./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl --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 e559d44f6ee539bed570b1939999945f6f48ca1506c283f526f35c026a08bf8f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:45:12,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:45:12,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:45:12,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:45:12,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:45:12,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:45:12,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:45:12,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:45:12,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:45:12,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:45:12,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:45:12,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:45:12,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:45:12,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:45:12,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:45:12,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:45:12,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:45:12,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:45:12,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:45:12,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:45:12,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:45:12,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:45:12,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:45:12,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:45:12,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:45:12,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:45:12,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:45:12,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:45:12,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:45:12,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:45:12,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:45:12,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:45:12,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:45:12,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:45:12,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:45:12,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:45:12,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:45:12,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:45:12,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:45:12,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:45:12,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:45:12,177 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:45:12,203 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:45:12,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:45:12,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:45:12,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:45:12,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:45:12,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:45:12,205 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:45:12,206 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:45:12,206 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:45:12,206 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:45:12,207 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:45:12,207 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:45:12,207 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:45:12,207 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:45:12,208 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:45:12,208 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:45:12,208 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:45:12,209 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:45:12,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:45:12,210 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:45:12,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:45:12,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:45:12,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:45:12,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:45:12,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:45:12,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:45:12,212 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:45:12,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:45:12,212 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:45:12,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:45:12,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:45:12,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:45:12,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:12,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:45:12,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:45:12,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:45:12,214 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:45:12,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:45:12,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:45:12,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:45:12,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:45:12,216 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_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e559d44f6ee539bed570b1939999945f6f48ca1506c283f526f35c026a08bf8f [2021-11-23 16:45:12,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:45:12,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:45:12,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:45:12,506 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:45:12,507 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:45:12,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c [2021-11-23 16:45:12,597 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/data/e914952f2/db6c7349eb6e4a059672e8ace6eec615/FLAGe2e4ee029 [2021-11-23 16:45:13,284 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:45:13,284 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c [2021-11-23 16:45:13,324 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/data/e914952f2/db6c7349eb6e4a059672e8ace6eec615/FLAGe2e4ee029 [2021-11-23 16:45:13,499 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/data/e914952f2/db6c7349eb6e4a059672e8ace6eec615 [2021-11-23 16:45:13,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:45:13,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:45:13,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:13,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:45:13,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:45:13,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:13" (1/1) ... [2021-11-23 16:45:13,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58fe1427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:13, skipping insertion in model container [2021-11-23 16:45:13,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:13" (1/1) ... [2021-11-23 16:45:13,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:45:13,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:45:14,101 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c[75833,75846] [2021-11-23 16:45:14,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:14,126 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:45:14,251 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c[75833,75846] [2021-11-23 16:45:14,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:14,294 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:45:14,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:14 WrapperNode [2021-11-23 16:45:14,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:14,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:14,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:45:14,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:45:14,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:14" (1/1) ... [2021-11-23 16:45:14,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:14" (1/1) ... [2021-11-23 16:45:14,424 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 800 [2021-11-23 16:45:14,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:14,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:45:14,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:45:14,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:45:14,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:14" (1/1) ... [2021-11-23 16:45:14,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:14" (1/1) ... [2021-11-23 16:45:14,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:14" (1/1) ... [2021-11-23 16:45:14,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:14" (1/1) ... [2021-11-23 16:45:14,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:14" (1/1) ... [2021-11-23 16:45:14,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:14" (1/1) ... [2021-11-23 16:45:14,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:14" (1/1) ... [2021-11-23 16:45:14,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:45:14,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:45:14,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:45:14,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:45:14,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:14" (1/1) ... [2021-11-23 16:45:14,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:14,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:45:14,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:45:14,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:45:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:45:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 16:45:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 16:45:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 16:45:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 16:45:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:45:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 16:45:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:45:14,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:45:14,844 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:45:14,845 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:45:14,898 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 16:45:16,718 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-23 16:45:16,718 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-23 16:45:16,719 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:45:16,772 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:45:16,780 INFO L158 Benchmark]: Toolchain (without parser) took 3272.65ms. Allocated memory was 104.9MB in the beginning and 153.1MB in the end (delta: 48.2MB). Free memory was 66.3MB in the beginning and 112.9MB in the end (delta: -46.6MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. [2021-11-23 16:45:16,781 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 104.9MB. Free memory was 78.0MB in the beginning and 77.9MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:45:16,783 INFO L158 Benchmark]: CACSL2BoogieTranslator took 777.29ms. Allocated memory is still 104.9MB. Free memory was 66.1MB in the beginning and 57.9MB in the end (delta: 8.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 16:45:16,783 INFO L158 Benchmark]: Boogie Procedure Inliner took 138.61ms. Allocated memory is still 104.9MB. Free memory was 57.9MB in the beginning and 53.2MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:45:16,785 INFO L158 Benchmark]: Boogie Preprocessor took 149.57ms. Allocated memory is still 104.9MB. Free memory was 53.2MB in the beginning and 46.2MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 16:45:16,787 INFO L158 Benchmark]: RCFGBuilder took 2189.57ms. Allocated memory was 104.9MB in the beginning and 153.1MB in the end (delta: 48.2MB). Free memory was 45.8MB in the beginning and 112.9MB in the end (delta: -67.2MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. [2021-11-23 16:45:16,797 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 104.9MB. Free memory was 78.0MB in the beginning and 77.9MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 777.29ms. Allocated memory is still 104.9MB. Free memory was 66.1MB in the beginning and 57.9MB in the end (delta: 8.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 138.61ms. Allocated memory is still 104.9MB. Free memory was 57.9MB in the beginning and 53.2MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 149.57ms. Allocated memory is still 104.9MB. Free memory was 53.2MB in the beginning and 46.2MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 2189.57ms. Allocated memory was 104.9MB in the beginning and 153.1MB in the end (delta: 48.2MB). Free memory was 45.8MB in the beginning and 112.9MB in the end (delta: -67.2MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:45:16,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl --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 e559d44f6ee539bed570b1939999945f6f48ca1506c283f526f35c026a08bf8f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:45:19,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:45:19,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:45:19,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:45:19,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:45:19,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:45:19,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:45:19,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:45:19,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:45:19,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:45:19,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:45:19,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:45:19,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:45:19,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:45:19,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:45:19,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:45:19,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:45:19,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:45:19,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:45:19,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:45:19,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:45:19,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:45:19,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:45:19,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:45:19,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:45:19,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:45:19,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:45:19,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:45:19,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:45:19,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:45:19,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:45:19,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:45:19,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:45:19,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:45:19,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:45:19,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:45:19,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:45:19,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:45:19,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:45:19,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:45:19,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:45:19,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:45:19,602 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:45:19,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:45:19,603 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:45:19,603 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:45:19,604 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:45:19,605 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:45:19,605 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:45:19,605 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:45:19,606 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:45:19,606 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:45:19,606 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:45:19,607 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:45:19,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:45:19,608 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:45:19,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:45:19,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:45:19,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:45:19,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:45:19,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:45:19,612 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:45:19,612 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:45:19,612 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:45:19,613 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:45:19,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:45:19,613 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:45:19,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:45:19,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:45:19,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:45:19,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:45:19,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:19,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:45:19,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:45:19,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:45:19,617 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:45:19,618 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:45:19,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:45:19,619 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:45:19,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:45:19,620 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e559d44f6ee539bed570b1939999945f6f48ca1506c283f526f35c026a08bf8f [2021-11-23 16:45:20,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:45:20,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:45:20,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:45:20,209 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:45:20,210 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:45:20,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c [2021-11-23 16:45:20,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/data/01906bbe6/1dea1814b99d4814aa8bd46943131895/FLAG7602348f9 [2021-11-23 16:45:21,135 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:45:21,136 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c [2021-11-23 16:45:21,175 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/data/01906bbe6/1dea1814b99d4814aa8bd46943131895/FLAG7602348f9 [2021-11-23 16:45:21,316 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/data/01906bbe6/1dea1814b99d4814aa8bd46943131895 [2021-11-23 16:45:21,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:45:21,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:45:21,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:21,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:45:21,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:45:21,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:21" (1/1) ... [2021-11-23 16:45:21,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7adc96c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:21, skipping insertion in model container [2021-11-23 16:45:21,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:21" (1/1) ... [2021-11-23 16:45:21,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:45:21,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:45:22,097 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c[75833,75846] [2021-11-23 16:45:22,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:22,151 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 16:45:22,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:45:22,356 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c[75833,75846] [2021-11-23 16:45:22,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:22,371 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:45:22,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c[75833,75846] [2021-11-23 16:45:22,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:22,613 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:45:22,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:22 WrapperNode [2021-11-23 16:45:22,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:22,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:22,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:45:22,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:45:22,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:22" (1/1) ... [2021-11-23 16:45:22,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:22" (1/1) ... [2021-11-23 16:45:22,760 INFO L137 Inliner]: procedures = 35, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 770 [2021-11-23 16:45:22,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:22,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:45:22,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:45:22,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:45:22,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:22" (1/1) ... [2021-11-23 16:45:22,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:22" (1/1) ... [2021-11-23 16:45:22,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:22" (1/1) ... [2021-11-23 16:45:22,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:22" (1/1) ... [2021-11-23 16:45:22,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:22" (1/1) ... [2021-11-23 16:45:22,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:22" (1/1) ... [2021-11-23 16:45:22,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:22" (1/1) ... [2021-11-23 16:45:22,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:45:22,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:45:22,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:45:22,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:45:22,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:22" (1/1) ... [2021-11-23 16:45:22,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:22,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:45:22,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:45:23,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:45:23,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:45:23,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:45:23,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 16:45:23,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 16:45:23,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 16:45:23,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 16:45:23,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:45:23,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:45:23,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 16:45:23,298 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:45:23,300 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:45:23,338 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 16:45:34,327 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-23 16:45:34,328 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-23 16:45:34,328 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:45:34,338 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:45:34,339 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 16:45:34,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:45:34 BoogieIcfgContainer [2021-11-23 16:45:34,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:45:34,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:45:34,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:45:34,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:45:34,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:45:21" (1/3) ... [2021-11-23 16:45:34,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e811ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:45:34, skipping insertion in model container [2021-11-23 16:45:34,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:22" (2/3) ... [2021-11-23 16:45:34,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e811ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:45:34, skipping insertion in model container [2021-11-23 16:45:34,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:45:34" (3/3) ... [2021-11-23 16:45:34,351 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.15.i.cil-2.c [2021-11-23 16:45:34,358 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:45:34,358 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 16:45:34,421 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:45:34,429 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 [2021-11-23 16:45:34,429 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 16:45:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 152 states have (on average 1.7236842105263157) internal successors, (262), 153 states have internal predecessors, (262), 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) [2021-11-23 16:45:34,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 16:45:34,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:34,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:34,466 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:45:34,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:34,475 INFO L85 PathProgramCache]: Analyzing trace with hash 983008807, now seen corresponding path program 1 times [2021-11-23 16:45:34,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:34,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378186463] [2021-11-23 16:45:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:34,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:34,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:34,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:34,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:45:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:35,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:45:35,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:35,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:35,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:35,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:35,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378186463] [2021-11-23 16:45:35,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378186463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:35,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:35,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:45:35,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838572753] [2021-11-23 16:45:35,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:35,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:45:35,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:35,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:45:35,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:35,516 INFO L87 Difference]: Start difference. First operand has 154 states, 152 states have (on average 1.7236842105263157) internal successors, (262), 153 states have internal predecessors, (262), 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 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-23 16:45:35,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:35,772 INFO L93 Difference]: Finished difference Result 439 states and 752 transitions. [2021-11-23 16:45:35,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:45:35,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2021-11-23 16:45:35,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:35,805 INFO L225 Difference]: With dead ends: 439 [2021-11-23 16:45:35,806 INFO L226 Difference]: Without dead ends: 269 [2021-11-23 16:45:35,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:35,819 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 196 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:35,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 465 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 16:45:35,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-11-23 16:45:35,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2021-11-23 16:45:35,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.5149253731343284) internal successors, (406), 268 states have internal predecessors, (406), 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) [2021-11-23 16:45:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 406 transitions. [2021-11-23 16:45:35,902 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 406 transitions. Word has length 46 [2021-11-23 16:45:35,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:35,903 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 406 transitions. [2021-11-23 16:45:35,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-23 16:45:35,904 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 406 transitions. [2021-11-23 16:45:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-23 16:45:35,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:35,909 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:35,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:36,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:36,115 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:45:36,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:36,117 INFO L85 PathProgramCache]: Analyzing trace with hash 559363764, now seen corresponding path program 1 times [2021-11-23 16:45:36,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:36,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752665586] [2021-11-23 16:45:36,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:36,142 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:36,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:36,153 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:36,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 16:45:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:36,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:45:36,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:37,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:37,141 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:37,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752665586] [2021-11-23 16:45:37,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752665586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:37,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:37,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:45:37,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937412323] [2021-11-23 16:45:37,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:37,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:45:37,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:37,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:45:37,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:37,145 INFO L87 Difference]: Start difference. First operand 269 states and 406 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:37,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:37,875 INFO L93 Difference]: Finished difference Result 526 states and 809 transitions. [2021-11-23 16:45:37,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:45:37,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-23 16:45:37,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:37,880 INFO L225 Difference]: With dead ends: 526 [2021-11-23 16:45:37,881 INFO L226 Difference]: Without dead ends: 395 [2021-11-23 16:45:37,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:37,884 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 145 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:37,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 575 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 16:45:37,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-23 16:45:37,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2021-11-23 16:45:37,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.5) internal successors, (591), 394 states have internal predecessors, (591), 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) [2021-11-23 16:45:37,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 591 transitions. [2021-11-23 16:45:37,918 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 591 transitions. Word has length 63 [2021-11-23 16:45:37,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:37,919 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 591 transitions. [2021-11-23 16:45:37,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:37,920 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 591 transitions. [2021-11-23 16:45:37,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 16:45:37,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:37,927 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:37,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-23 16:45:38,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:38,157 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:45:38,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:38,158 INFO L85 PathProgramCache]: Analyzing trace with hash -821601812, now seen corresponding path program 1 times [2021-11-23 16:45:38,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:38,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127424661] [2021-11-23 16:45:38,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:38,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:38,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:38,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:38,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 16:45:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:39,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:45:39,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 16:45:39,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:39,306 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:39,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127424661] [2021-11-23 16:45:39,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127424661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:39,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:39,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:45:39,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604377849] [2021-11-23 16:45:39,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:39,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:45:39,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:39,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:45:39,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:39,310 INFO L87 Difference]: Start difference. First operand 395 states and 591 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:39,731 INFO L93 Difference]: Finished difference Result 776 states and 1175 transitions. [2021-11-23 16:45:39,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:45:39,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-23 16:45:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:39,736 INFO L225 Difference]: With dead ends: 776 [2021-11-23 16:45:39,736 INFO L226 Difference]: Without dead ends: 519 [2021-11-23 16:45:39,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:39,739 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 142 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:39,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 579 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 16:45:39,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-11-23 16:45:39,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2021-11-23 16:45:39,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.4961389961389961) internal successors, (775), 518 states have internal predecessors, (775), 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) [2021-11-23 16:45:39,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 775 transitions. [2021-11-23 16:45:39,768 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 775 transitions. Word has length 85 [2021-11-23 16:45:39,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:39,768 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 775 transitions. [2021-11-23 16:45:39,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:39,769 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 775 transitions. [2021-11-23 16:45:39,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-23 16:45:39,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:39,774 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:39,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:39,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:39,997 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:45:39,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:39,998 INFO L85 PathProgramCache]: Analyzing trace with hash 146192029, now seen corresponding path program 1 times [2021-11-23 16:45:40,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:40,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49528719] [2021-11-23 16:45:40,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:40,011 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:40,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:40,015 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:40,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 16:45:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:40,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:45:40,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:41,318 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-23 16:45:41,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:41,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:41,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49528719] [2021-11-23 16:45:41,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49528719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:41,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:41,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:45:41,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423434214] [2021-11-23 16:45:41,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:41,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:45:41,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:41,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:45:41,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:41,322 INFO L87 Difference]: Start difference. First operand 519 states and 775 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-23 16:45:41,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:41,856 INFO L93 Difference]: Finished difference Result 1023 states and 1541 transitions. [2021-11-23 16:45:41,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:45:41,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 126 [2021-11-23 16:45:41,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:41,862 INFO L225 Difference]: With dead ends: 1023 [2021-11-23 16:45:41,862 INFO L226 Difference]: Without dead ends: 642 [2021-11-23 16:45:41,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:41,868 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 141 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:41,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 577 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 16:45:41,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-11-23 16:45:41,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2021-11-23 16:45:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4929797191887675) internal successors, (957), 641 states have internal predecessors, (957), 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) [2021-11-23 16:45:41,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 957 transitions. [2021-11-23 16:45:41,894 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 957 transitions. Word has length 126 [2021-11-23 16:45:41,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:41,896 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 957 transitions. [2021-11-23 16:45:41,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-23 16:45:41,898 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 957 transitions. [2021-11-23 16:45:41,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-23 16:45:41,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:41,911 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:41,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:42,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:42,134 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:45:42,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:42,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1274245440, now seen corresponding path program 1 times [2021-11-23 16:45:42,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:42,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7935146] [2021-11-23 16:45:42,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:42,136 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:42,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:42,142 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:42,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 16:45:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:43,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:45:43,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-23 16:45:43,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:43,610 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:43,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7935146] [2021-11-23 16:45:43,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7935146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:43,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:43,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:45:43,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437311307] [2021-11-23 16:45:43,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:43,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:45:43,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:43,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:45:43,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:43,613 INFO L87 Difference]: Start difference. First operand 642 states and 957 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-11-23 16:45:44,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:44,106 INFO L93 Difference]: Finished difference Result 1269 states and 1905 transitions. [2021-11-23 16:45:44,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:45:44,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 169 [2021-11-23 16:45:44,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:44,113 INFO L225 Difference]: With dead ends: 1269 [2021-11-23 16:45:44,113 INFO L226 Difference]: Without dead ends: 765 [2021-11-23 16:45:44,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:44,115 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 143 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:44,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 577 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 16:45:44,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-11-23 16:45:44,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 765. [2021-11-23 16:45:44,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 1.4908376963350785) internal successors, (1139), 764 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1139 transitions. [2021-11-23 16:45:44,138 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1139 transitions. Word has length 169 [2021-11-23 16:45:44,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:44,139 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 1139 transitions. [2021-11-23 16:45:44,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-11-23 16:45:44,139 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1139 transitions. [2021-11-23 16:45:44,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-23 16:45:44,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:44,143 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:44,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:44,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:44,350 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:45:44,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:44,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1004162366, now seen corresponding path program 1 times [2021-11-23 16:45:44,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:44,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762709135] [2021-11-23 16:45:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:44,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:44,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:44,353 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:44,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 16:45:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:45,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:45:45,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-23 16:45:45,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:45,861 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:45,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762709135] [2021-11-23 16:45:45,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762709135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:45,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:45,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:45:45,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433053167] [2021-11-23 16:45:45,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:45,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:45:45,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:45,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:45:45,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:45,865 INFO L87 Difference]: Start difference. First operand 765 states and 1139 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-11-23 16:45:46,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:46,418 INFO L93 Difference]: Finished difference Result 1517 states and 2273 transitions. [2021-11-23 16:45:46,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:45:46,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 208 [2021-11-23 16:45:46,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:46,431 INFO L225 Difference]: With dead ends: 1517 [2021-11-23 16:45:46,431 INFO L226 Difference]: Without dead ends: 890 [2021-11-23 16:45:46,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:46,435 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 143 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:46,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 579 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 16:45:46,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-11-23 16:45:46,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 890. [2021-11-23 16:45:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 889 states have (on average 1.4893138357705287) internal successors, (1324), 889 states have internal predecessors, (1324), 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) [2021-11-23 16:45:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1324 transitions. [2021-11-23 16:45:46,468 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1324 transitions. Word has length 208 [2021-11-23 16:45:46,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:46,469 INFO L470 AbstractCegarLoop]: Abstraction has 890 states and 1324 transitions. [2021-11-23 16:45:46,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-11-23 16:45:46,469 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1324 transitions. [2021-11-23 16:45:46,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-23 16:45:46,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:46,474 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:46,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:46,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:46,690 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:45:46,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:46,691 INFO L85 PathProgramCache]: Analyzing trace with hash 552393385, now seen corresponding path program 1 times [2021-11-23 16:45:46,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:46,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802034264] [2021-11-23 16:45:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:46,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:46,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:46,696 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:46,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 16:45:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:47,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:45:47,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-11-23 16:45:48,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:48,475 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:48,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802034264] [2021-11-23 16:45:48,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802034264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:48,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:48,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:45:48,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306140230] [2021-11-23 16:45:48,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:48,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:45:48,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:48,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:45:48,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:48,479 INFO L87 Difference]: Start difference. First operand 890 states and 1324 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2021-11-23 16:45:49,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:49,558 INFO L93 Difference]: Finished difference Result 1766 states and 2641 transitions. [2021-11-23 16:45:49,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:45:49,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 250 [2021-11-23 16:45:49,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:49,568 INFO L225 Difference]: With dead ends: 1766 [2021-11-23 16:45:49,568 INFO L226 Difference]: Without dead ends: 1014 [2021-11-23 16:45:49,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:49,571 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 142 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:49,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 577 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 16:45:49,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-11-23 16:45:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 1014. [2021-11-23 16:45:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 1013 states have (on average 1.4876604146100691) internal successors, (1507), 1013 states have internal predecessors, (1507), 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) [2021-11-23 16:45:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1507 transitions. [2021-11-23 16:45:49,611 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1507 transitions. Word has length 250 [2021-11-23 16:45:49,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:49,612 INFO L470 AbstractCegarLoop]: Abstraction has 1014 states and 1507 transitions. [2021-11-23 16:45:49,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2021-11-23 16:45:49,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1507 transitions. [2021-11-23 16:45:49,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-23 16:45:49,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:49,642 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:49,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:49,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:49,866 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:45:49,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:49,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1276348089, now seen corresponding path program 1 times [2021-11-23 16:45:49,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:49,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705932407] [2021-11-23 16:45:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:49,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:49,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:49,871 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:49,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 16:45:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:51,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:45:51,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:51,783 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2021-11-23 16:45:51,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:51,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:51,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705932407] [2021-11-23 16:45:51,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705932407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:51,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:51,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:45:51,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99974327] [2021-11-23 16:45:51,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:51,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:45:51,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:51,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:45:51,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:51,787 INFO L87 Difference]: Start difference. First operand 1014 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-11-23 16:45:52,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:52,943 INFO L93 Difference]: Finished difference Result 2014 states and 3007 transitions. [2021-11-23 16:45:52,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:45:52,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 294 [2021-11-23 16:45:52,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:52,954 INFO L225 Difference]: With dead ends: 2014 [2021-11-23 16:45:52,954 INFO L226 Difference]: Without dead ends: 1138 [2021-11-23 16:45:52,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:52,956 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 143 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:52,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 577 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 16:45:52,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-11-23 16:45:52,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1138. [2021-11-23 16:45:52,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1137 states have (on average 1.4863676341248901) internal successors, (1690), 1137 states have internal predecessors, (1690), 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) [2021-11-23 16:45:52,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1690 transitions. [2021-11-23 16:45:52,998 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1690 transitions. Word has length 294 [2021-11-23 16:45:52,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:52,999 INFO L470 AbstractCegarLoop]: Abstraction has 1138 states and 1690 transitions. [2021-11-23 16:45:53,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-11-23 16:45:53,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1690 transitions. [2021-11-23 16:45:53,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-11-23 16:45:53,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:53,008 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:53,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:53,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:53,234 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:45:53,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:53,235 INFO L85 PathProgramCache]: Analyzing trace with hash 381000891, now seen corresponding path program 1 times [2021-11-23 16:45:53,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:53,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995278255] [2021-11-23 16:45:53,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:53,237 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:53,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:53,239 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:53,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 16:45:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:54,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:45:54,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:55,335 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-11-23 16:45:55,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:55,335 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:55,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995278255] [2021-11-23 16:45:55,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995278255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:55,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:55,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:45:55,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676267783] [2021-11-23 16:45:55,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:55,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:45:55,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:55,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:45:55,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:55,338 INFO L87 Difference]: Start difference. First operand 1138 states and 1690 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-11-23 16:45:55,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:55,846 INFO L93 Difference]: Finished difference Result 2264 states and 3377 transitions. [2021-11-23 16:45:55,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:45:55,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 334 [2021-11-23 16:45:55,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:55,857 INFO L225 Difference]: With dead ends: 2264 [2021-11-23 16:45:55,857 INFO L226 Difference]: Without dead ends: 1264 [2021-11-23 16:45:55,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:55,860 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 144 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:55,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 579 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 16:45:55,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-11-23 16:45:55,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1264. [2021-11-23 16:45:55,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1263 states have (on average 1.4853523357086302) internal successors, (1876), 1263 states have internal predecessors, (1876), 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) [2021-11-23 16:45:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1876 transitions. [2021-11-23 16:45:55,935 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1876 transitions. Word has length 334 [2021-11-23 16:45:55,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:55,936 INFO L470 AbstractCegarLoop]: Abstraction has 1264 states and 1876 transitions. [2021-11-23 16:45:55,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-11-23 16:45:55,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1876 transitions. [2021-11-23 16:45:55,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2021-11-23 16:45:55,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:55,948 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:55,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:56,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:56,162 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:45:56,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:56,162 INFO L85 PathProgramCache]: Analyzing trace with hash -460162701, now seen corresponding path program 1 times [2021-11-23 16:45:56,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:56,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50515883] [2021-11-23 16:45:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:56,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:56,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:56,166 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:56,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 16:45:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:57,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:45:57,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 275 proven. 0 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2021-11-23 16:45:58,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:58,370 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:58,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50515883] [2021-11-23 16:45:58,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50515883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:58,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:58,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:45:58,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745977949] [2021-11-23 16:45:58,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:58,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:45:58,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:58,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:45:58,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:58,373 INFO L87 Difference]: Start difference. First operand 1264 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-11-23 16:45:59,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:59,140 INFO L93 Difference]: Finished difference Result 2515 states and 3747 transitions. [2021-11-23 16:45:59,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:45:59,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 377 [2021-11-23 16:45:59,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:59,152 INFO L225 Difference]: With dead ends: 2515 [2021-11-23 16:45:59,152 INFO L226 Difference]: Without dead ends: 1389 [2021-11-23 16:45:59,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:45:59,158 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 143 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:59,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 577 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 16:45:59,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2021-11-23 16:45:59,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1389. [2021-11-23 16:45:59,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1388 states have (on average 1.484149855907781) internal successors, (2060), 1388 states have internal predecessors, (2060), 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) [2021-11-23 16:45:59,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 2060 transitions. [2021-11-23 16:45:59,213 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 2060 transitions. Word has length 377 [2021-11-23 16:45:59,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:59,214 INFO L470 AbstractCegarLoop]: Abstraction has 1389 states and 2060 transitions. [2021-11-23 16:45:59,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-11-23 16:45:59,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 2060 transitions. [2021-11-23 16:45:59,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-11-23 16:45:59,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:59,220 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:59,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:59,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:59,437 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:45:59,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:59,438 INFO L85 PathProgramCache]: Analyzing trace with hash 180850149, now seen corresponding path program 1 times [2021-11-23 16:45:59,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:59,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816271751] [2021-11-23 16:45:59,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:59,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:59,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:59,444 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:59,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 16:46:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:01,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1704 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:46:01,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2021-11-23 16:46:01,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:01,797 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:01,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816271751] [2021-11-23 16:46:01,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816271751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:01,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:01,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:46:01,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73018868] [2021-11-23 16:46:01,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:01,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:46:01,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:01,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:46:01,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:46:01,799 INFO L87 Difference]: Start difference. First operand 1389 states and 2060 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2021-11-23 16:46:02,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:02,266 INFO L93 Difference]: Finished difference Result 2765 states and 4115 transitions. [2021-11-23 16:46:02,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:46:02,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 422 [2021-11-23 16:46:02,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:02,279 INFO L225 Difference]: With dead ends: 2765 [2021-11-23 16:46:02,279 INFO L226 Difference]: Without dead ends: 1514 [2021-11-23 16:46:02,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:46:02,283 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 143 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:02,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 577 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 16:46:02,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-11-23 16:46:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1514. [2021-11-23 16:46:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 1.4831460674157304) internal successors, (2244), 1513 states have internal predecessors, (2244), 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) [2021-11-23 16:46:02,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 2244 transitions. [2021-11-23 16:46:02,338 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 2244 transitions. Word has length 422 [2021-11-23 16:46:02,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:02,339 INFO L470 AbstractCegarLoop]: Abstraction has 1514 states and 2244 transitions. [2021-11-23 16:46:02,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2021-11-23 16:46:02,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 2244 transitions. [2021-11-23 16:46:02,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2021-11-23 16:46:02,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:02,360 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:02,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:02,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:02,574 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:46:02,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:02,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1252005548, now seen corresponding path program 1 times [2021-11-23 16:46:02,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:02,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866846058] [2021-11-23 16:46:02,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:02,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:02,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:02,579 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:02,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 16:46:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:04,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1813 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:46:04,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1914 backedges. 349 proven. 0 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2021-11-23 16:46:05,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:05,201 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:05,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866846058] [2021-11-23 16:46:05,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866846058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:05,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:05,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:46:05,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136729627] [2021-11-23 16:46:05,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:05,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:46:05,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:05,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:46:05,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:46:05,203 INFO L87 Difference]: Start difference. First operand 1514 states and 2244 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-11-23 16:46:05,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:05,742 INFO L93 Difference]: Finished difference Result 3017 states and 4487 transitions. [2021-11-23 16:46:05,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:46:05,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 463 [2021-11-23 16:46:05,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:05,756 INFO L225 Difference]: With dead ends: 3017 [2021-11-23 16:46:05,756 INFO L226 Difference]: Without dead ends: 1641 [2021-11-23 16:46:05,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:46:05,759 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 145 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:05,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 579 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 16:46:05,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2021-11-23 16:46:05,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1641. [2021-11-23 16:46:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1640 states have (on average 1.4823170731707318) internal successors, (2431), 1640 states have internal predecessors, (2431), 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) [2021-11-23 16:46:05,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2431 transitions. [2021-11-23 16:46:05,818 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2431 transitions. Word has length 463 [2021-11-23 16:46:05,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:05,819 INFO L470 AbstractCegarLoop]: Abstraction has 1641 states and 2431 transitions. [2021-11-23 16:46:05,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-11-23 16:46:05,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2431 transitions. [2021-11-23 16:46:05,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2021-11-23 16:46:05,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:05,829 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:05,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:06,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:06,054 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:46:06,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash -819223452, now seen corresponding path program 1 times [2021-11-23 16:46:06,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:06,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176433601] [2021-11-23 16:46:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:06,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:06,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:06,059 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:06,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 16:46:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:07,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:46:07,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 383 proven. 0 refuted. 0 times theorem prover too weak. 1929 trivial. 0 not checked. [2021-11-23 16:46:08,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:08,613 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:08,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176433601] [2021-11-23 16:46:08,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176433601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:08,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:08,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:46:08,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903936488] [2021-11-23 16:46:08,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:08,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:46:08,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:08,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:46:08,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:46:08,616 INFO L87 Difference]: Start difference. First operand 1641 states and 2431 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2021-11-23 16:46:09,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:09,226 INFO L93 Difference]: Finished difference Result 3270 states and 4859 transitions. [2021-11-23 16:46:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:46:09,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 507 [2021-11-23 16:46:09,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:09,240 INFO L225 Difference]: With dead ends: 3270 [2021-11-23 16:46:09,241 INFO L226 Difference]: Without dead ends: 1767 [2021-11-23 16:46:09,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:46:09,245 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 144 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:09,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 577 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 16:46:09,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2021-11-23 16:46:09,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2021-11-23 16:46:09,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1766 states have (on average 1.4813137032842583) internal successors, (2616), 1766 states have internal predecessors, (2616), 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) [2021-11-23 16:46:09,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2616 transitions. [2021-11-23 16:46:09,302 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2616 transitions. Word has length 507 [2021-11-23 16:46:09,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:09,303 INFO L470 AbstractCegarLoop]: Abstraction has 1767 states and 2616 transitions. [2021-11-23 16:46:09,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2021-11-23 16:46:09,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2616 transitions. [2021-11-23 16:46:09,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2021-11-23 16:46:09,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:09,312 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:09,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:09,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:09,526 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:46:09,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:09,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1059985507, now seen corresponding path program 1 times [2021-11-23 16:46:09,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:09,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941469484] [2021-11-23 16:46:09,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:09,530 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:09,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:09,534 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:09,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 16:46:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:13,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 2070 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 16:46:13,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:13,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 16:46:13,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 16:46:14,224 INFO L354 Elim1Store]: treesize reduction 1496, result has 4.7 percent of original size [2021-11-23 16:46:14,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 78 treesize of output 85 [2021-11-23 16:46:14,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 85 [2021-11-23 16:46:14,683 INFO L354 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2021-11-23 16:46:14,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 49 [2021-11-23 16:46:14,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:46:14,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2021-11-23 16:46:14,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 16:46:14,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 16:46:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2752 trivial. 0 not checked. [2021-11-23 16:46:16,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:16,289 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:16,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941469484] [2021-11-23 16:46:16,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941469484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:16,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:16,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 16:46:16,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522229576] [2021-11-23 16:46:16,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:16,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 16:46:16,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:16,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 16:46:16,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 16:46:16,292 INFO L87 Difference]: Start difference. First operand 1767 states and 2616 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2021-11-23 16:46:18,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 16:46:20,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 16:46:25,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 16:46:26,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 16:46:30,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 16:46:34,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:34,614 INFO L93 Difference]: Finished difference Result 3531 states and 5228 transitions. [2021-11-23 16:46:34,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 16:46:34,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 553 [2021-11-23 16:46:34,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:34,628 INFO L225 Difference]: With dead ends: 3531 [2021-11-23 16:46:34,628 INFO L226 Difference]: Without dead ends: 1767 [2021-11-23 16:46:34,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 16:46:34,632 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 7 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:34,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 703 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 2 Unknown, 0 Unchecked, 18.2s Time] [2021-11-23 16:46:34,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2021-11-23 16:46:34,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2021-11-23 16:46:34,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1766 states have (on average 1.4807474518686297) internal successors, (2615), 1766 states have internal predecessors, (2615), 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) [2021-11-23 16:46:34,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2615 transitions. [2021-11-23 16:46:34,708 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2615 transitions. Word has length 553 [2021-11-23 16:46:34,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:34,708 INFO L470 AbstractCegarLoop]: Abstraction has 1767 states and 2615 transitions. [2021-11-23 16:46:34,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2021-11-23 16:46:34,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2615 transitions. [2021-11-23 16:46:34,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2021-11-23 16:46:34,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:34,717 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:34,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:34,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:34,942 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:46:34,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:34,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1194022431, now seen corresponding path program 1 times [2021-11-23 16:46:34,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:34,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134934223] [2021-11-23 16:46:34,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:34,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:34,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:34,951 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:35,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 16:46:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:39,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 2088 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 16:46:39,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:39,778 INFO L354 Elim1Store]: treesize reduction 183, result has 13.3 percent of original size [2021-11-23 16:46:39,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 37 [2021-11-23 16:46:39,996 INFO L354 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2021-11-23 16:46:39,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 49 [2021-11-23 16:46:40,234 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-11-23 16:46:40,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 13 [2021-11-23 16:46:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 1524 proven. 0 refuted. 0 times theorem prover too weak. 1228 trivial. 0 not checked. [2021-11-23 16:46:41,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:41,225 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:41,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134934223] [2021-11-23 16:46:41,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134934223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:41,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:41,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 16:46:41,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117025603] [2021-11-23 16:46:41,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:41,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 16:46:41,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:41,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 16:46:41,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 16:46:41,229 INFO L87 Difference]: Start difference. First operand 1767 states and 2615 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2021-11-23 16:46:43,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 16:46:48,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 16:46:54,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 16:46:57,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:57,857 INFO L93 Difference]: Finished difference Result 5020 states and 7512 transitions. [2021-11-23 16:46:57,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 16:46:57,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 553 [2021-11-23 16:46:57,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:57,882 INFO L225 Difference]: With dead ends: 5020 [2021-11-23 16:46:57,883 INFO L226 Difference]: Without dead ends: 3263 [2021-11-23 16:46:57,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 16:46:57,896 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 102 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:57,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 722 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 199 Invalid, 1 Unknown, 87 Unchecked, 16.5s Time] [2021-11-23 16:46:57,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2021-11-23 16:46:57,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 2352. [2021-11-23 16:46:57,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2351 states have (on average 1.5695448745214802) internal successors, (3690), 2351 states have internal predecessors, (3690), 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) [2021-11-23 16:46:58,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3690 transitions. [2021-11-23 16:46:58,005 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3690 transitions. Word has length 553 [2021-11-23 16:46:58,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:58,006 INFO L470 AbstractCegarLoop]: Abstraction has 2352 states and 3690 transitions. [2021-11-23 16:46:58,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2021-11-23 16:46:58,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3690 transitions. [2021-11-23 16:46:58,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2021-11-23 16:46:58,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:58,017 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:58,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:58,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:58,234 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:46:58,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:58,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1439959711, now seen corresponding path program 1 times [2021-11-23 16:46:58,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:58,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565877394] [2021-11-23 16:46:58,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:58,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:58,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:58,240 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:58,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ffc5be2-4f00-420e-b7b6-64d68b562804/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 16:47:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:25,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 2088 conjuncts, 126 conjunts are in the unsatisfiable core [2021-11-23 16:47:25,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:26,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39482 treesize of output 24864 [2021-11-23 16:47:26,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,702 INFO L244 Elim1Store]: Index analysis took 204 ms [2021-11-23 16:47:26,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 69 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 4256 treesize of output 4299 [2021-11-23 16:47:26,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:26,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 16:47:28,338 INFO L354 Elim1Store]: treesize reduction 138, result has 16.9 percent of original size [2021-11-23 16:47:28,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 6755 treesize of output 2588 [2021-11-23 16:47:31,716 INFO L244 Elim1Store]: Index analysis took 196 ms