./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem10_label00.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_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/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_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem10_label00.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/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_75401169-2160-449b-9bbc-fd8c1cd569de/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 6b49fbf439c6d5cf33b5a144a2382feff3c2b3eeb58f6496beb37cacb5d6cd07 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:46:56,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:46:56,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:46:56,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:46:56,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:46:56,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:46:56,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:46:56,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:46:56,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:46:56,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:46:56,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:46:56,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:46:56,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:46:56,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:46:56,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:46:56,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:46:56,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:46:56,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:46:56,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:46:56,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:46:56,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:46:56,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:46:56,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:46:56,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:46:56,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:46:56,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:46:56,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:46:56,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:46:56,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:46:56,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:46:56,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:46:56,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:46:56,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:46:56,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:46:56,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:46:56,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:46:56,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:46:56,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:46:56,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:46:56,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:46:56,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:46:56,262 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:46:56,310 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:46:56,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:46:56,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:46:56,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:46:56,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:46:56,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:46:56,314 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:46:56,314 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:46:56,315 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:46:56,315 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:46:56,316 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:46:56,317 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:46:56,317 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:46:56,317 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:46:56,318 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:46:56,318 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:46:56,318 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:46:56,319 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:46:56,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:46:56,321 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:46:56,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:46:56,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:46:56,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:46:56,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:46:56,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:46:56,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:46:56,325 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:46:56,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:46:56,325 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:46:56,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:46:56,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:46:56,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:46:56,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:46:56,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:46:56,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:46:56,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:46:56,328 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:46:56,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:46:56,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:46:56,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:46:56,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:46:56,330 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_75401169-2160-449b-9bbc-fd8c1cd569de/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b49fbf439c6d5cf33b5a144a2382feff3c2b3eeb58f6496beb37cacb5d6cd07 [2021-11-23 16:46:56,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:46:56,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:46:56,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:46:56,710 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:46:56,711 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:46:56,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-rers2012/Problem10_label00.c [2021-11-23 16:46:56,799 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/data/98cb13746/1a7ca2206e97447fa992adac38ea3b35/FLAGe99e1ffd3 [2021-11-23 16:46:57,398 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:46:57,399 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/sv-benchmarks/c/eca-rers2012/Problem10_label00.c [2021-11-23 16:46:57,425 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/data/98cb13746/1a7ca2206e97447fa992adac38ea3b35/FLAGe99e1ffd3 [2021-11-23 16:46:57,636 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/data/98cb13746/1a7ca2206e97447fa992adac38ea3b35 [2021-11-23 16:46:57,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:46:57,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:46:57,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:46:57,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:46:57,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:46:57,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:46:57" (1/1) ... [2021-11-23 16:46:57,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2604c52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:57, skipping insertion in model container [2021-11-23 16:46:57,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:46:57" (1/1) ... [2021-11-23 16:46:57,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:46:57,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:46:57,961 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_75401169-2160-449b-9bbc-fd8c1cd569de/sv-benchmarks/c/eca-rers2012/Problem10_label00.c[5445,5458] [2021-11-23 16:46:58,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:46:58,164 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:46:58,243 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_75401169-2160-449b-9bbc-fd8c1cd569de/sv-benchmarks/c/eca-rers2012/Problem10_label00.c[5445,5458] [2021-11-23 16:46:58,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:46:58,420 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:46:58,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:58 WrapperNode [2021-11-23 16:46:58,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:46:58,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:46:58,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:46:58,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:46:58,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:58" (1/1) ... [2021-11-23 16:46:58,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:58" (1/1) ... [2021-11-23 16:46:58,574 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 597 [2021-11-23 16:46:58,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:46:58,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:46:58,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:46:58,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:46:58,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:58" (1/1) ... [2021-11-23 16:46:58,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:58" (1/1) ... [2021-11-23 16:46:58,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:58" (1/1) ... [2021-11-23 16:46:58,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:58" (1/1) ... [2021-11-23 16:46:58,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:58" (1/1) ... [2021-11-23 16:46:58,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:58" (1/1) ... [2021-11-23 16:46:58,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:58" (1/1) ... [2021-11-23 16:46:58,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:46:58,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:46:58,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:46:58,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:46:58,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:46:58" (1/1) ... [2021-11-23 16:46:58,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:46:58,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:46:58,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:46:58,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:46:58,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:46:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:46:58,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:46:58,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:46:58,866 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:46:58,868 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:47:00,110 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:47:00,152 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 16:47:00,157 INFO L158 Benchmark]: Toolchain (without parser) took 2515.41ms. Allocated memory was 92.3MB in the beginning and 132.1MB in the end (delta: 39.8MB). Free memory was 69.0MB in the beginning and 93.8MB in the end (delta: -24.8MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2021-11-23 16:47:00,158 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 75.5MB. Free memory was 53.7MB in the beginning and 53.7MB in the end (delta: 35.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:47:00,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 778.58ms. Allocated memory is still 92.3MB. Free memory was 69.0MB in the beginning and 52.1MB in the end (delta: 16.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-23 16:47:00,160 INFO L158 Benchmark]: Boogie Procedure Inliner took 153.53ms. Allocated memory is still 92.3MB. Free memory was 51.9MB in the beginning and 66.5MB in the end (delta: -14.6MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2021-11-23 16:47:00,161 INFO L158 Benchmark]: Boogie Preprocessor took 109.08ms. Allocated memory is still 92.3MB. Free memory was 66.5MB in the beginning and 61.6MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:47:00,162 INFO L158 Benchmark]: RCFGBuilder took 1468.17ms. Allocated memory was 92.3MB in the beginning and 132.1MB in the end (delta: 39.8MB). Free memory was 61.6MB in the beginning and 93.8MB in the end (delta: -32.2MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2021-11-23 16:47:00,166 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 75.5MB. Free memory was 53.7MB in the beginning and 53.7MB in the end (delta: 35.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 778.58ms. Allocated memory is still 92.3MB. Free memory was 69.0MB in the beginning and 52.1MB in the end (delta: 16.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 153.53ms. Allocated memory is still 92.3MB. Free memory was 51.9MB in the beginning and 66.5MB in the end (delta: -14.6MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 109.08ms. Allocated memory is still 92.3MB. Free memory was 66.5MB in the beginning and 61.6MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1468.17ms. Allocated memory was 92.3MB in the beginning and 132.1MB in the end (delta: 39.8MB). Free memory was 61.6MB in the beginning and 93.8MB in the end (delta: -32.2MB). Peak memory consumption was 32.6MB. 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 16:47:00,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/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_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/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_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem10_label00.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/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_75401169-2160-449b-9bbc-fd8c1cd569de/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 6b49fbf439c6d5cf33b5a144a2382feff3c2b3eeb58f6496beb37cacb5d6cd07 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:47:02,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:47:02,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:47:02,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:47:02,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:47:02,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:47:02,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:47:02,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:47:02,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:47:02,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:47:02,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:47:02,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:47:02,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:47:02,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:47:02,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:47:02,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:47:02,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:47:02,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:47:02,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:47:02,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:47:02,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:47:02,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:47:02,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:47:02,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:47:02,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:47:02,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:47:02,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:47:02,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:47:02,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:47:02,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:47:02,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:47:02,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:47:02,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:47:02,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:47:02,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:47:02,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:47:02,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:47:02,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:47:02,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:47:02,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:47:02,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:47:02,873 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:47:02,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:47:02,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:47:02,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:47:02,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:47:02,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:47:02,920 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:47:02,920 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:47:02,920 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:47:02,921 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:47:02,921 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:47:02,922 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:47:02,922 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:47:02,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:47:02,924 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:47:02,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:47:02,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:47:02,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:47:02,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:47:02,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:47:02,925 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:47:02,925 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:47:02,925 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:47:02,926 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:47:02,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:47:02,926 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:47:02,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:47:02,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:47:02,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:47:02,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:47:02,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:47:02,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:47:02,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:47:02,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:47:02,928 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:47:02,928 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:47:02,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:47:02,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:47:02,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:47:02,929 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_75401169-2160-449b-9bbc-fd8c1cd569de/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b49fbf439c6d5cf33b5a144a2382feff3c2b3eeb58f6496beb37cacb5d6cd07 [2021-11-23 16:47:03,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:47:03,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:47:03,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:47:03,347 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:47:03,350 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:47:03,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/eca-rers2012/Problem10_label00.c [2021-11-23 16:47:03,426 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/data/b70920d86/c7032a497a7747c9b742ed6355151d9a/FLAGced5b7c68 [2021-11-23 16:47:04,146 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:47:04,147 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/sv-benchmarks/c/eca-rers2012/Problem10_label00.c [2021-11-23 16:47:04,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/data/b70920d86/c7032a497a7747c9b742ed6355151d9a/FLAGced5b7c68 [2021-11-23 16:47:04,383 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/data/b70920d86/c7032a497a7747c9b742ed6355151d9a [2021-11-23 16:47:04,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:47:04,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:47:04,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:47:04,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:47:04,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:47:04,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:47:04" (1/1) ... [2021-11-23 16:47:04,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ffabb5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:04, skipping insertion in model container [2021-11-23 16:47:04,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:47:04" (1/1) ... [2021-11-23 16:47:04,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:47:04,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:47:04,717 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_75401169-2160-449b-9bbc-fd8c1cd569de/sv-benchmarks/c/eca-rers2012/Problem10_label00.c[5445,5458] [2021-11-23 16:47:04,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:47:04,983 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:47:05,046 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_75401169-2160-449b-9bbc-fd8c1cd569de/sv-benchmarks/c/eca-rers2012/Problem10_label00.c[5445,5458] [2021-11-23 16:47:05,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:47:05,143 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:47:05,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:05 WrapperNode [2021-11-23 16:47:05,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:47:05,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:47:05,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:47:05,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:47:05,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:05" (1/1) ... [2021-11-23 16:47:05,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:05" (1/1) ... [2021-11-23 16:47:05,251 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 595 [2021-11-23 16:47:05,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:47:05,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:47:05,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:47:05,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:47:05,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:05" (1/1) ... [2021-11-23 16:47:05,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:05" (1/1) ... [2021-11-23 16:47:05,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:05" (1/1) ... [2021-11-23 16:47:05,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:05" (1/1) ... [2021-11-23 16:47:05,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:05" (1/1) ... [2021-11-23 16:47:05,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:05" (1/1) ... [2021-11-23 16:47:05,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:05" (1/1) ... [2021-11-23 16:47:05,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:47:05,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:47:05,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:47:05,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:47:05,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:05" (1/1) ... [2021-11-23 16:47:05,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:47:05,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:47:05,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:47:05,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:47:05,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:47:05,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:47:05,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:47:05,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:47:05,508 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:47:05,509 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:47:08,375 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:47:08,390 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:47:08,391 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 16:47:08,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:47:08 BoogieIcfgContainer [2021-11-23 16:47:08,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:47:08,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:47:08,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:47:08,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:47:08,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:47:04" (1/3) ... [2021-11-23 16:47:08,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750f358f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:47:08, skipping insertion in model container [2021-11-23 16:47:08,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:05" (2/3) ... [2021-11-23 16:47:08,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750f358f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:47:08, skipping insertion in model container [2021-11-23 16:47:08,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:47:08" (3/3) ... [2021-11-23 16:47:08,403 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label00.c [2021-11-23 16:47:08,418 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:47:08,418 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 16:47:08,507 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:47:08,529 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 16:47:08,529 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 16:47:08,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 0 states have call successors, (0), 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 16:47:08,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 16:47:08,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:08,571 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, 1] [2021-11-23 16:47:08,572 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:47:08,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:08,579 INFO L85 PathProgramCache]: Analyzing trace with hash 433832817, now seen corresponding path program 1 times [2021-11-23 16:47:08,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:08,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951806936] [2021-11-23 16:47:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:08,597 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:08,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:08,602 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:08,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:47:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:08,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:47:08,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:08,984 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 16:47:08,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:08,985 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:08,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951806936] [2021-11-23 16:47:08,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951806936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:08,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:08,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 16:47:08,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589088683] [2021-11-23 16:47:08,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:08,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:47:08,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:09,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:47:09,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:47:09,051 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 0 states have call successors, (0), 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 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 16:47:12,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:12,254 INFO L93 Difference]: Finished difference Result 552 states and 966 transitions. [2021-11-23 16:47:12,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:47:12,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-23 16:47:12,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:12,269 INFO L225 Difference]: With dead ends: 552 [2021-11-23 16:47:12,270 INFO L226 Difference]: Without dead ends: 282 [2021-11-23 16:47:12,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 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 16:47:12,277 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 135 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:12,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 101 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-23 16:47:12,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-23 16:47:12,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-11-23 16:47:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.4483985765124556) internal successors, (407), 281 states have internal predecessors, (407), 0 states have call successors, (0), 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 16:47:12,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 407 transitions. [2021-11-23 16:47:12,372 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 407 transitions. Word has length 47 [2021-11-23 16:47:12,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:12,374 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 407 transitions. [2021-11-23 16:47:12,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 16:47:12,374 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 407 transitions. [2021-11-23 16:47:12,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:47:12,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:12,388 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 16:47:12,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:12,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:12,589 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:47:12,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:12,591 INFO L85 PathProgramCache]: Analyzing trace with hash -313962871, now seen corresponding path program 1 times [2021-11-23 16:47:12,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:12,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556680760] [2021-11-23 16:47:12,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:12,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:12,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:12,598 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:12,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 16:47:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:12,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:47:12,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:13,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:13,010 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:13,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556680760] [2021-11-23 16:47:13,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556680760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:13,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:13,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:47:13,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241243884] [2021-11-23 16:47:13,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:13,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:47:13,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:13,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:47:13,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:47:13,015 INFO L87 Difference]: Start difference. First operand 282 states and 407 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 16:47:16,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:16,340 INFO L93 Difference]: Finished difference Result 840 states and 1216 transitions. [2021-11-23 16:47:16,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:47:16,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:47:16,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:16,346 INFO L225 Difference]: With dead ends: 840 [2021-11-23 16:47:16,346 INFO L226 Difference]: Without dead ends: 560 [2021-11-23 16:47:16,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 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 16:47:16,350 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 102 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:16,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 205 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-23 16:47:16,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-11-23 16:47:16,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2021-11-23 16:47:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.3148479427549196) internal successors, (735), 559 states have internal predecessors, (735), 0 states have call successors, (0), 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 16:47:16,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 735 transitions. [2021-11-23 16:47:16,381 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 735 transitions. Word has length 115 [2021-11-23 16:47:16,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:16,382 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 735 transitions. [2021-11-23 16:47:16,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 16:47:16,383 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 735 transitions. [2021-11-23 16:47:16,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 16:47:16,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:16,386 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2021-11-23 16:47:16,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-23 16:47:16,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:16,596 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:47:16,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:16,596 INFO L85 PathProgramCache]: Analyzing trace with hash -645117955, now seen corresponding path program 1 times [2021-11-23 16:47:16,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:16,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000291963] [2021-11-23 16:47:16,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:16,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:16,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:16,601 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:16,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 16:47:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:16,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:47:16,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:17,090 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:17,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:17,091 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:17,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000291963] [2021-11-23 16:47:17,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000291963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:17,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:17,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 16:47:17,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954166856] [2021-11-23 16:47:17,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:17,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:47:17,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:17,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:47:17,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:47:17,102 INFO L87 Difference]: Start difference. First operand 560 states and 735 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 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 16:47:20,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:20,147 INFO L93 Difference]: Finished difference Result 1396 states and 1872 transitions. [2021-11-23 16:47:20,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:47:20,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 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 124 [2021-11-23 16:47:20,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:20,157 INFO L225 Difference]: With dead ends: 1396 [2021-11-23 16:47:20,158 INFO L226 Difference]: Without dead ends: 838 [2021-11-23 16:47:20,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 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 16:47:20,160 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 70 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:20,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 70 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-23 16:47:20,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-11-23 16:47:20,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2021-11-23 16:47:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.2473118279569892) internal successors, (1044), 837 states have internal predecessors, (1044), 0 states have call successors, (0), 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 16:47:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1044 transitions. [2021-11-23 16:47:20,195 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1044 transitions. Word has length 124 [2021-11-23 16:47:20,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:20,196 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1044 transitions. [2021-11-23 16:47:20,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 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 16:47:20,197 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1044 transitions. [2021-11-23 16:47:20,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-23 16:47:20,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:20,200 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:47:20,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:20,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:20,414 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:47:20,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:20,415 INFO L85 PathProgramCache]: Analyzing trace with hash 465685015, now seen corresponding path program 1 times [2021-11-23 16:47:20,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:20,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973457864] [2021-11-23 16:47:20,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:20,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:20,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:20,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:20,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 16:47:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:20,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 16:47:20,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:21,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:21,588 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:21,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973457864] [2021-11-23 16:47:21,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973457864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:21,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:21,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 16:47:21,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202598835] [2021-11-23 16:47:21,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:21,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:47:21,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:21,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:47:21,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:47:21,591 INFO L87 Difference]: Start difference. First operand 838 states and 1044 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 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 16:47:23,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:23,990 INFO L93 Difference]: Finished difference Result 1813 states and 2235 transitions. [2021-11-23 16:47:23,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:47:23,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2021-11-23 16:47:23,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:24,001 INFO L225 Difference]: With dead ends: 1813 [2021-11-23 16:47:24,001 INFO L226 Difference]: Without dead ends: 977 [2021-11-23 16:47:24,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 158 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 16:47:24,010 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 28 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:24,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 82 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 16:47:24,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-11-23 16:47:24,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2021-11-23 16:47:24,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 1.2172131147540983) internal successors, (1188), 976 states have internal predecessors, (1188), 0 states have call successors, (0), 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 16:47:24,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1188 transitions. [2021-11-23 16:47:24,046 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1188 transitions. Word has length 160 [2021-11-23 16:47:24,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:24,047 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1188 transitions. [2021-11-23 16:47:24,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 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 16:47:24,048 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1188 transitions. [2021-11-23 16:47:24,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-23 16:47:24,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:24,053 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2021-11-23 16:47:24,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:24,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:24,265 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:47:24,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:24,266 INFO L85 PathProgramCache]: Analyzing trace with hash 737528586, now seen corresponding path program 1 times [2021-11-23 16:47:24,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:24,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848563453] [2021-11-23 16:47:24,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:24,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:24,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:24,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:24,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 16:47:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:24,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:47:24,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:24,844 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:24,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:24,845 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:24,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848563453] [2021-11-23 16:47:24,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848563453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:24,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:24,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:47:24,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904937447] [2021-11-23 16:47:24,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:24,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:47:24,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:24,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:47:24,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:47:24,847 INFO L87 Difference]: Start difference. First operand 977 states and 1188 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 16:47:27,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:27,679 INFO L93 Difference]: Finished difference Result 2091 states and 2634 transitions. [2021-11-23 16:47:27,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:47:27,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2021-11-23 16:47:27,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:27,687 INFO L225 Difference]: With dead ends: 2091 [2021-11-23 16:47:27,687 INFO L226 Difference]: Without dead ends: 1255 [2021-11-23 16:47:27,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 188 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 16:47:27,689 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 67 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:27,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 215 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 16:47:27,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-11-23 16:47:27,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1116. [2021-11-23 16:47:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 1.199103139013453) internal successors, (1337), 1115 states have internal predecessors, (1337), 0 states have call successors, (0), 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 16:47:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1337 transitions. [2021-11-23 16:47:27,721 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1337 transitions. Word has length 190 [2021-11-23 16:47:27,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:27,721 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1337 transitions. [2021-11-23 16:47:27,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 16:47:27,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1337 transitions. [2021-11-23 16:47:27,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-23 16:47:27,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:27,726 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 16:47:27,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:27,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:27,944 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:47:27,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:27,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1441353034, now seen corresponding path program 1 times [2021-11-23 16:47:27,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:27,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543461149] [2021-11-23 16:47:27,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:27,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:27,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:27,946 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:27,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 16:47:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:28,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 16:47:28,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 89 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:29,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:47:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 107 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:36,146 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:36,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543461149] [2021-11-23 16:47:36,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543461149] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:47:36,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [19217050] [2021-11-23 16:47:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:36,146 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:47:36,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:47:36,148 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:47:36,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-23 16:47:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:36,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:36,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:38,759 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 118 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:38,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:47:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 144 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:40,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [19217050] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:47:40,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153364994] [2021-11-23 16:47:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:40,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:47:40,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:47:40,600 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 16:47:40,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 16:47:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:40,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:40,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:42,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:42,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153364994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:42,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2021-11-23 16:47:42,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 8, 8] total 21 [2021-11-23 16:47:42,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215469820] [2021-11-23 16:47:42,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:42,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 16:47:42,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:42,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 16:47:42,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-11-23 16:47:42,746 INFO L87 Difference]: Start difference. First operand 1116 states and 1337 transitions. Second operand has 7 states, 7 states have (on average 28.428571428571427) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 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 16:47:45,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:45,389 INFO L93 Difference]: Finished difference Result 2146 states and 2583 transitions. [2021-11-23 16:47:45,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 16:47:45,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.428571428571427) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2021-11-23 16:47:45,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:45,397 INFO L225 Difference]: With dead ends: 2146 [2021-11-23 16:47:45,397 INFO L226 Difference]: Without dead ends: 1116 [2021-11-23 16:47:45,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 971 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-11-23 16:47:45,400 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 198 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:45,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 22 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-23 16:47:45,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-11-23 16:47:45,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1116. [2021-11-23 16:47:45,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 1.1946188340807176) internal successors, (1332), 1115 states have internal predecessors, (1332), 0 states have call successors, (0), 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 16:47:45,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1332 transitions. [2021-11-23 16:47:45,447 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1332 transitions. Word has length 199 [2021-11-23 16:47:45,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:45,447 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1332 transitions. [2021-11-23 16:47:45,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.428571428571427) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 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 16:47:45,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1332 transitions. [2021-11-23 16:47:45,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-23 16:47:45,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:45,453 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:45,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:45,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-11-23 16:47:45,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:46,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:47:46,070 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:47:46,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:46,070 INFO L85 PathProgramCache]: Analyzing trace with hash 529343296, now seen corresponding path program 1 times [2021-11-23 16:47:46,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:46,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961759538] [2021-11-23 16:47:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:46,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:46,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:46,081 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:46,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 16:47:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:46,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:46,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:48,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:47:49,653 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-23 16:47:49,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:49,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961759538] [2021-11-23 16:47:49,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961759538] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:47:49,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1653493533] [2021-11-23 16:47:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:49,654 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:47:49,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:47:49,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:47:49,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-23 16:47:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:49,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:47:49,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:50,158 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-23 16:47:50,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:50,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1653493533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:50,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 16:47:50,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 9 [2021-11-23 16:47:50,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086667760] [2021-11-23 16:47:50,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:50,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:47:50,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:50,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:47:50,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:50,161 INFO L87 Difference]: Start difference. First operand 1116 states and 1332 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 16:47:53,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:53,259 INFO L93 Difference]: Finished difference Result 2508 states and 3041 transitions. [2021-11-23 16:47:53,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:47:53,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 221 [2021-11-23 16:47:53,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:53,265 INFO L225 Difference]: With dead ends: 2508 [2021-11-23 16:47:53,265 INFO L226 Difference]: Without dead ends: 1116 [2021-11-23 16:47:53,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:53,268 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 95 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:53,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 225 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-23 16:47:53,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-11-23 16:47:53,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1116. [2021-11-23 16:47:53,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 1.1713004484304932) internal successors, (1306), 1115 states have internal predecessors, (1306), 0 states have call successors, (0), 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 16:47:53,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1306 transitions. [2021-11-23 16:47:53,299 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1306 transitions. Word has length 221 [2021-11-23 16:47:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:53,300 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1306 transitions. [2021-11-23 16:47:53,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 16:47:53,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1306 transitions. [2021-11-23 16:47:53,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-23 16:47:53,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:53,305 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:53,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:53,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:53,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:53,716 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:47:53,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:53,716 INFO L85 PathProgramCache]: Analyzing trace with hash -265661732, now seen corresponding path program 1 times [2021-11-23 16:47:53,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:53,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910723268] [2021-11-23 16:47:53,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:53,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:53,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:53,719 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:53,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 16:47:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:53,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 16:47:53,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 89 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:54,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:48:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 89 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:25,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:25,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910723268] [2021-11-23 16:48:25,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910723268] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:48:25,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1095098446] [2021-11-23 16:48:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:25,584 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:48:25,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:48:25,585 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:48:25,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-23 16:48:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:25,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:48:25,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-23 16:48:26,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:26,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1095098446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:26,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 16:48:26,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2021-11-23 16:48:26,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197325272] [2021-11-23 16:48:26,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:26,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:48:26,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:26,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:48:26,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-23 16:48:26,250 INFO L87 Difference]: Start difference. First operand 1116 states and 1306 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 16:48:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:28,639 INFO L93 Difference]: Finished difference Result 2369 states and 2793 transitions. [2021-11-23 16:48:28,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:48:28,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 235 [2021-11-23 16:48:28,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:28,651 INFO L225 Difference]: With dead ends: 2369 [2021-11-23 16:48:28,652 INFO L226 Difference]: Without dead ends: 1394 [2021-11-23 16:48:28,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-23 16:48:28,654 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 101 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:28,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 194 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 16:48:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-11-23 16:48:28,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1394. [2021-11-23 16:48:28,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 1.1564967695620962) internal successors, (1611), 1393 states have internal predecessors, (1611), 0 states have call successors, (0), 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 16:48:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1611 transitions. [2021-11-23 16:48:28,692 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1611 transitions. Word has length 235 [2021-11-23 16:48:28,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:28,693 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 1611 transitions. [2021-11-23 16:48:28,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 16:48:28,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1611 transitions. [2021-11-23 16:48:28,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-11-23 16:48:28,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:28,702 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 16:48:28,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-23 16:48:28,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:29,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:29,104 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:48:29,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:29,105 INFO L85 PathProgramCache]: Analyzing trace with hash 535210299, now seen corresponding path program 1 times [2021-11-23 16:48:29,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:29,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480962050] [2021-11-23 16:48:29,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:29,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:29,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:29,108 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:29,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 16:48:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:29,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 16:48:29,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 272 proven. 72 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-23 16:48:30,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:48:45,969 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 272 proven. 72 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-23 16:48:45,969 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:45,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480962050] [2021-11-23 16:48:45,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480962050] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:48:45,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1142235969] [2021-11-23 16:48:45,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:45,970 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:48:45,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:48:45,971 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:48:45,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-23 16:48:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:46,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:46,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-11-23 16:48:47,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:47,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1142235969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:47,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 16:48:47,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3] total 8 [2021-11-23 16:48:47,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570805379] [2021-11-23 16:48:47,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:47,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 16:48:47,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:47,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 16:48:47,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:47,493 INFO L87 Difference]: Start difference. First operand 1394 states and 1611 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:50,789 INFO L93 Difference]: Finished difference Result 2935 states and 3475 transitions. [2021-11-23 16:48:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 16:48:50,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 346 [2021-11-23 16:48:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:50,800 INFO L225 Difference]: With dead ends: 2935 [2021-11-23 16:48:50,800 INFO L226 Difference]: Without dead ends: 1682 [2021-11-23 16:48:50,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1029 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:50,803 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 140 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:50,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 215 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-23 16:48:50,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2021-11-23 16:48:50,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1533. [2021-11-23 16:48:50,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1532 states have (on average 1.152088772845953) internal successors, (1765), 1532 states have internal predecessors, (1765), 0 states have call successors, (0), 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 16:48:50,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 1765 transitions. [2021-11-23 16:48:50,847 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 1765 transitions. Word has length 346 [2021-11-23 16:48:50,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:50,848 INFO L470 AbstractCegarLoop]: Abstraction has 1533 states and 1765 transitions. [2021-11-23 16:48:50,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:50,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 1765 transitions. [2021-11-23 16:48:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-11-23 16:48:50,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:50,858 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 16:48:50,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:51,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:51,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt [2021-11-23 16:48:51,272 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:48:51,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:51,272 INFO L85 PathProgramCache]: Analyzing trace with hash -464676238, now seen corresponding path program 1 times [2021-11-23 16:48:51,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:51,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139062263] [2021-11-23 16:48:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:51,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:51,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:51,277 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:51,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 16:48:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:51,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:51,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-23 16:48:53,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:49:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 133 proven. 179 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-23 16:49:08,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:08,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139062263] [2021-11-23 16:49:08,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139062263] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:49:08,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [414514318] [2021-11-23 16:49:08,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:08,507 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:49:08,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:49:08,508 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:49:08,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-23 16:49:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:08,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 16:49:08,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 267 proven. 45 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-23 16:49:10,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:49:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 267 proven. 45 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-23 16:49:11,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [414514318] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:49:11,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072468635] [2021-11-23 16:49:11,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:11,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:49:11,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:49:11,630 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 16:49:11,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-23 16:49:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:11,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:49:11,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-23 16:49:12,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:12,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072468635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:12,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2021-11-23 16:49:12,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5, 5, 5] total 11 [2021-11-23 16:49:12,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042296944] [2021-11-23 16:49:12,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:12,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:49:12,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:12,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:49:12,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-23 16:49:12,508 INFO L87 Difference]: Start difference. First operand 1533 states and 1765 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 16:49:16,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:16,640 INFO L93 Difference]: Finished difference Result 3898 states and 4493 transitions. [2021-11-23 16:49:16,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:49:16,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 347 [2021-11-23 16:49:16,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:16,656 INFO L225 Difference]: With dead ends: 3898 [2021-11-23 16:49:16,657 INFO L226 Difference]: Without dead ends: 2506 [2021-11-23 16:49:16,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1730 GetRequests, 1721 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-23 16:49:16,659 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 22 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:16,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 201 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-23 16:49:16,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2021-11-23 16:49:16,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2506. [2021-11-23 16:49:16,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2505 states have (on average 1.1221556886227544) internal successors, (2811), 2505 states have internal predecessors, (2811), 0 states have call successors, (0), 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 16:49:16,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 2811 transitions. [2021-11-23 16:49:16,720 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 2811 transitions. Word has length 347 [2021-11-23 16:49:16,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:16,721 INFO L470 AbstractCegarLoop]: Abstraction has 2506 states and 2811 transitions. [2021-11-23 16:49:16,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 16:49:16,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 2811 transitions. [2021-11-23 16:49:16,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-11-23 16:49:16,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:16,730 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 16:49:16,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:16,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:17,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:17,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:17,344 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:49:17,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:17,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1075861398, now seen corresponding path program 1 times [2021-11-23 16:49:17,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:17,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269292316] [2021-11-23 16:49:17,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:17,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:17,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:17,347 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:17,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 16:49:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:17,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:49:17,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 111 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:18,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:49:25,335 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 317 proven. 8 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-23 16:49:25,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:25,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269292316] [2021-11-23 16:49:25,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269292316] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:49:25,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1846575272] [2021-11-23 16:49:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:25,337 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:49:25,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:49:25,343 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:49:25,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-23 16:49:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:25,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 16:49:25,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-11-23 16:49:26,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:26,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1846575272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:26,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 16:49:26,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 4] total 11 [2021-11-23 16:49:26,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557955379] [2021-11-23 16:49:26,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:26,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 16:49:26,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:26,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 16:49:26,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-23 16:49:26,655 INFO L87 Difference]: Start difference. First operand 2506 states and 2811 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 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 16:49:30,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:30,657 INFO L93 Difference]: Finished difference Result 5041 states and 5662 transitions. [2021-11-23 16:49:30,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 16:49:30,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 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 360 [2021-11-23 16:49:30,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:30,674 INFO L225 Difference]: With dead ends: 5041 [2021-11-23 16:49:30,674 INFO L226 Difference]: Without dead ends: 2676 [2021-11-23 16:49:30,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1079 GetRequests, 1069 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-23 16:49:30,678 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 406 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:30,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 25 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-23 16:49:30,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-11-23 16:49:30,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2367. [2021-11-23 16:49:30,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 2366 states have (on average 1.0828402366863905) internal successors, (2562), 2366 states have internal predecessors, (2562), 0 states have call successors, (0), 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 16:49:30,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 2562 transitions. [2021-11-23 16:49:30,759 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 2562 transitions. Word has length 360 [2021-11-23 16:49:30,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:30,760 INFO L470 AbstractCegarLoop]: Abstraction has 2367 states and 2562 transitions. [2021-11-23 16:49:30,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 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 16:49:30,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 2562 transitions. [2021-11-23 16:49:30,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-11-23 16:49:30,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:30,767 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 16:49:30,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:30,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-23 16:49:31,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:31,169 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:49:31,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1812872635, now seen corresponding path program 1 times [2021-11-23 16:49:31,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:31,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503960870] [2021-11-23 16:49:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:31,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:31,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:31,173 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:31,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 16:49:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:31,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:49:31,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 134 proven. 271 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:34,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:49:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-23 16:49:39,778 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:39,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503960870] [2021-11-23 16:49:39,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503960870] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 16:49:39,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 16:49:39,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-23 16:49:39,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345740636] [2021-11-23 16:49:39,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:39,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 16:49:39,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:39,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 16:49:39,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:39,781 INFO L87 Difference]: Start difference. First operand 2367 states and 2562 transitions. Second operand has 5 states, 5 states have (on average 56.4) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 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 16:49:42,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:42,917 INFO L93 Difference]: Finished difference Result 4771 states and 5175 transitions. [2021-11-23 16:49:42,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 16:49:42,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 56.4) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 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 361 [2021-11-23 16:49:42,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:42,932 INFO L225 Difference]: With dead ends: 4771 [2021-11-23 16:49:42,933 INFO L226 Difference]: Without dead ends: 2545 [2021-11-23 16:49:42,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 714 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 16:49:42,936 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 140 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:42,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 23 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-23 16:49:42,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2021-11-23 16:49:42,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 2506. [2021-11-23 16:49:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2505 states have (on average 1.0802395209580837) internal successors, (2706), 2505 states have internal predecessors, (2706), 0 states have call successors, (0), 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 16:49:43,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 2706 transitions. [2021-11-23 16:49:43,012 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 2706 transitions. Word has length 361 [2021-11-23 16:49:43,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:43,013 INFO L470 AbstractCegarLoop]: Abstraction has 2506 states and 2706 transitions. [2021-11-23 16:49:43,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.4) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 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 16:49:43,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 2706 transitions. [2021-11-23 16:49:43,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2021-11-23 16:49:43,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:43,022 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 16:49:43,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:43,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:43,240 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:49:43,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:43,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1254420789, now seen corresponding path program 1 times [2021-11-23 16:49:43,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:43,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880437820] [2021-11-23 16:49:43,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:43,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:43,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:43,244 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:43,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 16:49:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:43,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:49:43,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 134 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:45,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:49:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 352 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:51,935 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:51,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880437820] [2021-11-23 16:49:51,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880437820] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:49:51,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1938520469] [2021-11-23 16:49:51,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:51,935 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:49:51,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:49:51,936 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:49:51,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-23 16:49:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:52,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:49:52,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:54,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:50:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 262 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:00,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1938520469] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:50:00,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533486051] [2021-11-23 16:50:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:00,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:50:00,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:50:00,303 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 16:50:00,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-23 16:50:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:00,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 16:50:00,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 134 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:01,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:50:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 352 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:05,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533486051] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:50:05,849 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 16:50:05,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 6, 4, 4] total 12 [2021-11-23 16:50:05,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13226245] [2021-11-23 16:50:05,850 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 16:50:05,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 16:50:05,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:05,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 16:50:05,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-23 16:50:05,853 INFO L87 Difference]: Start difference. First operand 2506 states and 2706 transitions. Second operand has 12 states, 12 states have (on average 87.25) internal successors, (1047), 12 states have internal predecessors, (1047), 0 states have call successors, (0), 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 16:50:19,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 16:50:32,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 16:50:38,036 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 16:50:42,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 16:50:43,866 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 16:50:47,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 16:51:00,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 16:51:09,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:51:09,497 INFO L93 Difference]: Finished difference Result 7479 states and 8078 transitions. [2021-11-23 16:51:09,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 16:51:09,504 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 87.25) internal successors, (1047), 12 states have internal predecessors, (1047), 0 states have call successors, (0), 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 400 [2021-11-23 16:51:09,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:51:09,505 INFO L225 Difference]: With dead ends: 7479 [2021-11-23 16:51:09,505 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 16:51:09,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2418 GetRequests, 2394 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-11-23 16:51:09,509 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 534 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4581 mSolverCounterSat, 305 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 4888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 4581 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:51:09,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 106 Invalid, 4888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 4581 Invalid, 2 Unknown, 0 Unchecked, 60.7s Time] [2021-11-23 16:51:09,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 16:51:09,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 16:51:09,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:09,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 16:51:09,511 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 400 [2021-11-23 16:51:09,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:51:09,512 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 16:51:09,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.25) internal successors, (1047), 12 states have internal predecessors, (1047), 0 states have call successors, (0), 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 16:51:09,513 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 16:51:09,513 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 16:51:09,515 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 16:51:09,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 16:51:09,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-11-23 16:51:09,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-23 16:51:10,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:51:10,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 16:51:17,474 INFO L858 garLoopResultBuilder]: For program point L597(line 597) no Hoare annotation was computed. [2021-11-23 16:51:17,474 INFO L858 garLoopResultBuilder]: For program point L564(lines 564 582) no Hoare annotation was computed. [2021-11-23 16:51:17,475 INFO L858 garLoopResultBuilder]: For program point L333(lines 333 582) no Hoare annotation was computed. [2021-11-23 16:51:17,475 INFO L858 garLoopResultBuilder]: For program point L367(lines 367 582) no Hoare annotation was computed. [2021-11-23 16:51:17,475 INFO L858 garLoopResultBuilder]: For program point L301(lines 301 582) no Hoare annotation was computed. [2021-11-23 16:51:17,475 INFO L858 garLoopResultBuilder]: For program point L235(lines 235 582) no Hoare annotation was computed. [2021-11-23 16:51:17,475 INFO L858 garLoopResultBuilder]: For program point L202-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,475 INFO L858 garLoopResultBuilder]: For program point L169-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,475 INFO L858 garLoopResultBuilder]: For program point L136-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,476 INFO L858 garLoopResultBuilder]: For program point L103-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,476 INFO L858 garLoopResultBuilder]: For program point L70-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,476 INFO L858 garLoopResultBuilder]: For program point L37-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,476 INFO L858 garLoopResultBuilder]: For program point L533(lines 533 582) no Hoare annotation was computed. [2021-11-23 16:51:17,476 INFO L858 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-11-23 16:51:17,476 INFO L858 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-11-23 16:51:17,477 INFO L858 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-11-23 16:51:17,477 INFO L858 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-11-23 16:51:17,477 INFO L858 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-11-23 16:51:17,477 INFO L858 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-11-23 16:51:17,477 INFO L858 garLoopResultBuilder]: For program point L567(lines 567 582) no Hoare annotation was computed. [2021-11-23 16:51:17,477 INFO L858 garLoopResultBuilder]: For program point L435(lines 435 582) no Hoare annotation was computed. [2021-11-23 16:51:17,477 INFO L858 garLoopResultBuilder]: For program point L336(lines 336 582) no Hoare annotation was computed. [2021-11-23 16:51:17,478 INFO L858 garLoopResultBuilder]: For program point L270(lines 270 582) no Hoare annotation was computed. [2021-11-23 16:51:17,478 INFO L858 garLoopResultBuilder]: For program point L403(lines 403 582) no Hoare annotation was computed. [2021-11-23 16:51:17,478 INFO L858 garLoopResultBuilder]: For program point L370(lines 370 582) no Hoare annotation was computed. [2021-11-23 16:51:17,478 INFO L858 garLoopResultBuilder]: For program point L205-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,478 INFO L858 garLoopResultBuilder]: For program point L172-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,479 INFO L858 garLoopResultBuilder]: For program point L139-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,479 INFO L858 garLoopResultBuilder]: For program point L106-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,479 INFO L858 garLoopResultBuilder]: For program point L73-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,479 INFO L858 garLoopResultBuilder]: For program point L40-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,479 INFO L858 garLoopResultBuilder]: For program point L536(lines 536 582) no Hoare annotation was computed. [2021-11-23 16:51:17,479 INFO L858 garLoopResultBuilder]: For program point L503(lines 503 582) no Hoare annotation was computed. [2021-11-23 16:51:17,480 INFO L858 garLoopResultBuilder]: For program point L470(lines 470 582) no Hoare annotation was computed. [2021-11-23 16:51:17,480 INFO L858 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-11-23 16:51:17,480 INFO L858 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-11-23 16:51:17,480 INFO L858 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-11-23 16:51:17,480 INFO L858 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-11-23 16:51:17,481 INFO L858 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-11-23 16:51:17,481 INFO L858 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-11-23 16:51:17,481 INFO L858 garLoopResultBuilder]: For program point L339(lines 339 582) no Hoare annotation was computed. [2021-11-23 16:51:17,481 INFO L858 garLoopResultBuilder]: For program point L306(lines 306 582) no Hoare annotation was computed. [2021-11-23 16:51:17,481 INFO L858 garLoopResultBuilder]: For program point L241(lines 241 582) no Hoare annotation was computed. [2021-11-23 16:51:17,482 INFO L858 garLoopResultBuilder]: For program point L208-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,482 INFO L858 garLoopResultBuilder]: For program point L175-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,482 INFO L858 garLoopResultBuilder]: For program point L142-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,482 INFO L858 garLoopResultBuilder]: For program point L109-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,482 INFO L858 garLoopResultBuilder]: For program point L76-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,482 INFO L858 garLoopResultBuilder]: For program point L43-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,482 INFO L858 garLoopResultBuilder]: For program point L539(lines 539 582) no Hoare annotation was computed. [2021-11-23 16:51:17,482 INFO L858 garLoopResultBuilder]: For program point L440(lines 440 582) no Hoare annotation was computed. [2021-11-23 16:51:17,483 INFO L858 garLoopResultBuilder]: For program point L275(lines 275 582) no Hoare annotation was computed. [2021-11-23 16:51:17,483 INFO L858 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-11-23 16:51:17,483 INFO L858 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-11-23 16:51:17,483 INFO L858 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-11-23 16:51:17,483 INFO L858 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-11-23 16:51:17,483 INFO L858 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-11-23 16:51:17,483 INFO L858 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-11-23 16:51:17,483 INFO L858 garLoopResultBuilder]: For program point L573(lines 573 582) no Hoare annotation was computed. [2021-11-23 16:51:17,483 INFO L858 garLoopResultBuilder]: For program point L408(lines 408 582) no Hoare annotation was computed. [2021-11-23 16:51:17,483 INFO L858 garLoopResultBuilder]: For program point L375(lines 375 582) no Hoare annotation was computed. [2021-11-23 16:51:17,483 INFO L858 garLoopResultBuilder]: For program point L475(lines 475 582) no Hoare annotation was computed. [2021-11-23 16:51:17,483 INFO L858 garLoopResultBuilder]: For program point L211-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,484 INFO L858 garLoopResultBuilder]: For program point L178-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,484 INFO L858 garLoopResultBuilder]: For program point L145-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,484 INFO L858 garLoopResultBuilder]: For program point L112-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,484 INFO L858 garLoopResultBuilder]: For program point L79-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,484 INFO L858 garLoopResultBuilder]: For program point L46-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,484 INFO L858 garLoopResultBuilder]: For program point L509(lines 509 582) no Hoare annotation was computed. [2021-11-23 16:51:17,484 INFO L858 garLoopResultBuilder]: For program point L311(lines 311 582) no Hoare annotation was computed. [2021-11-23 16:51:17,484 INFO L858 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-11-23 16:51:17,484 INFO L858 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-11-23 16:51:17,484 INFO L858 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-11-23 16:51:17,484 INFO L858 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-11-23 16:51:17,485 INFO L858 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-11-23 16:51:17,485 INFO L858 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-11-23 16:51:17,485 INFO L858 garLoopResultBuilder]: For program point L345(lines 345 582) no Hoare annotation was computed. [2021-11-23 16:51:17,485 INFO L858 garLoopResultBuilder]: For program point L246(lines 246 582) no Hoare annotation was computed. [2021-11-23 16:51:17,485 INFO L858 garLoopResultBuilder]: For program point L544(lines 544 582) no Hoare annotation was computed. [2021-11-23 16:51:17,485 INFO L858 garLoopResultBuilder]: For program point L181-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,485 INFO L858 garLoopResultBuilder]: For program point L148-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,486 INFO L858 garLoopResultBuilder]: For program point L115-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,486 INFO L858 garLoopResultBuilder]: For program point L82-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,486 INFO L858 garLoopResultBuilder]: For program point L49-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,486 INFO L858 garLoopResultBuilder]: For program point L446(lines 446 582) no Hoare annotation was computed. [2021-11-23 16:51:17,486 INFO L858 garLoopResultBuilder]: For program point L413(lines 413 582) no Hoare annotation was computed. [2021-11-23 16:51:17,487 INFO L858 garLoopResultBuilder]: For program point L380(lines 380 582) no Hoare annotation was computed. [2021-11-23 16:51:17,487 INFO L858 garLoopResultBuilder]: For program point L281(lines 281 582) no Hoare annotation was computed. [2021-11-23 16:51:17,487 INFO L858 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-11-23 16:51:17,487 INFO L858 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-11-23 16:51:17,487 INFO L858 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-11-23 16:51:17,487 INFO L858 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-11-23 16:51:17,488 INFO L858 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-11-23 16:51:17,488 INFO L858 garLoopResultBuilder]: For program point L579(lines 579 582) no Hoare annotation was computed. [2021-11-23 16:51:17,488 INFO L858 garLoopResultBuilder]: For program point L249(lines 249 582) no Hoare annotation was computed. [2021-11-23 16:51:17,488 INFO L858 garLoopResultBuilder]: For program point L514(lines 514 582) no Hoare annotation was computed. [2021-11-23 16:51:17,488 INFO L858 garLoopResultBuilder]: For program point L481(lines 481 582) no Hoare annotation was computed. [2021-11-23 16:51:17,489 INFO L858 garLoopResultBuilder]: For program point L316(lines 316 582) no Hoare annotation was computed. [2021-11-23 16:51:17,489 INFO L858 garLoopResultBuilder]: For program point L184-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,489 INFO L858 garLoopResultBuilder]: For program point L151-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,489 INFO L858 garLoopResultBuilder]: For program point L118-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,489 INFO L858 garLoopResultBuilder]: For program point L85-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,489 INFO L858 garLoopResultBuilder]: For program point L52-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,490 INFO L858 garLoopResultBuilder]: For program point L350(lines 350 582) no Hoare annotation was computed. [2021-11-23 16:51:17,490 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 16:51:17,490 INFO L858 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-11-23 16:51:17,490 INFO L858 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-11-23 16:51:17,490 INFO L858 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-11-23 16:51:17,490 INFO L858 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-11-23 16:51:17,491 INFO L858 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-11-23 16:51:17,491 INFO L854 garLoopResultBuilder]: At program point L583(lines 30 584) the Hoare annotation is: (let ((.cse7 (= (_ bv0 32) ~a10~0)) (.cse9 (= (_ bv10 32) ~a19~0)) (.cse4 (or (not (bvsge (_ bv38 32) ~a1~0)) (not (= (_ bv6 32) ~a19~0)))) (.cse6 (= (_ bv3 32) ~a10~0)) (.cse3 (bvsle (bvsdiv (bvadd (_ bv4289952666 32) (bvmul ~a1~0 (_ bv10 32))) (_ bv9 32)) (_ bv4294967283 32))) (.cse8 (= ~a19~0 (_ bv9 32))) (.cse5 (bvslt (_ bv218 32) ~a1~0)) (.cse0 (= (_ bv14 32) ~a4~0)) (.cse1 (= (_ bv0 32) ~a12~0)) (.cse2 (= (_ bv1 32) ~a10~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse0 .cse1 .cse6) (and .cse0 .cse1 (= (_ bv8 32) ~a19~0)) (and (bvsle ~a1~0 (_ bv4294967283 32)) .cse0 .cse1 .cse3 .cse7) (and .cse0 .cse1 (= (_ bv4 32) ~a10~0)) (and .cse8 .cse0 .cse1 .cse7) (and .cse0 .cse1 .cse9 .cse7) (and .cse0 .cse1 .cse9 .cse2) (and .cse0 .cse1 (= (_ bv2 32) ~a10~0) .cse4) (and .cse0 .cse1 .cse6 .cse3) (and .cse8 .cse5 .cse0 .cse1 .cse2))) [2021-11-23 16:51:17,491 INFO L858 garLoopResultBuilder]: For program point L550(lines 550 582) no Hoare annotation was computed. [2021-11-23 16:51:17,492 INFO L858 garLoopResultBuilder]: For program point L418(lines 418 582) no Hoare annotation was computed. [2021-11-23 16:51:17,492 INFO L858 garLoopResultBuilder]: For program point L385(lines 385 582) no Hoare annotation was computed. [2021-11-23 16:51:17,492 INFO L858 garLoopResultBuilder]: For program point L220(lines 220 582) no Hoare annotation was computed. [2021-11-23 16:51:17,492 INFO L858 garLoopResultBuilder]: For program point L187-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,492 INFO L858 garLoopResultBuilder]: For program point L154-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,493 INFO L858 garLoopResultBuilder]: For program point L121-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,493 INFO L858 garLoopResultBuilder]: For program point L88-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,493 INFO L858 garLoopResultBuilder]: For program point L55-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,493 INFO L858 garLoopResultBuilder]: For program point L452(lines 452 582) no Hoare annotation was computed. [2021-11-23 16:51:17,493 INFO L858 garLoopResultBuilder]: For program point L287(lines 287 582) no Hoare annotation was computed. [2021-11-23 16:51:17,494 INFO L858 garLoopResultBuilder]: For program point L254(lines 254 582) no Hoare annotation was computed. [2021-11-23 16:51:17,494 INFO L858 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-11-23 16:51:17,494 INFO L858 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-11-23 16:51:17,494 INFO L858 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-11-23 16:51:17,494 INFO L858 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-11-23 16:51:17,494 INFO L858 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-11-23 16:51:17,495 INFO L858 garLoopResultBuilder]: For program point L519(lines 519 582) no Hoare annotation was computed. [2021-11-23 16:51:17,495 INFO L858 garLoopResultBuilder]: For program point L486(lines 486 582) no Hoare annotation was computed. [2021-11-23 16:51:17,495 INFO L861 garLoopResultBuilder]: At program point L586(lines 586 602) the Hoare annotation is: true [2021-11-23 16:51:17,495 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 582) no Hoare annotation was computed. [2021-11-23 16:51:17,495 INFO L858 garLoopResultBuilder]: For program point L355(lines 355 582) no Hoare annotation was computed. [2021-11-23 16:51:17,495 INFO L858 garLoopResultBuilder]: For program point L322(lines 322 582) no Hoare annotation was computed. [2021-11-23 16:51:17,495 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 16:51:17,495 INFO L858 garLoopResultBuilder]: For program point L190-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,495 INFO L858 garLoopResultBuilder]: For program point L157-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,495 INFO L858 garLoopResultBuilder]: For program point L124-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,496 INFO L858 garLoopResultBuilder]: For program point L91-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,496 INFO L858 garLoopResultBuilder]: For program point L58-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,496 INFO L858 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-11-23 16:51:17,496 INFO L858 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-11-23 16:51:17,496 INFO L858 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-11-23 16:51:17,496 INFO L858 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-11-23 16:51:17,496 INFO L858 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-11-23 16:51:17,496 INFO L858 garLoopResultBuilder]: For program point L555(lines 555 582) no Hoare annotation was computed. [2021-11-23 16:51:17,496 INFO L858 garLoopResultBuilder]: For program point L225(lines 225 582) no Hoare annotation was computed. [2021-11-23 16:51:17,496 INFO L858 garLoopResultBuilder]: For program point L424(lines 424 582) no Hoare annotation was computed. [2021-11-23 16:51:17,496 INFO L858 garLoopResultBuilder]: For program point L259(lines 259 582) no Hoare annotation was computed. [2021-11-23 16:51:17,497 INFO L858 garLoopResultBuilder]: For program point L193-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,497 INFO L858 garLoopResultBuilder]: For program point L160-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,497 INFO L858 garLoopResultBuilder]: For program point L127-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,497 INFO L858 garLoopResultBuilder]: For program point L94-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,497 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-23 16:51:17,497 INFO L858 garLoopResultBuilder]: For program point L61-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,497 INFO L858 garLoopResultBuilder]: For program point L524(lines 524 582) no Hoare annotation was computed. [2021-11-23 16:51:17,497 INFO L858 garLoopResultBuilder]: For program point L491(lines 491 582) no Hoare annotation was computed. [2021-11-23 16:51:17,497 INFO L858 garLoopResultBuilder]: For program point L458(lines 458 582) no Hoare annotation was computed. [2021-11-23 16:51:17,497 INFO L858 garLoopResultBuilder]: For program point L293(lines 293 582) no Hoare annotation was computed. [2021-11-23 16:51:17,497 INFO L858 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-11-23 16:51:17,497 INFO L858 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-11-23 16:51:17,497 INFO L858 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-11-23 16:51:17,498 INFO L858 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-11-23 16:51:17,498 INFO L858 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-11-23 16:51:17,498 INFO L858 garLoopResultBuilder]: For program point L558(lines 558 582) no Hoare annotation was computed. [2021-11-23 16:51:17,498 INFO L858 garLoopResultBuilder]: For program point L393(lines 393 582) no Hoare annotation was computed. [2021-11-23 16:51:17,498 INFO L858 garLoopResultBuilder]: For program point L327(lines 327 582) no Hoare annotation was computed. [2021-11-23 16:51:17,498 INFO L854 garLoopResultBuilder]: At program point L592-2(lines 592 601) the Hoare annotation is: (let ((.cse7 (= (_ bv0 32) ~a10~0)) (.cse9 (= (_ bv10 32) ~a19~0)) (.cse4 (or (not (bvsge (_ bv38 32) ~a1~0)) (not (= (_ bv6 32) ~a19~0)))) (.cse6 (= (_ bv3 32) ~a10~0)) (.cse3 (bvsle (bvsdiv (bvadd (_ bv4289952666 32) (bvmul ~a1~0 (_ bv10 32))) (_ bv9 32)) (_ bv4294967283 32))) (.cse8 (= ~a19~0 (_ bv9 32))) (.cse5 (bvslt (_ bv218 32) ~a1~0)) (.cse0 (= (_ bv14 32) ~a4~0)) (.cse1 (= (_ bv0 32) ~a12~0)) (.cse2 (= (_ bv1 32) ~a10~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse0 .cse1 .cse6) (and .cse0 .cse1 (= (_ bv8 32) ~a19~0)) (and (bvsle ~a1~0 (_ bv4294967283 32)) .cse0 .cse1 .cse3 .cse7) (and .cse0 .cse1 (= (_ bv4 32) ~a10~0)) (and .cse8 .cse0 .cse1 .cse7) (and .cse0 .cse1 .cse9 .cse7) (and .cse0 .cse1 .cse9 .cse2) (and .cse0 .cse1 (= (_ bv2 32) ~a10~0) .cse4) (and .cse0 .cse1 .cse6 .cse3) (and .cse8 .cse5 .cse0 .cse1 .cse2))) [2021-11-23 16:51:17,498 INFO L858 garLoopResultBuilder]: For program point L361(lines 361 582) no Hoare annotation was computed. [2021-11-23 16:51:17,498 INFO L858 garLoopResultBuilder]: For program point L196-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,498 INFO L858 garLoopResultBuilder]: For program point L163-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,498 INFO L858 garLoopResultBuilder]: For program point L130-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,499 INFO L858 garLoopResultBuilder]: For program point L97-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,499 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-11-23 16:51:17,499 INFO L858 garLoopResultBuilder]: For program point L64-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,499 INFO L858 garLoopResultBuilder]: For program point L31-2(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,499 INFO L858 garLoopResultBuilder]: For program point L527(lines 527 582) no Hoare annotation was computed. [2021-11-23 16:51:17,499 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 582) no Hoare annotation was computed. [2021-11-23 16:51:17,499 INFO L858 garLoopResultBuilder]: For program point L230(lines 230 582) no Hoare annotation was computed. [2021-11-23 16:51:17,499 INFO L858 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-11-23 16:51:17,499 INFO L858 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-11-23 16:51:17,499 INFO L858 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-11-23 16:51:17,499 INFO L858 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-11-23 16:51:17,499 INFO L858 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-11-23 16:51:17,500 INFO L858 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-11-23 16:51:17,500 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-23 16:51:17,500 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2021-11-23 16:51:17,500 INFO L858 garLoopResultBuilder]: For program point L429(lines 429 582) no Hoare annotation was computed. [2021-11-23 16:51:17,500 INFO L858 garLoopResultBuilder]: For program point L330(lines 330 582) no Hoare annotation was computed. [2021-11-23 16:51:17,500 INFO L858 garLoopResultBuilder]: For program point L264(lines 264 582) no Hoare annotation was computed. [2021-11-23 16:51:17,500 INFO L858 garLoopResultBuilder]: For program point L364(lines 364 582) no Hoare annotation was computed. [2021-11-23 16:51:17,500 INFO L858 garLoopResultBuilder]: For program point L199-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,500 INFO L858 garLoopResultBuilder]: For program point L166-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,500 INFO L858 garLoopResultBuilder]: For program point L133-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,500 INFO L858 garLoopResultBuilder]: For program point L100-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,501 INFO L858 garLoopResultBuilder]: For program point L67-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,501 INFO L858 garLoopResultBuilder]: For program point L34-1(lines 30 584) no Hoare annotation was computed. [2021-11-23 16:51:17,501 INFO L858 garLoopResultBuilder]: For program point L497(lines 497 582) no Hoare annotation was computed. [2021-11-23 16:51:17,501 INFO L858 garLoopResultBuilder]: For program point L464(lines 464 582) no Hoare annotation was computed. [2021-11-23 16:51:17,501 INFO L858 garLoopResultBuilder]: For program point L398(lines 398 582) no Hoare annotation was computed. [2021-11-23 16:51:17,501 INFO L858 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-11-23 16:51:17,501 INFO L858 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-11-23 16:51:17,501 INFO L858 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-11-23 16:51:17,501 INFO L858 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-11-23 16:51:17,501 INFO L858 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-11-23 16:51:17,501 INFO L858 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-11-23 16:51:17,504 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:51:17,505 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 16:51:17,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:51:17 BoogieIcfgContainer [2021-11-23 16:51:17,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 16:51:17,535 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 16:51:17,535 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 16:51:17,535 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 16:51:17,535 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:47:08" (3/4) ... [2021-11-23 16:51:17,539 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 16:51:17,574 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-23 16:51:17,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 16:51:17,576 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 16:51:17,578 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 16:51:17,708 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/bin/utaipan-fb15Y9Yzbl/witness.graphml [2021-11-23 16:51:17,708 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 16:51:17,709 INFO L158 Benchmark]: Toolchain (without parser) took 253319.81ms. Allocated memory was 83.9MB in the beginning and 146.8MB in the end (delta: 62.9MB). Free memory was 66.9MB in the beginning and 34.4MB in the end (delta: 32.5MB). Peak memory consumption was 95.4MB. Max. memory is 16.1GB. [2021-11-23 16:51:17,710 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 83.9MB. Free memory was 64.2MB in the beginning and 64.1MB in the end (delta: 67.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:51:17,711 INFO L158 Benchmark]: CACSL2BoogieTranslator took 750.73ms. Allocated memory is still 83.9MB. Free memory was 66.6MB in the beginning and 45.3MB in the end (delta: 21.3MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2021-11-23 16:51:17,711 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.82ms. Allocated memory is still 83.9MB. Free memory was 45.3MB in the beginning and 63.0MB in the end (delta: -17.7MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2021-11-23 16:51:17,712 INFO L158 Benchmark]: Boogie Preprocessor took 84.08ms. Allocated memory is still 83.9MB. Free memory was 63.0MB in the beginning and 58.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:51:17,712 INFO L158 Benchmark]: RCFGBuilder took 3057.71ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 58.7MB in the beginning and 45.9MB in the end (delta: 12.9MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2021-11-23 16:51:17,713 INFO L158 Benchmark]: TraceAbstraction took 249137.25ms. Allocated memory was 100.7MB in the beginning and 146.8MB in the end (delta: 46.1MB). Free memory was 45.4MB in the beginning and 50.1MB in the end (delta: -4.8MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. [2021-11-23 16:51:17,713 INFO L158 Benchmark]: Witness Printer took 174.06ms. Allocated memory is still 146.8MB. Free memory was 50.1MB in the beginning and 34.4MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 16:51:17,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 83.9MB. Free memory was 64.2MB in the beginning and 64.1MB in the end (delta: 67.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 750.73ms. Allocated memory is still 83.9MB. Free memory was 66.6MB in the beginning and 45.3MB in the end (delta: 21.3MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 106.82ms. Allocated memory is still 83.9MB. Free memory was 45.3MB in the beginning and 63.0MB in the end (delta: -17.7MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.08ms. Allocated memory is still 83.9MB. Free memory was 63.0MB in the beginning and 58.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 3057.71ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 58.7MB in the beginning and 45.9MB in the end (delta: 12.9MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. * TraceAbstraction took 249137.25ms. Allocated memory was 100.7MB in the beginning and 146.8MB in the end (delta: 46.1MB). Free memory was 45.4MB in the beginning and 50.1MB in the end (delta: -4.8MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. * Witness Printer took 174.06ms. Allocated memory is still 146.8MB. Free memory was 50.1MB in the beginning and 34.4MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 155]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 206 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 249.0s, OverallIterations: 13, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 101.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 2038 SdHoareTripleChecker+Valid, 97.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2038 mSDsluCounter, 1684 SdHoareTripleChecker+Invalid, 87.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 168 mSDsCounter, 1126 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10254 IncrementalHoareTripleChecker+Invalid, 11382 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1126 mSolverCounterUnsat, 1516 mSDtfsCounter, 10254 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9967 GetRequests, 9874 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2506occurred in iteration=10, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 636 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 155 NumberOfFragments, 355 HoareAnnotationTreeSize, 3 FomulaSimplifications, 5816 FormulaSimplificationTreeSizeReduction, 1.5s HoareSimplificationTime, 3 FomulaSimplificationsInter, 10020 FormulaSimplificationTreeSizeReductionInter, 5.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 130.7s InterpolantComputationTime, 6159 NumberOfCodeBlocks, 6159 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 9939 ConstructedInterpolants, 0 QuantifiedInterpolants, 61215 SizeOfPredicates, 66 NumberOfNonLiveVariables, 7393 ConjunctsInSsa, 125 ConjunctsInUnsatCore, 35 InterpolantComputations, 12 PerfectInterpolantSequences, 6521/9845 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 592]: Loop Invariant Derived loop invariant: (((((((((((((14bv32 == a4 && 0bv32 == a12) && 1bv32 == a10) && ~bvsle32(~bvsdiv32(~bvadd64(4289952666bv32, ~bvmul32(a1, 10bv32)), 9bv32), 4294967283bv32)) && (!~bvsge32(38bv32, a1) || !(6bv32 == a19))) || (((~bvslt32(218bv32, a1) && 14bv32 == a4) && 0bv32 == a12) && 3bv32 == a10)) || ((14bv32 == a4 && 0bv32 == a12) && 8bv32 == a19)) || ((((~bvsle32(a1, 4294967283bv32) && 14bv32 == a4) && 0bv32 == a12) && ~bvsle32(~bvsdiv32(~bvadd64(4289952666bv32, ~bvmul32(a1, 10bv32)), 9bv32), 4294967283bv32)) && 0bv32 == a10)) || ((14bv32 == a4 && 0bv32 == a12) && 4bv32 == a10)) || (((a19 == 9bv32 && 14bv32 == a4) && 0bv32 == a12) && 0bv32 == a10)) || (((14bv32 == a4 && 0bv32 == a12) && 10bv32 == a19) && 0bv32 == a10)) || (((14bv32 == a4 && 0bv32 == a12) && 10bv32 == a19) && 1bv32 == a10)) || (((14bv32 == a4 && 0bv32 == a12) && 2bv32 == a10) && (!~bvsge32(38bv32, a1) || !(6bv32 == a19)))) || (((14bv32 == a4 && 0bv32 == a12) && 3bv32 == a10) && ~bvsle32(~bvsdiv32(~bvadd64(4289952666bv32, ~bvmul32(a1, 10bv32)), 9bv32), 4294967283bv32))) || ((((a19 == 9bv32 && ~bvslt32(218bv32, a1)) && 14bv32 == a4) && 0bv32 == a12) && 1bv32 == a10) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((((((((((((14bv32 == a4 && 0bv32 == a12) && 1bv32 == a10) && ~bvsle32(~bvsdiv32(~bvadd64(4289952666bv32, ~bvmul32(a1, 10bv32)), 9bv32), 4294967283bv32)) && (!~bvsge32(38bv32, a1) || !(6bv32 == a19))) || (((~bvslt32(218bv32, a1) && 14bv32 == a4) && 0bv32 == a12) && 3bv32 == a10)) || ((14bv32 == a4 && 0bv32 == a12) && 8bv32 == a19)) || ((((~bvsle32(a1, 4294967283bv32) && 14bv32 == a4) && 0bv32 == a12) && ~bvsle32(~bvsdiv32(~bvadd64(4289952666bv32, ~bvmul32(a1, 10bv32)), 9bv32), 4294967283bv32)) && 0bv32 == a10)) || ((14bv32 == a4 && 0bv32 == a12) && 4bv32 == a10)) || (((a19 == 9bv32 && 14bv32 == a4) && 0bv32 == a12) && 0bv32 == a10)) || (((14bv32 == a4 && 0bv32 == a12) && 10bv32 == a19) && 0bv32 == a10)) || (((14bv32 == a4 && 0bv32 == a12) && 10bv32 == a19) && 1bv32 == a10)) || (((14bv32 == a4 && 0bv32 == a12) && 2bv32 == a10) && (!~bvsge32(38bv32, a1) || !(6bv32 == a19)))) || (((14bv32 == a4 && 0bv32 == a12) && 3bv32 == a10) && ~bvsle32(~bvsdiv32(~bvadd64(4289952666bv32, ~bvmul32(a1, 10bv32)), 9bv32), 4294967283bv32))) || ((((a19 == 9bv32 && ~bvslt32(218bv32, a1)) && 14bv32 == a4) && 0bv32 == a12) && 1bv32 == a10) - InvariantResult [Line: 586]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-23 16:51:17,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75401169-2160-449b-9bbc-fd8c1cd569de/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 Writing output log to file Ultimate.log Result: TRUE