FALSE !(s__state == 8480) [L131] COND FALSE !(s__state == 8481) [L134] COND FALSE !(s__state == 8482) [L137] COND TRUE s__state == 8464 [L283] s__shutdown = 0 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 0 [L286] blastFlag = 1 [L288] COND FALSE !(ret <= 0) [L291] got_new_session = 1 [L292] s__state = 8496 [L293] s__init_num = 0 [L614] COND TRUE ! s__s3__tmp__reuse_message [L615] COND TRUE ! skip [L616] COND TRUE tmp___1 != -12288 [L617] COND TRUE s__state != 8656 [L618] COND TRUE tmp___2 != -16384 [L619] COND FALSE !(state == 8496) [L626] COND FALSE !(\read(s__debug)) [L632] COND FALSE !(cb != 0) [L641] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 8192) [L122] COND FALSE !(s__state == 24576) [L125] COND FALSE !(s__state == 8195) [L128] COND FALSE !(s__state == 8480) [L131] COND FALSE !(s__state == 8481) [L134] COND FALSE !(s__state == 8482) [L137] COND FALSE !(s__state == 8464) [L140] COND FALSE !(s__state == 8465) [L143] COND FALSE !(s__state == 8466) [L146] COND TRUE s__state == 8496 [L297] ret = __VERIFIER_nondet_int() [L298] COND TRUE blastFlag == 1 [L299] blastFlag = 2 [L301] COND FALSE !(ret <= 0) [L304] COND FALSE !(\read(s__hit)) [L307] s__state = 8512 [L309] s__init_num = 0 [L614] COND TRUE ! s__s3__tmp__reuse_message [L615] COND TRUE ! skip [L616] COND TRUE tmp___1 != -12288 [L617] COND TRUE s__state != 8656 [L618] COND TRUE tmp___2 != -16384 [L619] COND TRUE state == 8496 [L652] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 112 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2318.4ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 32.9ms, AutomataDifference: 965.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1438 SDtfs, 831 SDslu, 767 SDs, 0 SdLazy, 474 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 474.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=667occurred in iteration=8, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 215.3ms AutomataMinimizationTime, 8 MinimizatonAttempts, 276 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 56.9ms SsaConstructionTime, 272.5ms SatisfiabilityAnalysisTime, 449.0ms InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 525 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 45/45 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! [2021-10-24 10:08:17,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d6e2ce-c3e9-4636-8286-88d7f3b7a97d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...