./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.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_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/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_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/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_3e7e41a3-648c-403f-82c6-2e13e9a6be40/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 9bbd8ebbfdd1aa7b2aaa2f32f767526fd317d11dcf6b707f4c34423040b4383f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:27:23,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:27:23,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:27:24,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:27:24,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:27:24,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:27:24,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:27:24,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:27:24,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:27:24,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:27:24,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:27:24,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:27:24,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:27:24,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:27:24,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:27:24,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:27:24,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:27:24,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:27:24,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:27:24,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:27:24,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:27:24,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:27:24,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:27:24,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:27:24,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:27:24,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:27:24,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:27:24,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:27:24,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:27:24,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:27:24,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:27:24,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:27:24,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:27:24,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:27:24,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:27:24,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:27:24,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:27:24,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:27:24,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:27:24,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:27:24,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:27:24,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:27:24,172 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:27:24,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:27:24,173 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:27:24,174 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:27:24,174 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:27:24,174 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:27:24,174 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:27:24,175 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:27:24,175 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:27:24,175 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:27:24,176 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:27:24,176 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:27:24,176 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:27:24,176 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:27:24,177 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:27:24,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:27:24,178 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:27:24,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:27:24,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:27:24,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:27:24,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:27:24,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:27:24,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:27:24,180 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:27:24,180 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:27:24,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:27:24,181 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:27:24,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:27:24,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:27:24,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:27:24,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:27:24,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:27:24,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:27:24,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:27:24,183 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:27:24,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:27:24,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:27:24,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:27:24,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:27:24,184 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_3e7e41a3-648c-403f-82c6-2e13e9a6be40/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bbd8ebbfdd1aa7b2aaa2f32f767526fd317d11dcf6b707f4c34423040b4383f [2021-10-24 10:27:24,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:27:24,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:27:24,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:27:24,500 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:27:24,501 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:27:24,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c [2021-10-24 10:27:24,575 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/data/92165c4e6/a909951b1e9c4348bd6351e4737ba57a/FLAGb5c15624b [2021-10-24 10:27:25,082 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:27:25,082 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c [2021-10-24 10:27:25,098 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/data/92165c4e6/a909951b1e9c4348bd6351e4737ba57a/FLAGb5c15624b [2021-10-24 10:27:25,448 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/data/92165c4e6/a909951b1e9c4348bd6351e4737ba57a [2021-10-24 10:27:25,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:27:25,456 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:27:25,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:27:25,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:27:25,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:27:25,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:27:25" (1/1) ... [2021-10-24 10:27:25,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c642dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:27:25, skipping insertion in model container [2021-10-24 10:27:25,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:27:25" (1/1) ... [2021-10-24 10:27:25,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:27:25,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:27:25,805 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_3e7e41a3-648c-403f-82c6-2e13e9a6be40/sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c[14184,14197] [2021-10-24 10:27:25,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:27:25,823 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:27:25,864 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_3e7e41a3-648c-403f-82c6-2e13e9a6be40/sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c[14184,14197] [2021-10-24 10:27:25,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:27:25,885 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:27:25,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:27:25 WrapperNode [2021-10-24 10:27:25,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:27:25,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:27:25,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:27:25,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:27:25,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:27:25" (1/1) ... [2021-10-24 10:27:25,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:27:25" (1/1) ... [2021-10-24 10:27:25,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:27:25,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:27:25,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:27:25,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:27:25,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:27:25" (1/1) ... [2021-10-24 10:27:25,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:27:25" (1/1) ... [2021-10-24 10:27:25,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:27:25" (1/1) ... [2021-10-24 10:27:25,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:27:25" (1/1) ... [2021-10-24 10:27:25,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:27:25" (1/1) ... [2021-10-24 10:27:25,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:27:25" (1/1) ... [2021-10-24 10:27:25,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:27:25" (1/1) ... [2021-10-24 10:27:25,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:27:26,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:27:26,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:27:26,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:27:26,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:27:25" (1/1) ... [2021-10-24 10:27:26,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:27:26,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:27:26,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:27:26,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:27:26,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:27:26,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:27:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:27:26,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:27:26,678 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:27:26,678 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-24 10:27:26,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:27:26 BoogieIcfgContainer [2021-10-24 10:27:26,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:27:26,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:27:26,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:27:26,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:27:26,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:27:25" (1/3) ... [2021-10-24 10:27:26,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a53857f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:27:26, skipping insertion in model container [2021-10-24 10:27:26,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:27:25" (2/3) ... [2021-10-24 10:27:26,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a53857f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:27:26, skipping insertion in model container [2021-10-24 10:27:26,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:27:26" (3/3) ... [2021-10-24 10:27:26,703 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2021-10-24 10:27:26,713 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:27:26,714 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:27:26,767 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:27:26,774 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 10:27:26,775 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:27:26,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 29 states have internal predecessors, (52), 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 10:27:26,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 10:27:26,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:27:26,797 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 10:27:26,797 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:27:26,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:27:26,804 INFO L82 PathProgramCache]: Analyzing trace with hash 6922709, now seen corresponding path program 1 times [2021-10-24 10:27:26,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:27:26,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122633464] [2021-10-24 10:27:26,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:27:26,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:27:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:27:27,017 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 10:27:27,017 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:27:27,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122633464] [2021-10-24 10:27:27,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122633464] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:27:27,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:27:27,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:27:27,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959558517] [2021-10-24 10:27:27,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:27:27,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:27:27,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:27:27,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:27:27,052 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 29 states have internal predecessors, (52), 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 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 10:27:27,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:27:27,175 INFO L93 Difference]: Finished difference Result 86 states and 152 transitions. [2021-10-24 10:27:27,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:27:27,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-10-24 10:27:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:27:27,190 INFO L225 Difference]: With dead ends: 86 [2021-10-24 10:27:27,191 INFO L226 Difference]: Without dead ends: 51 [2021-10-24 10:27:27,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:27:27,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-24 10:27:27,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-24 10:27:27,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.7) internal successors, (85), 50 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) [2021-10-24 10:27:27,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 85 transitions. [2021-10-24 10:27:27,242 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 85 transitions. Word has length 4 [2021-10-24 10:27:27,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:27:27,243 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 85 transitions. [2021-10-24 10:27:27,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 10:27:27,243 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 85 transitions. [2021-10-24 10:27:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 10:27:27,244 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:27:27,244 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-24 10:27:27,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:27:27,245 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:27:27,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:27:27,251 INFO L82 PathProgramCache]: Analyzing trace with hash 78566834, now seen corresponding path program 1 times [2021-10-24 10:27:27,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:27:27,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546000584] [2021-10-24 10:27:27,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:27:27,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:27:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:27:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:27:27,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:27:27,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546000584] [2021-10-24 10:27:27,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546000584] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 10:27:27,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395401192] [2021-10-24 10:27:27,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:27:27,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:27:27,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:27:27,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:27:27,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:27:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:27:27,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 10:27:27,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:27:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:27:27,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:27:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 10:27:27,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395401192] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-24 10:27:27,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:27:27,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 4 [2021-10-24 10:27:27,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503062942] [2021-10-24 10:27:27,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:27:27,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:27:27,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:27:27,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:27:27,604 INFO L87 Difference]: Start difference. First operand 51 states and 85 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 10:27:27,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:27:27,654 INFO L93 Difference]: Finished difference Result 125 states and 212 transitions. [2021-10-24 10:27:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:27:27,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 7 [2021-10-24 10:27:27,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:27:27,657 INFO L225 Difference]: With dead ends: 125 [2021-10-24 10:27:27,658 INFO L226 Difference]: Without dead ends: 99 [2021-10-24 10:27:27,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:27:27,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-24 10:27:27,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-10-24 10:27:27,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.683673469387755) internal successors, (165), 98 states have internal predecessors, (165), 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 10:27:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 165 transitions. [2021-10-24 10:27:27,679 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 165 transitions. Word has length 7 [2021-10-24 10:27:27,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:27:27,679 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 165 transitions. [2021-10-24 10:27:27,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 10:27:27,680 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 165 transitions. [2021-10-24 10:27:27,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-24 10:27:27,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:27:27,681 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:27:27,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:27:27,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-24 10:27:27,883 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:27:27,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:27:27,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1370706601, now seen corresponding path program 1 times [2021-10-24 10:27:27,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:27:27,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510046169] [2021-10-24 10:27:27,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:27:27,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:27:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:27:27,937 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 10:27:27,938 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:27:27,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510046169] [2021-10-24 10:27:27,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510046169] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:27:27,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:27:27,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:27:27,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179478723] [2021-10-24 10:27:27,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:27:27,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:27:27,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:27:27,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:27:27,941 INFO L87 Difference]: Start difference. First operand 99 states and 165 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 10:27:27,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:27:27,996 INFO L93 Difference]: Finished difference Result 152 states and 253 transitions. [2021-10-24 10:27:27,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:27:27,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 20 [2021-10-24 10:27:27,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:27:27,998 INFO L225 Difference]: With dead ends: 152 [2021-10-24 10:27:27,998 INFO L226 Difference]: Without dead ends: 54 [2021-10-24 10:27:27,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:27:28,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-24 10:27:28,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-24 10:27:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 53 states have internal predecessors, (88), 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 10:27:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 88 transitions. [2021-10-24 10:27:28,009 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 88 transitions. Word has length 20 [2021-10-24 10:27:28,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:27:28,010 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 88 transitions. [2021-10-24 10:27:28,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 10:27:28,010 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 88 transitions. [2021-10-24 10:27:28,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-24 10:27:28,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:27:28,012 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:27:28,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 10:27:28,012 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:27:28,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:27:28,013 INFO L82 PathProgramCache]: Analyzing trace with hash 2079797139, now seen corresponding path program 2 times [2021-10-24 10:27:28,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:27:28,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514956306] [2021-10-24 10:27:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:27:28,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:27:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:27:28,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:27:28,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:27:28,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514956306] [2021-10-24 10:27:28,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514956306] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:27:28,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:27:28,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:27:28,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50178866] [2021-10-24 10:27:28,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:27:28,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:27:28,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:27:28,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:27:28,059 INFO L87 Difference]: Start difference. First operand 54 states and 88 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 10:27:28,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:27:28,115 INFO L93 Difference]: Finished difference Result 114 states and 186 transitions. [2021-10-24 10:27:28,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:27:28,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2021-10-24 10:27:28,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:27:28,118 INFO L225 Difference]: With dead ends: 114 [2021-10-24 10:27:28,118 INFO L226 Difference]: Without dead ends: 64 [2021-10-24 10:27:28,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:27:28,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-24 10:27:28,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2021-10-24 10:27:28,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.5901639344262295) internal successors, (97), 61 states have internal predecessors, (97), 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 10:27:28,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 97 transitions. [2021-10-24 10:27:28,129 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 97 transitions. Word has length 20 [2021-10-24 10:27:28,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:27:28,129 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 97 transitions. [2021-10-24 10:27:28,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 10:27:28,130 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 97 transitions. [2021-10-24 10:27:28,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-24 10:27:28,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:27:28,131 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:27:28,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 10:27:28,132 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:27:28,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:27:28,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1981112723, now seen corresponding path program 1 times [2021-10-24 10:27:28,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:27:28,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065251892] [2021-10-24 10:27:28,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:27:28,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:27:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:27:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-24 10:27:28,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:27:28,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065251892] [2021-10-24 10:27:28,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065251892] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:27:28,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:27:28,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:27:28,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828807453] [2021-10-24 10:27:28,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:27:28,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:27:28,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:27:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:27:28,192 INFO L87 Difference]: Start difference. First operand 62 states and 97 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 10:27:28,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:27:28,293 INFO L93 Difference]: Finished difference Result 108 states and 173 transitions. [2021-10-24 10:27:28,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:27:28,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 [2021-10-24 10:27:28,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:27:28,295 INFO L225 Difference]: With dead ends: 108 [2021-10-24 10:27:28,296 INFO L226 Difference]: Without dead ends: 78 [2021-10-24 10:27:28,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:27:28,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-24 10:27:28,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2021-10-24 10:27:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4864864864864864) internal successors, (110), 74 states have internal predecessors, (110), 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 10:27:28,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 110 transitions. [2021-10-24 10:27:28,307 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 110 transitions. Word has length 24 [2021-10-24 10:27:28,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:27:28,308 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 110 transitions. [2021-10-24 10:27:28,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 10:27:28,308 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 110 transitions. [2021-10-24 10:27:28,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-24 10:27:28,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:27:28,310 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:27:28,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 10:27:28,311 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:27:28,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:27:28,311 INFO L82 PathProgramCache]: Analyzing trace with hash 516459890, now seen corresponding path program 1 times [2021-10-24 10:27:28,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:27:28,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187316120] [2021-10-24 10:27:28,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:27:28,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:27:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:27:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:27:28,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:27:28,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187316120] [2021-10-24 10:27:28,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187316120] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 10:27:28,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508739098] [2021-10-24 10:27:28,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:27:28,431 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:27:28,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:27:28,437 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:27:28,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 10:27:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:27:28,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 10:27:28,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:27:28,713 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:27:28,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:27:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-24 10:27:28,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508739098] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-24 10:27:28,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:27:28,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 7 [2021-10-24 10:27:28,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827663778] [2021-10-24 10:27:28,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:27:28,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:27:28,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:27:28,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:27:28,892 INFO L87 Difference]: Start difference. First operand 75 states and 110 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 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 10:27:28,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:27:28,939 INFO L93 Difference]: Finished difference Result 120 states and 173 transitions. [2021-10-24 10:27:28,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:27:28,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 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 38 [2021-10-24 10:27:28,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:27:28,941 INFO L225 Difference]: With dead ends: 120 [2021-10-24 10:27:28,941 INFO L226 Difference]: Without dead ends: 118 [2021-10-24 10:27:28,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:27:28,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-24 10:27:28,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2021-10-24 10:27:28,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.4782608695652173) internal successors, (170), 115 states have internal predecessors, (170), 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 10:27:28,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 170 transitions. [2021-10-24 10:27:28,955 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 170 transitions. Word has length 38 [2021-10-24 10:27:28,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:27:28,956 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 170 transitions. [2021-10-24 10:27:28,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 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 10:27:28,957 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 170 transitions. [2021-10-24 10:27:28,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-24 10:27:28,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:27:28,958 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:27:28,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:27:29,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:27:29,165 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:27:29,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:27:29,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1900093657, now seen corresponding path program 1 times [2021-10-24 10:27:29,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:27:29,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42492213] [2021-10-24 10:27:29,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:27:29,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:27:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:27:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:27:29,253 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:27:29,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42492213] [2021-10-24 10:27:29,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42492213] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 10:27:29,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385046489] [2021-10-24 10:27:29,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:27:29,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:27:29,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:27:29,266 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:27:29,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 10:27:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:27:29,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:27:29,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:27:29,479 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-24 10:27:29,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:27:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-24 10:27:29,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385046489] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:27:29,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 10:27:29,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 8 [2021-10-24 10:27:29,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896934478] [2021-10-24 10:27:29,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:27:29,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:27:29,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:27:29,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:27:29,562 INFO L87 Difference]: Start difference. First operand 116 states and 170 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 10:27:29,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:27:29,672 INFO L93 Difference]: Finished difference Result 236 states and 354 transitions. [2021-10-24 10:27:29,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:27:29,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 [2021-10-24 10:27:29,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:27:29,674 INFO L225 Difference]: With dead ends: 236 [2021-10-24 10:27:29,674 INFO L226 Difference]: Without dead ends: 124 [2021-10-24 10:27:29,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 34.9ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:27:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-24 10:27:29,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2021-10-24 10:27:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 111 states have internal predecessors, (134), 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 10:27:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2021-10-24 10:27:29,688 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 40 [2021-10-24 10:27:29,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:27:29,689 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2021-10-24 10:27:29,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 10:27:29,689 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2021-10-24 10:27:29,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-24 10:27:29,691 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:27:29,692 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:27:29,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:27:29,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:27:29,913 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:27:29,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:27:29,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1902950406, now seen corresponding path program 1 times [2021-10-24 10:27:29,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:27:29,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544889945] [2021-10-24 10:27:29,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:27:29,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:27:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:27:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:27:30,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:27:30,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544889945] [2021-10-24 10:27:30,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544889945] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 10:27:30,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870235298] [2021-10-24 10:27:30,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:27:30,044 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:27:30,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:27:30,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:27:30,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-24 10:27:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:27:30,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:27:30,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:27:30,319 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-24 10:27:30,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:27:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-24 10:27:30,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870235298] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:27:30,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 10:27:30,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 8 [2021-10-24 10:27:30,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625328857] [2021-10-24 10:27:30,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:27:30,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:27:30,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:27:30,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:27:30,463 INFO L87 Difference]: Start difference. First operand 112 states and 134 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 10:27:30,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:27:30,594 INFO L93 Difference]: Finished difference Result 246 states and 291 transitions. [2021-10-24 10:27:30,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:27:30,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 54 [2021-10-24 10:27:30,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:27:30,598 INFO L225 Difference]: With dead ends: 246 [2021-10-24 10:27:30,598 INFO L226 Difference]: Without dead ends: 155 [2021-10-24 10:27:30,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:27:30,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-24 10:27:30,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2021-10-24 10:27:30,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.21875) internal successors, (156), 128 states have internal predecessors, (156), 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 10:27:30,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 156 transitions. [2021-10-24 10:27:30,629 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 156 transitions. Word has length 54 [2021-10-24 10:27:30,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:27:30,630 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 156 transitions. [2021-10-24 10:27:30,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 10:27:30,630 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 156 transitions. [2021-10-24 10:27:30,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-24 10:27:30,642 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:27:30,642 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:27:30,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-24 10:27:30,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:27:30,857 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:27:30,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:27:30,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1551020902, now seen corresponding path program 1 times [2021-10-24 10:27:30,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:27:30,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059086963] [2021-10-24 10:27:30,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:27:30,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:27:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:27:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 99 proven. 30 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-24 10:27:30,933 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:27:30,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059086963] [2021-10-24 10:27:30,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059086963] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 10:27:30,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733991170] [2021-10-24 10:27:30,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:27:30,936 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:27:30,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:27:30,941 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:27:30,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-24 10:27:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:27:31,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:27:31,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:27:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-24 10:27:31,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:27:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-24 10:27:31,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733991170] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:27:31,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 10:27:31,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-24 10:27:31,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596674747] [2021-10-24 10:27:31,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:27:31,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:27:31,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:27:31,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:27:31,586 INFO L87 Difference]: Start difference. First operand 129 states and 156 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 10:27:31,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:27:31,604 INFO L93 Difference]: Finished difference Result 199 states and 228 transitions. [2021-10-24 10:27:31,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:27:31,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 80 [2021-10-24 10:27:31,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:27:31,608 INFO L225 Difference]: With dead ends: 199 [2021-10-24 10:27:31,609 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:27:31,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.9ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:27:31,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:27:31,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:27:31,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 10:27:31,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:27:31,613 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2021-10-24 10:27:31,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:27:31,614 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:27:31,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 10:27:31,614 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:27:31,614 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:27:31,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:27:31,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:27:31,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:27:31,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:27:31,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:31,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:31,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:31,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:31,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:31,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:31,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:31,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:31,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:31,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:31,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:31,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:31,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:31,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:32,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:32,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:32,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:32,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:27:32,463 INFO L860 garLoopResultBuilder]: At program point L225(lines 20 229) the Hoare annotation is: true [2021-10-24 10:27:32,463 INFO L857 garLoopResultBuilder]: For program point L126(lines 126 130) no Hoare annotation was computed. [2021-10-24 10:27:32,464 INFO L853 garLoopResultBuilder]: At program point L60(lines 60 207) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-24 10:27:32,464 INFO L857 garLoopResultBuilder]: For program point L184(lines 184 186) no Hoare annotation was computed. [2021-10-24 10:27:32,464 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 122) no Hoare annotation was computed. [2021-10-24 10:27:32,464 INFO L853 garLoopResultBuilder]: At program point L85(lines 84 195) the Hoare annotation is: (and (<= 8672 ULTIMATE.start_main_~s__state~0) (< ULTIMATE.start_main_~blastFlag~0 5)) [2021-10-24 10:27:32,464 INFO L853 garLoopResultBuilder]: At program point L52(lines 52 211) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-24 10:27:32,465 INFO L853 garLoopResultBuilder]: At program point L44(lines 44 215) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-24 10:27:32,465 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:27:32,465 INFO L853 garLoopResultBuilder]: At program point L185(lines 20 229) the Hoare annotation is: false [2021-10-24 10:27:32,465 INFO L860 garLoopResultBuilder]: At program point L228(lines 20 229) the Hoare annotation is: true [2021-10-24 10:27:32,465 INFO L853 garLoopResultBuilder]: At program point L80(lines 80 197) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-24 10:27:32,466 INFO L853 garLoopResultBuilder]: At program point L72(lines 72 201) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-24 10:27:32,466 INFO L857 garLoopResultBuilder]: For program point L163-1(lines 86 195) no Hoare annotation was computed. [2021-10-24 10:27:32,466 INFO L853 garLoopResultBuilder]: At program point L64(lines 64 205) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-24 10:27:32,466 INFO L853 garLoopResultBuilder]: At program point L188(lines 34 223) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-24 10:27:32,466 INFO L857 garLoopResultBuilder]: For program point L56(lines 56 209) no Hoare annotation was computed. [2021-10-24 10:27:32,467 INFO L853 garLoopResultBuilder]: At program point L48(lines 48 213) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-24 10:27:32,467 INFO L853 garLoopResultBuilder]: At program point L57(lines 56 209) the Hoare annotation is: (and (< 8512 ULTIMATE.start_main_~s__state~0) (<= ULTIMATE.start_main_~blastFlag~0 2) (<= ULTIMATE.start_main_~s__state~0 8640)) [2021-10-24 10:27:32,467 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 227) no Hoare annotation was computed. [2021-10-24 10:27:32,467 INFO L857 garLoopResultBuilder]: For program point L181-1(lines 86 195) no Hoare annotation was computed. [2021-10-24 10:27:32,467 INFO L853 garLoopResultBuilder]: At program point L41(lines 41 216) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-24 10:27:32,468 INFO L853 garLoopResultBuilder]: At program point L132(lines 125 134) the Hoare annotation is: (and (< 8512 ULTIMATE.start_main_~s__state~0) (<= ULTIMATE.start_main_~blastFlag~0 2) (<= ULTIMATE.start_main_~s__state~0 8640)) [2021-10-24 10:27:32,468 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:27:32,468 INFO L853 garLoopResultBuilder]: At program point L124(lines 117 135) the Hoare annotation is: (and (< 8512 ULTIMATE.start_main_~s__state~0) (<= ULTIMATE.start_main_~blastFlag~0 2) (<= ULTIMATE.start_main_~s__state~0 8640)) [2021-10-24 10:27:32,468 INFO L857 garLoopResultBuilder]: For program point L117(lines 117 135) no Hoare annotation was computed. [2021-10-24 10:27:32,468 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 195) no Hoare annotation was computed. [2021-10-24 10:27:32,468 INFO L853 garLoopResultBuilder]: At program point L76(lines 76 199) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-24 10:27:32,469 INFO L853 garLoopResultBuilder]: At program point L68(lines 68 203) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0)) (<= ULTIMATE.start_main_~s__state~0 8640)) (<= ULTIMATE.start_main_~blastFlag~0 2) (and (< ULTIMATE.start_main_~blastFlag~0 5) .cse0))) [2021-10-24 10:27:32,469 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-24 10:27:32,473 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:27:32,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:27:32 BoogieIcfgContainer [2021-10-24 10:27:32,514 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:27:32,514 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:27:32,515 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:27:32,515 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:27:32,515 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:27:26" (3/4) ... [2021-10-24 10:27:32,518 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:27:32,547 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-24 10:27:32,547 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-24 10:27:32,547 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:27:32,548 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:27:32,623 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:27:32,623 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:27:32,625 INFO L168 Benchmark]: Toolchain (without parser) took 7167.33 ms. Allocated memory was 88.1 MB in the beginning and 144.7 MB in the end (delta: 56.6 MB). Free memory was 51.4 MB in the beginning and 57.2 MB in the end (delta: -5.8 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:27:32,625 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 67.8 MB in the beginning and 67.7 MB in the end (delta: 55.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:27:32,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.74 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 51.2 MB in the beginning and 94.6 MB in the end (delta: -43.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:27:32,627 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.52 ms. Allocated memory is still 119.5 MB. Free memory was 94.6 MB in the beginning and 92.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:27:32,627 INFO L168 Benchmark]: Boogie Preprocessor took 61.24 ms. Allocated memory is still 119.5 MB. Free memory was 92.9 MB in the beginning and 91.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:27:32,627 INFO L168 Benchmark]: RCFGBuilder took 680.97 ms. Allocated memory is still 119.5 MB. Free memory was 91.7 MB in the beginning and 74.4 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:27:32,628 INFO L168 Benchmark]: TraceAbstraction took 5825.82 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 74.0 MB in the beginning and 61.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:27:32,628 INFO L168 Benchmark]: Witness Printer took 108.56 ms. Allocated memory is still 144.7 MB. Free memory was 61.1 MB in the beginning and 57.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:27:32,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 67.8 MB in the beginning and 67.7 MB in the end (delta: 55.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 424.74 ms. Allocated memory was 88.1 MB in the beginning and 119.5 MB in the end (delta: 31.5 MB). Free memory was 51.2 MB in the beginning and 94.6 MB in the end (delta: -43.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.52 ms. Allocated memory is still 119.5 MB. Free memory was 94.6 MB in the beginning and 92.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.24 ms. Allocated memory is still 119.5 MB. Free memory was 92.9 MB in the beginning and 91.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 680.97 ms. Allocated memory is still 119.5 MB. Free memory was 91.7 MB in the beginning and 74.4 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5825.82 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 74.0 MB in the beginning and 61.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. * Witness Printer took 108.56 ms. Allocated memory is still 144.7 MB. Free memory was 61.1 MB in the beginning and 57.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 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 - PositiveResult [Line: 227]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5708.2ms, OverallIterations: 9, TraceHistogramMax: 7, EmptinessCheckTime: 30.6ms, AutomataDifference: 780.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 621.3ms, InitialAbstractionConstructionTime: 11.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 374 SDtfs, 173 SDslu, 196 SDs, 0 SdLazy, 314 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 377.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 461 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 163.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=8, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 138.6ms AutomataMinimizationTime, 9 MinimizatonAttempts, 45 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 18 LocationsWithAnnotation, 18 PreInvPairs, 108 NumberOfFragments, 278 HoareAnnotationTreeSize, 18 FomulaSimplifications, 870 FormulaSimplificationTreeSizeReduction, 178.1ms HoareSimplificationTime, 18 FomulaSimplificationsInter, 456 FormulaSimplificationTreeSizeReductionInter, 431.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 68.9ms SsaConstructionTime, 297.8ms SatisfiabilityAnalysisTime, 2015.5ms InterpolantComputationTime, 506 NumberOfCodeBlocks, 506 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 706 ConstructedInterpolants, 0 QuantifiedInterpolants, 1326 SizeOfPredicates, 0 NumberOfNonLiveVariables, 512 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 19 InterpolantComputations, 12 PerfectInterpolantSequences, 779/933 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 8672 <= s__state && blastFlag < 5 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: (8512 < s__state && blastFlag <= 2) && s__state <= 8640 - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: ((8640 <= s__state && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 117]: Loop Invariant Derived loop invariant: (8512 < s__state && blastFlag <= 2) && s__state <= 8640 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: (8512 < s__state && blastFlag <= 2) && s__state <= 8640 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((8640 <= s__state && !(s__hit == 0)) && s__state <= 8640) || blastFlag <= 2) || (blastFlag < 5 && 8640 <= s__state) RESULT: Ultimate proved your program to be correct! [2021-10-24 10:27:32,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e7e41a3-648c-403f-82c6-2e13e9a6be40/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...