./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG --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 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG --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 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:41:03,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:41:03,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:41:03,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:41:03,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:41:03,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:41:03,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:41:03,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:41:03,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:41:03,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:41:03,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:41:03,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:41:03,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:41:03,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:41:03,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:41:03,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:41:03,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:41:03,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:41:03,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:41:03,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:41:03,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:41:03,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:41:03,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:41:03,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:41:03,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:41:03,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:41:03,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:41:03,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:41:03,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:41:03,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:41:03,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:41:03,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:41:03,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:41:03,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:41:03,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:41:03,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:41:03,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:41:03,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:41:03,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:41:03,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:41:03,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:41:03,515 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:41:03,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:41:03,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:41:03,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:41:03,543 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:41:03,544 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:41:03,544 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:41:03,545 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:41:03,545 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:41:03,548 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:41:03,549 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:41:03,549 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:41:03,550 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:41:03,550 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:41:03,550 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:41:03,551 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:41:03,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:41:03,557 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:41:03,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:41:03,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:41:03,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:41:03,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:41:03,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:41:03,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:41:03,559 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:41:03,559 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:41:03,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:41:03,559 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:41:03,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:41:03,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:41:03,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:41:03,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:41:03,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:41:03,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:41:03,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:41:03,561 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:41:03,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:41:03,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:41:03,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:41:03,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:41:03,562 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_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 [2021-10-29 04:41:03,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:41:03,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:41:03,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:41:03,854 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:41:03,855 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:41:03,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-10-29 04:41:03,945 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/data/35ab93ef3/0d5a97ff6312453baccb6646f9a41d1b/FLAGc9217a6ba [2021-10-29 04:41:04,556 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:41:04,559 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-10-29 04:41:04,586 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/data/35ab93ef3/0d5a97ff6312453baccb6646f9a41d1b/FLAGc9217a6ba [2021-10-29 04:41:04,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/data/35ab93ef3/0d5a97ff6312453baccb6646f9a41d1b [2021-10-29 04:41:04,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:41:04,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:41:04,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:41:04,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:41:04,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:41:04,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:41:04" (1/1) ... [2021-10-29 04:41:04,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@221c3f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:04, skipping insertion in model container [2021-10-29 04:41:04,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:41:04" (1/1) ... [2021-10-29 04:41:04,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:41:04,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:41:05,205 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-10-29 04:41:05,210 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-10-29 04:41:05,211 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-10-29 04:41:05,212 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-10-29 04:41:05,214 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-10-29 04:41:05,216 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-10-29 04:41:05,219 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-10-29 04:41:05,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:41:05,242 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:41:05,302 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-10-29 04:41:05,308 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-10-29 04:41:05,309 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-10-29 04:41:05,310 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-10-29 04:41:05,312 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-10-29 04:41:05,318 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-10-29 04:41:05,320 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-10-29 04:41:05,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:41:05,391 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:41:05,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:05 WrapperNode [2021-10-29 04:41:05,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:41:05,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:41:05,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:41:05,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:41:05,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:05" (1/1) ... [2021-10-29 04:41:05,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:05" (1/1) ... [2021-10-29 04:41:05,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:41:05,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:41:05,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:41:05,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:41:05,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:05" (1/1) ... [2021-10-29 04:41:05,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:05" (1/1) ... [2021-10-29 04:41:05,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:05" (1/1) ... [2021-10-29 04:41:05,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:05" (1/1) ... [2021-10-29 04:41:05,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:05" (1/1) ... [2021-10-29 04:41:05,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:05" (1/1) ... [2021-10-29 04:41:05,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:05" (1/1) ... [2021-10-29 04:41:05,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:41:05,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:41:05,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:41:05,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:41:05,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:05" (1/1) ... [2021-10-29 04:41:05,513 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:41:05,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:41:05,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:41:05,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:41:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 04:41:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 04:41:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 04:41:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 04:41:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:41:05,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 04:41:05,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 04:41:05,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:41:05,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:41:05,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:41:06,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:41:06,555 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-29 04:41:06,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:41:06 BoogieIcfgContainer [2021-10-29 04:41:06,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:41:06,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:41:06,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:41:06,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:41:06,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:41:04" (1/3) ... [2021-10-29 04:41:06,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7131af02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:41:06, skipping insertion in model container [2021-10-29 04:41:06,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:05" (2/3) ... [2021-10-29 04:41:06,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7131af02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:41:06, skipping insertion in model container [2021-10-29 04:41:06,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:41:06" (3/3) ... [2021-10-29 04:41:06,567 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2021-10-29 04:41:06,573 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:41:06,573 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-29 04:41:06,642 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:41:06,649 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:41:06,649 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-29 04:41:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 33 states have (on average 2.0) internal successors, (66), 40 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:06,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 04:41:06,668 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:41:06,669 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 04:41:06,669 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:41:06,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:41:06,675 INFO L85 PathProgramCache]: Analyzing trace with hash 203576989, now seen corresponding path program 1 times [2021-10-29 04:41:06,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:41:06,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59664317] [2021-10-29 04:41:06,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:41:06,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:41:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:41:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:41:06,878 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:41:06,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59664317] [2021-10-29 04:41:06,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59664317] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:41:06,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:41:06,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:41:06,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951865431] [2021-10-29 04:41:06,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:41:06,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:41:06,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:41:06,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:41:06,907 INFO L87 Difference]: Start difference. First operand has 41 states, 33 states have (on average 2.0) internal successors, (66), 40 states have internal predecessors, (66), 0 states have call successors, (0), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:06,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:41:06,928 INFO L93 Difference]: Finished difference Result 81 states and 131 transitions. [2021-10-29 04:41:06,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:41:06,929 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-10-29 04:41:06,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:41:06,936 INFO L225 Difference]: With dead ends: 81 [2021-10-29 04:41:06,936 INFO L226 Difference]: Without dead ends: 39 [2021-10-29 04:41:06,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:41:06,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-29 04:41:06,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-29 04:41:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.28125) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:06,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-29 04:41:06,996 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 5 [2021-10-29 04:41:06,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:41:06,997 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-29 04:41:06,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:06,997 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-29 04:41:06,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:41:06,998 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:41:06,998 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:41:06,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:41:06,999 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:41:07,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:41:07,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1958512255, now seen corresponding path program 1 times [2021-10-29 04:41:07,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:41:07,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062450300] [2021-10-29 04:41:07,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:41:07,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:41:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:41:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:41:07,248 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:41:07,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062450300] [2021-10-29 04:41:07,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062450300] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:41:07,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:41:07,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 04:41:07,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46906244] [2021-10-29 04:41:07,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:41:07,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:41:07,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:41:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:41:07,255 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:07,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:41:07,867 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-29 04:41:07,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:41:07,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 04:41:07,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:41:07,868 INFO L225 Difference]: With dead ends: 39 [2021-10-29 04:41:07,869 INFO L226 Difference]: Without dead ends: 37 [2021-10-29 04:41:07,869 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:41:07,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-29 04:41:07,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-29 04:41:07,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-10-29 04:41:07,876 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 6 [2021-10-29 04:41:07,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:41:07,877 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-10-29 04:41:07,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:07,877 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-10-29 04:41:07,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:41:07,878 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:41:07,878 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:41:07,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 04:41:07,879 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:41:07,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:41:07,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1953024847, now seen corresponding path program 1 times [2021-10-29 04:41:07,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:41:07,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608414616] [2021-10-29 04:41:07,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:41:07,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:41:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:41:08,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:41:08,002 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:41:08,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608414616] [2021-10-29 04:41:08,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608414616] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:41:08,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:41:08,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:41:08,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175328725] [2021-10-29 04:41:08,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:41:08,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:41:08,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:41:08,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:41:08,007 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:08,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:41:08,237 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-10-29 04:41:08,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:41:08,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 04:41:08,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:41:08,240 INFO L225 Difference]: With dead ends: 43 [2021-10-29 04:41:08,241 INFO L226 Difference]: Without dead ends: 41 [2021-10-29 04:41:08,241 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:41:08,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-29 04:41:08,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2021-10-29 04:41:08,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:08,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-10-29 04:41:08,248 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 6 [2021-10-29 04:41:08,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:41:08,248 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-10-29 04:41:08,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:08,249 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-10-29 04:41:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:41:08,250 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:41:08,250 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:41:08,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 04:41:08,251 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:41:08,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:41:08,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1088186010, now seen corresponding path program 1 times [2021-10-29 04:41:08,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:41:08,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793568774] [2021-10-29 04:41:08,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:41:08,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:41:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:41:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:41:08,435 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:41:08,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793568774] [2021-10-29 04:41:08,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793568774] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:41:08,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:41:08,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 04:41:08,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937643585] [2021-10-29 04:41:08,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:41:08,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:41:08,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:41:08,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:41:08,442 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:08,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:41:08,951 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-10-29 04:41:08,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:41:08,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-10-29 04:41:08,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:41:08,955 INFO L225 Difference]: With dead ends: 35 [2021-10-29 04:41:08,955 INFO L226 Difference]: Without dead ends: 33 [2021-10-29 04:41:08,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:41:08,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-29 04:41:08,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-29 04:41:08,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.206896551724138) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:08,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-10-29 04:41:08,960 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 9 [2021-10-29 04:41:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:41:08,960 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-10-29 04:41:08,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-10-29 04:41:08,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:41:08,961 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:41:08,961 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:41:08,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 04:41:08,962 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:41:08,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:41:08,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1354743889, now seen corresponding path program 1 times [2021-10-29 04:41:08,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:41:08,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361835580] [2021-10-29 04:41:08,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:41:08,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:41:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:41:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:41:09,012 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:41:09,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361835580] [2021-10-29 04:41:09,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361835580] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:41:09,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:41:09,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 04:41:09,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257493416] [2021-10-29 04:41:09,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:41:09,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:41:09,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:41:09,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:41:09,015 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:41:09,771 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2021-10-29 04:41:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:41:09,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-10-29 04:41:09,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:41:09,774 INFO L225 Difference]: With dead ends: 58 [2021-10-29 04:41:09,774 INFO L226 Difference]: Without dead ends: 56 [2021-10-29 04:41:09,774 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:41:09,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-29 04:41:09,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 40. [2021-10-29 04:41:09,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-10-29 04:41:09,782 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 9 [2021-10-29 04:41:09,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:41:09,782 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-10-29 04:41:09,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-10-29 04:41:09,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 04:41:09,784 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:41:09,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:41:09,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 04:41:09,784 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:41:09,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:41:09,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2069574902, now seen corresponding path program 1 times [2021-10-29 04:41:09,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:41:09,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757600534] [2021-10-29 04:41:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:41:09,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:41:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:41:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:41:09,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:41:09,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757600534] [2021-10-29 04:41:09,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757600534] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:41:09,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:41:09,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:41:09,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133829862] [2021-10-29 04:41:09,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:41:09,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:41:09,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:41:09,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:41:09,903 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:10,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:41:10,033 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-10-29 04:41:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:41:10,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-10-29 04:41:10,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:41:10,036 INFO L225 Difference]: With dead ends: 40 [2021-10-29 04:41:10,036 INFO L226 Difference]: Without dead ends: 38 [2021-10-29 04:41:10,037 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:41:10,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-29 04:41:10,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-29 04:41:10,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:10,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-10-29 04:41:10,042 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 11 [2021-10-29 04:41:10,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:41:10,042 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-10-29 04:41:10,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:10,043 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-10-29 04:41:10,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 04:41:10,043 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:41:10,043 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:41:10,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 04:41:10,044 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:41:10,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:41:10,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1743206058, now seen corresponding path program 1 times [2021-10-29 04:41:10,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:41:10,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005027661] [2021-10-29 04:41:10,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:41:10,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:41:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:41:10,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:41:10,140 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:41:10,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005027661] [2021-10-29 04:41:10,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005027661] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:41:10,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:41:10,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 04:41:10,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741501389] [2021-10-29 04:41:10,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:41:10,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:41:10,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:41:10,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:41:10,142 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:10,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:41:10,822 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2021-10-29 04:41:10,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:41:10,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2021-10-29 04:41:10,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:41:10,824 INFO L225 Difference]: With dead ends: 53 [2021-10-29 04:41:10,824 INFO L226 Difference]: Without dead ends: 41 [2021-10-29 04:41:10,825 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:41:10,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-29 04:41:10,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-10-29 04:41:10,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.162162162162162) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-10-29 04:41:10,830 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 13 [2021-10-29 04:41:10,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:41:10,830 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-10-29 04:41:10,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:10,831 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-10-29 04:41:10,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 04:41:10,831 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:41:10,832 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:41:10,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 04:41:10,832 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:41:10,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:41:10,833 INFO L85 PathProgramCache]: Analyzing trace with hash -282967061, now seen corresponding path program 1 times [2021-10-29 04:41:10,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:41:10,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887418211] [2021-10-29 04:41:10,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:41:10,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:41:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:41:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:41:10,891 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:41:10,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887418211] [2021-10-29 04:41:10,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887418211] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:41:10,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036772637] [2021-10-29 04:41:10,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:41:10,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:41:10,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:41:10,897 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:41:10,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 04:41:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:41:10,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 04:41:11,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:41:11,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:11,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:11,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:11,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2021-10-29 04:41:11,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:11,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:11,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:11,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2021-10-29 04:41:11,575 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-10-29 04:41:11,583 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2021-10-29 04:41:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:41:11,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:41:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:41:11,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036772637] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:41:11,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1690190296] [2021-10-29 04:41:11,820 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-10-29 04:41:11,820 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:41:11,826 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:41:11,832 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:41:11,833 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:41:11,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,909 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,909 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,912 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,914 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 04:41:11,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-29 04:41:11,916 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,916 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,918 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,920 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-29 04:41:11,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 04:41:11,923 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,927 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-29 04:41:11,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 04:41:11,933 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,937 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-29 04:41:11,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 04:41:11,941 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,941 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,944 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,946 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:41:11,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 04:41:11,948 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,951 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-10-29 04:41:11,956 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,958 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,959 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-29 04:41:11,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 04:41:11,961 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,961 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-29 04:41:11,964 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,981 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,986 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-29 04:41:11,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 04:41:11,989 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-29 04:41:11,997 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:11,998 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:11,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-29 04:41:12,000 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:12,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 04:41:12,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-10-29 04:41:12,049 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_23|], 36=[|v_#valid_33|]} [2021-10-29 04:41:12,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-10-29 04:41:12,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 04:41:12,141 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 04:41:12,142 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 04:41:12,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:12,166 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,533 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-29 04:41:12,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 42 [2021-10-29 04:41:12,535 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 04:41:12,539 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 04:41:12,540 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 04:41:12,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:12,553 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,558 INFO L446 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_46|, |v_#memory_$Pointer$.base_46|], 2=[|v_#memory_int_40|, |v_#memory_int_37|, |v_#memory_int_38|], 4=[|v_#memory_int_39|], 6=[|v_#memory_$Pointer$.base_29|, |v_#memory_$Pointer$.offset_29|, |v_#memory_int_71|]} [2021-10-29 04:41:12,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2021-10-29 04:41:12,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-29 04:41:12,656 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-29 04:41:12,657 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 04:41:12,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:12,673 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2021-10-29 04:41:12,757 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,758 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-29 04:41:12,758 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,759 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-29 04:41:12,759 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 04:41:12,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:12,779 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,792 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-29 04:41:12,794 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,794 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:12,795 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-29 04:41:12,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-29 04:41:12,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,797 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:12,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-29 04:41:12,800 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-29 04:41:12,800 INFO L550 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-29 04:41:12,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:12,820 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,828 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,831 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-29 04:41:12,832 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,832 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:12,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-29 04:41:12,834 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-29 04:41:12,835 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,835 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:12,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-29 04:41:12,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-10-29 04:41:12,838 INFO L550 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-29 04:41:12,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:12,853 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,861 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,862 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 04:41:12,862 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,863 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:12,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 04:41:12,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-29 04:41:12,869 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,869 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:12,870 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 04:41:12,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-29 04:41:12,871 INFO L550 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-29 04:41:12,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:12,883 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,888 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-29 04:41:12,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,890 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:12,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-29 04:41:12,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-29 04:41:12,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,892 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:41:12,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-29 04:41:12,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-29 04:41:12,898 INFO L550 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-29 04:41:12,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:12,911 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 39 [2021-10-29 04:41:12,942 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 04:41:12,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,946 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 04:41:12,946 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-10-29 04:41:12,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:12,955 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:12,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 39 [2021-10-29 04:41:12,982 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 04:41:12,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:12,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 04:41:12,990 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-10-29 04:41:12,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:13,001 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:13,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:13,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:13,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:13,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:13,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:13,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:13,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:13,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:13,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:41:13,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 73 [2021-10-29 04:41:13,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:13,034 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-10-29 04:41:13,036 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:13,037 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-10-29 04:41:13,038 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-10-29 04:41:13,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:13,053 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:13,059 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:13,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 203 [2021-10-29 04:41:13,071 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, 9 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 04:41:13,071 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 11 variables, input treesize:364, output treesize:203 [2021-10-29 04:41:13,089 INFO L180 QuantifierPusher]: treesize reduction 8, result has 96.3 percent of original size [2021-10-29 04:41:13,093 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 203 [2021-10-29 04:41:13,099 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:13,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 203 [2021-10-29 04:41:13,131 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:13,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-10-29 04:41:13,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:13,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-10-29 04:41:13,165 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:13,172 INFO L185 QuantifierPusher]: treesize reduction 9, result has 96.1 percent of original size 221 [2021-10-29 04:41:13,184 INFO L180 QuantifierPusher]: treesize reduction 9, result has 96.4 percent of original size [2021-10-29 04:41:13,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 240 [2021-10-29 04:41:13,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:13,210 INFO L185 QuantifierPusher]: treesize reduction 9, result has 96.1 percent of original size 221 [2021-10-29 04:41:13,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:13,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:13,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:13,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:13,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:13,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:13,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:41:13,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:41:13,289 INFO L185 QuantifierPusher]: treesize reduction 9, result has 96.1 percent of original size 220 [2021-10-29 04:41:13,292 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:41:14,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1690190296] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:41:14,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:41:14,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 11 [2021-10-29 04:41:14,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147486007] [2021-10-29 04:41:14,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 04:41:14,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:41:14,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 04:41:14,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-29 04:41:14,537 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:15,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:41:15,257 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2021-10-29 04:41:15,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 04:41:15,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 04:41:15,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:41:15,263 INFO L225 Difference]: With dead ends: 45 [2021-10-29 04:41:15,263 INFO L226 Difference]: Without dead ends: 20 [2021-10-29 04:41:15,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-29 04:41:15,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-29 04:41:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-29 04:41:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-29 04:41:15,266 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 16 [2021-10-29 04:41:15,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:41:15,267 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-29 04:41:15,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:15,267 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-29 04:41:15,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 04:41:15,267 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:41:15,268 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:41:15,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-29 04:41:15,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-29 04:41:15,482 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:41:15,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:41:15,482 INFO L85 PathProgramCache]: Analyzing trace with hash -78338206, now seen corresponding path program 1 times [2021-10-29 04:41:15,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:41:15,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105937555] [2021-10-29 04:41:15,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:41:15,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:41:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:41:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:41:15,739 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:41:15,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105937555] [2021-10-29 04:41:15,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105937555] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:41:15,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369391704] [2021-10-29 04:41:15,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:41:15,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:41:15,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:41:15,741 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:41:15,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 04:41:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:41:15,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-29 04:41:15,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:41:15,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 04:41:15,964 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-10-29 04:41:15,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-10-29 04:42:01,433 WARN L207 SmtUtils]: Spent 44.87 s on a formula simplification. DAG size of input: 120 DAG size of output: 50 [2021-10-29 04:42:01,434 INFO L354 Elim1Store]: treesize reduction 1891, result has 6.2 percent of original size [2021-10-29 04:42:01,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 4239 treesize of output 4128 [2021-10-29 04:44:52,807 WARN L207 SmtUtils]: Spent 2.85 m on a formula simplification. DAG size of input: 160 DAG size of output: 67 [2021-10-29 04:44:52,808 INFO L354 Elim1Store]: treesize reduction 1198, result has 13.5 percent of original size [2021-10-29 04:44:52,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 3346 treesize of output 3176 [2021-10-29 04:46:44,065 WARN L207 SmtUtils]: Spent 1.85 m on a formula simplification. DAG size of input: 172 DAG size of output: 63 [2021-10-29 04:46:44,066 INFO L354 Elim1Store]: treesize reduction 501, result has 19.3 percent of original size [2021-10-29 04:46:44,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 34 case distinctions, treesize of input 3270 treesize of output 3368 [2021-10-29 04:46:56,389 WARN L207 SmtUtils]: Spent 12.03 s on a formula simplification. DAG size of input: 11 DAG size of output: 5 [2021-10-29 04:46:56,390 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-29 04:46:56,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3367 treesize of output 3373 [2021-10-29 04:46:56,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-10-29 04:46:56,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1783547543] [2021-10-29 04:46:56,552 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-10-29 04:46:56,552 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:46:56,552 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:46:56,553 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:46:56,553 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:46:56,566 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,568 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,569 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 04:46:56,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-29 04:46:56,571 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,572 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-29 04:46:56,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 04:46:56,575 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,576 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,576 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-29 04:46:56,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 04:46:56,578 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,579 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-29 04:46:56,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 04:46:56,581 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,582 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,582 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 04:46:56,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 04:46:56,584 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,584 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-10-29 04:46:56,586 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-29 04:46:56,587 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,588 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-29 04:46:56,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 04:46:56,590 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-29 04:46:56,591 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,592 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 04:46:56,593 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,593 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,594 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,594 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-29 04:46:56,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 04:46:56,595 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 04:46:56,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:46:56,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-29 04:46:56,599 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 373 [2021-10-29 04:46:56,602 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6d1f95dc at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:571) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.doElimAllRec(ElimStorePlain.java:444) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:242) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:402) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:228) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) 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) [2021-10-29 04:46:56,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-29 04:46:56,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-29 04:46:56,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459665936] [2021-10-29 04:46:56,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:46:56,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:46:56,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:46:56,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-29 04:46:56,607 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:46:56,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:46:56,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:46:56,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-29 04:46:56,822 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6d1f95dc at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:869) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) 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) [2021-10-29 04:46:56,823 INFO L168 Benchmark]: Toolchain (without parser) took 351969.65 ms. Allocated memory was 90.2 MB in the beginning and 136.3 MB in the end (delta: 46.1 MB). Free memory was 57.1 MB in the beginning and 66.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. [2021-10-29 04:46:56,824 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory is still 56.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:46:56,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 537.74 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 56.9 MB in the beginning and 86.2 MB in the end (delta: -29.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:46:56,824 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.85 ms. Allocated memory is still 109.1 MB. Free memory was 86.2 MB in the beginning and 84.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:46:56,825 INFO L168 Benchmark]: Boogie Preprocessor took 37.95 ms. Allocated memory is still 109.1 MB. Free memory was 84.2 MB in the beginning and 82.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:46:56,825 INFO L168 Benchmark]: RCFGBuilder took 1053.77 ms. Allocated memory is still 109.1 MB. Free memory was 82.0 MB in the beginning and 54.8 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:46:56,825 INFO L168 Benchmark]: TraceAbstraction took 350263.26 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 54.4 MB in the beginning and 66.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:46:56,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory is still 56.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 537.74 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 56.9 MB in the beginning and 86.2 MB in the end (delta: -29.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.85 ms. Allocated memory is still 109.1 MB. Free memory was 86.2 MB in the beginning and 84.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.95 ms. Allocated memory is still 109.1 MB. Free memory was 84.2 MB in the beginning and 82.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1053.77 ms. Allocated memory is still 109.1 MB. Free memory was 82.0 MB in the beginning and 54.8 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 350263.26 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 54.4 MB in the beginning and 66.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6d1f95dc de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6d1f95dc: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-29 04:46:56,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:46:59,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:46:59,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:46:59,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:46:59,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:46:59,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:46:59,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:46:59,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:46:59,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:46:59,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:46:59,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:46:59,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:46:59,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:46:59,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:46:59,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:46:59,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:46:59,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:46:59,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:46:59,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:46:59,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:46:59,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:46:59,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:46:59,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:46:59,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:46:59,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:46:59,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:46:59,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:46:59,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:46:59,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:46:59,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:46:59,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:46:59,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:46:59,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:46:59,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:46:59,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:46:59,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:46:59,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:46:59,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:46:59,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:46:59,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:46:59,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:46:59,355 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 04:46:59,382 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:46:59,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:46:59,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:46:59,384 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:46:59,384 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:46:59,385 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:46:59,385 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:46:59,385 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:46:59,386 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:46:59,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:46:59,387 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:46:59,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:46:59,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:46:59,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:46:59,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:46:59,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:46:59,389 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:46:59,389 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 04:46:59,389 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 04:46:59,389 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:46:59,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:46:59,390 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:46:59,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:46:59,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:46:59,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 04:46:59,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:46:59,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:46:59,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:46:59,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:46:59,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:46:59,393 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 04:46:59,393 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 04:46:59,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:46:59,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:46:59,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:46:59,394 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_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 [2021-10-29 04:46:59,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:46:59,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:46:59,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:46:59,843 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:46:59,844 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:46:59,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-10-29 04:46:59,929 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/data/596a65105/64c7c83094b64324a923b2d958233116/FLAG1f19106a3 [2021-10-29 04:47:00,570 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:47:00,570 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2021-10-29 04:47:00,591 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/data/596a65105/64c7c83094b64324a923b2d958233116/FLAG1f19106a3 [2021-10-29 04:47:00,800 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/data/596a65105/64c7c83094b64324a923b2d958233116 [2021-10-29 04:47:00,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:47:00,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:47:00,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:47:00,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:47:00,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:47:00,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:47:00" (1/1) ... [2021-10-29 04:47:00,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dff7034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:00, skipping insertion in model container [2021-10-29 04:47:00,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:47:00" (1/1) ... [2021-10-29 04:47:00,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:47:00,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:47:01,253 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-10-29 04:47:01,256 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-10-29 04:47:01,257 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-10-29 04:47:01,268 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-10-29 04:47:01,269 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-10-29 04:47:01,271 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-10-29 04:47:01,284 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-10-29 04:47:01,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:47:01,302 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:47:01,338 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2021-10-29 04:47:01,339 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2021-10-29 04:47:01,340 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2021-10-29 04:47:01,341 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2021-10-29 04:47:01,342 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2021-10-29 04:47:01,343 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2021-10-29 04:47:01,344 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2021-10-29 04:47:01,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:47:01,382 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:47:01,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:01 WrapperNode [2021-10-29 04:47:01,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:47:01,384 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:47:01,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:47:01,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:47:01,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:01" (1/1) ... [2021-10-29 04:47:01,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:01" (1/1) ... [2021-10-29 04:47:01,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:47:01,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:47:01,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:47:01,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:47:01,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:01" (1/1) ... [2021-10-29 04:47:01,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:01" (1/1) ... [2021-10-29 04:47:01,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:01" (1/1) ... [2021-10-29 04:47:01,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:01" (1/1) ... [2021-10-29 04:47:01,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:01" (1/1) ... [2021-10-29 04:47:01,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:01" (1/1) ... [2021-10-29 04:47:01,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:01" (1/1) ... [2021-10-29 04:47:01,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:47:01,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:47:01,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:47:01,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:47:01,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:01" (1/1) ... [2021-10-29 04:47:01,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:47:01,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:47:01,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:47:01,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:47:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 04:47:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 04:47:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 04:47:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:47:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 04:47:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 04:47:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 04:47:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 04:47:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:47:01,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:47:02,979 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:47:02,979 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-29 04:47:02,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:47:02 BoogieIcfgContainer [2021-10-29 04:47:02,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:47:02,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:47:02,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:47:02,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:47:02,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:47:00" (1/3) ... [2021-10-29 04:47:02,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76238930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:47:02, skipping insertion in model container [2021-10-29 04:47:02,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:01" (2/3) ... [2021-10-29 04:47:02,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76238930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:47:02, skipping insertion in model container [2021-10-29 04:47:02,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:47:02" (3/3) ... [2021-10-29 04:47:02,990 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2021-10-29 04:47:02,996 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:47:02,996 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-29 04:47:03,047 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:47:03,053 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:47:03,054 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-29 04:47:03,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 38 states have (on average 1.9736842105263157) internal successors, (75), 45 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:03,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:47:03,075 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:03,076 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:47:03,077 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:47:03,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:03,082 INFO L85 PathProgramCache]: Analyzing trace with hash 891569350, now seen corresponding path program 1 times [2021-10-29 04:47:03,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:47:03,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51940906] [2021-10-29 04:47:03,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:03,096 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:47:03,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:47:03,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:47:03,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 04:47:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:03,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 04:47:03,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:47:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:03,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:47:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:03,298 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:47:03,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51940906] [2021-10-29 04:47:03,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51940906] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:03,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:47:03,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 04:47:03,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842070002] [2021-10-29 04:47:03,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:47:03,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:47:03,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:47:03,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:47:03,334 INFO L87 Difference]: Start difference. First operand has 46 states, 38 states have (on average 1.9736842105263157) internal successors, (75), 45 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:03,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:03,371 INFO L93 Difference]: Finished difference Result 90 states and 148 transitions. [2021-10-29 04:47:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:47:03,375 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 04:47:03,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:03,387 INFO L225 Difference]: With dead ends: 90 [2021-10-29 04:47:03,401 INFO L226 Difference]: Without dead ends: 40 [2021-10-29 04:47:03,404 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:47:03,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-29 04:47:03,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-29 04:47:03,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.303030303030303) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:03,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-10-29 04:47:03,453 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 6 [2021-10-29 04:47:03,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:03,454 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-10-29 04:47:03,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:03,455 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-10-29 04:47:03,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:47:03,455 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:03,456 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:47:03,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:47:03,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:47:03,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:47:03,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:03,671 INFO L85 PathProgramCache]: Analyzing trace with hash 889692517, now seen corresponding path program 1 times [2021-10-29 04:47:03,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:47:03,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688431066] [2021-10-29 04:47:03,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:03,672 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:47:03,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:47:03,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:47:03,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 04:47:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:03,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 04:47:03,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:47:03,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-10-29 04:47:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:03,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:47:03,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:03,974 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:47:03,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688431066] [2021-10-29 04:47:03,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688431066] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:03,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:47:03,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 04:47:03,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078010601] [2021-10-29 04:47:03,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:47:03,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:47:03,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:47:03,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:47:03,978 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:04,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:04,780 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-10-29 04:47:04,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:47:04,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 04:47:04,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:04,783 INFO L225 Difference]: With dead ends: 45 [2021-10-29 04:47:04,783 INFO L226 Difference]: Without dead ends: 43 [2021-10-29 04:47:04,784 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:47:04,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-29 04:47:04,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2021-10-29 04:47:04,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.28125) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-10-29 04:47:04,790 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 6 [2021-10-29 04:47:04,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:04,790 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-10-29 04:47:04,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:04,791 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-10-29 04:47:04,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 04:47:04,791 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:04,792 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:47:04,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:47:05,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:47:05,004 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:47:05,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:05,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1810723981, now seen corresponding path program 1 times [2021-10-29 04:47:05,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:47:05,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573072616] [2021-10-29 04:47:05,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:05,007 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:47:05,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:47:05,008 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:47:05,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 04:47:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:05,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 04:47:05,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:47:05,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 04:47:05,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-29 04:47:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:05,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:47:05,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:05,238 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:47:05,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573072616] [2021-10-29 04:47:05,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573072616] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:05,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:47:05,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 04:47:05,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434082970] [2021-10-29 04:47:05,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:47:05,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:47:05,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:47:05,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:47:05,251 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:05,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:05,612 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-10-29 04:47:05,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:47:05,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 04:47:05,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:05,614 INFO L225 Difference]: With dead ends: 38 [2021-10-29 04:47:05,614 INFO L226 Difference]: Without dead ends: 36 [2021-10-29 04:47:05,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:47:05,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-29 04:47:05,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-29 04:47:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 35 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-10-29 04:47:05,620 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 7 [2021-10-29 04:47:05,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:05,621 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-10-29 04:47:05,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:05,621 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-10-29 04:47:05,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:47:05,622 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:05,622 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:47:05,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:47:05,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:47:05,823 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:47:05,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:05,823 INFO L85 PathProgramCache]: Analyzing trace with hash 590587384, now seen corresponding path program 1 times [2021-10-29 04:47:05,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:47:05,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505276681] [2021-10-29 04:47:05,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:05,824 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:47:05,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:47:05,825 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:47:05,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 04:47:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:05,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 04:47:05,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:47:05,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 04:47:06,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-29 04:47:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:06,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:47:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:06,172 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:47:06,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505276681] [2021-10-29 04:47:06,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505276681] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:06,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:47:06,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-29 04:47:06,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618593127] [2021-10-29 04:47:06,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 04:47:06,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:47:06,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 04:47:06,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:47:06,175 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:08,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:08,159 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2021-10-29 04:47:08,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 04:47:08,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 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 9 [2021-10-29 04:47:08,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:08,161 INFO L225 Difference]: With dead ends: 75 [2021-10-29 04:47:08,161 INFO L226 Difference]: Without dead ends: 73 [2021-10-29 04:47:08,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-29 04:47:08,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-29 04:47:08,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 52. [2021-10-29 04:47:08,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 51 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:08,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2021-10-29 04:47:08,175 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 9 [2021-10-29 04:47:08,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:08,176 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2021-10-29 04:47:08,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:08,176 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2021-10-29 04:47:08,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:47:08,177 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:08,177 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:47:08,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 04:47:08,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:47:08,389 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:47:08,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:08,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1507179337, now seen corresponding path program 1 times [2021-10-29 04:47:08,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:47:08,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686537600] [2021-10-29 04:47:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:08,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:47:08,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:47:08,397 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:47:08,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 04:47:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:08,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 04:47:08,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:47:09,927 INFO L354 Elim1Store]: treesize reduction 163, result has 25.6 percent of original size [2021-10-29 04:47:09,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 126 [2021-10-29 04:47:10,700 INFO L354 Elim1Store]: treesize reduction 163, result has 25.6 percent of original size [2021-10-29 04:47:10,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 111 [2021-10-29 04:47:14,192 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:47:14,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 142 [2021-10-29 04:47:14,248 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:47:14,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 142 treesize of output 141 [2021-10-29 04:47:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:15,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:47:15,204 INFO L354 Elim1Store]: treesize reduction 235, result has 0.4 percent of original size [2021-10-29 04:47:15,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 1 [2021-10-29 04:47:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:15,212 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:47:15,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686537600] [2021-10-29 04:47:15,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686537600] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:15,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:47:15,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-10-29 04:47:15,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42727375] [2021-10-29 04:47:15,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 04:47:15,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:47:15,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 04:47:15,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:47:15,215 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:20,143 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2021-10-29 04:47:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 04:47:20,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 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 10 [2021-10-29 04:47:20,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:20,145 INFO L225 Difference]: With dead ends: 64 [2021-10-29 04:47:20,145 INFO L226 Difference]: Without dead ends: 62 [2021-10-29 04:47:20,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-29 04:47:20,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-29 04:47:20,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2021-10-29 04:47:20,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:20,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-10-29 04:47:20,152 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 10 [2021-10-29 04:47:20,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:20,153 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-10-29 04:47:20,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:20,154 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-10-29 04:47:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 04:47:20,154 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:20,155 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:47:20,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 04:47:20,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:47:20,356 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:47:20,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:20,356 INFO L85 PathProgramCache]: Analyzing trace with hash -995236357, now seen corresponding path program 1 times [2021-10-29 04:47:20,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:47:20,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953617009] [2021-10-29 04:47:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:20,357 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:47:20,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:47:20,357 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:47:20,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 04:47:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:20,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 04:47:20,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:47:20,599 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-29 04:47:20,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2021-10-29 04:47:20,701 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-10-29 04:47:20,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 78 [2021-10-29 04:47:20,912 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-10-29 04:47:20,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 92 [2021-10-29 04:47:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:21,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:47:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:25,143 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:47:25,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953617009] [2021-10-29 04:47:25,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953617009] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:25,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:47:25,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-29 04:47:25,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075807258] [2021-10-29 04:47:25,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 04:47:25,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:47:25,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 04:47:25,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-10-29 04:47:25,145 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:27,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:27,393 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2021-10-29 04:47:27,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:47:27,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 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 12 [2021-10-29 04:47:27,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:27,394 INFO L225 Difference]: With dead ends: 51 [2021-10-29 04:47:27,395 INFO L226 Difference]: Without dead ends: 49 [2021-10-29 04:47:27,395 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-10-29 04:47:27,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-29 04:47:27,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2021-10-29 04:47:27,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.2) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2021-10-29 04:47:27,402 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 12 [2021-10-29 04:47:27,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:27,402 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2021-10-29 04:47:27,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2021-10-29 04:47:27,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 04:47:27,404 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:27,404 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:47:27,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-29 04:47:27,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:47:27,617 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:47:27,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:27,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2079156959, now seen corresponding path program 1 times [2021-10-29 04:47:27,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:47:27,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538360758] [2021-10-29 04:47:27,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:27,618 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:47:27,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:47:27,619 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:47:27,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 04:47:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:27,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 04:47:27,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:47:27,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 04:47:27,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-29 04:47:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:27,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:47:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:28,004 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:47:28,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538360758] [2021-10-29 04:47:28,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538360758] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:28,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:47:28,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-29 04:47:28,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083799481] [2021-10-29 04:47:28,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:47:28,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:47:28,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:47:28,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 04:47:28,006 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:30,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:30,918 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2021-10-29 04:47:30,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 04:47:30,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 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 13 [2021-10-29 04:47:30,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:30,920 INFO L225 Difference]: With dead ends: 77 [2021-10-29 04:47:30,920 INFO L226 Difference]: Without dead ends: 65 [2021-10-29 04:47:30,920 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-29 04:47:30,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-29 04:47:30,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2021-10-29 04:47:30,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.1875) internal successors, (57), 50 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:30,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-10-29 04:47:30,926 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 13 [2021-10-29 04:47:30,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:30,927 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-10-29 04:47:30,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:30,927 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-10-29 04:47:30,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 04:47:30,929 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:30,929 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:47:30,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 04:47:31,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:47:31,140 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:47:31,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:31,141 INFO L85 PathProgramCache]: Analyzing trace with hash -734247455, now seen corresponding path program 1 times [2021-10-29 04:47:31,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:47:31,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099358085] [2021-10-29 04:47:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:31,141 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:47:31,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:47:31,142 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:47:31,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 04:47:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:31,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 04:47:31,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:47:31,370 INFO L354 Elim1Store]: treesize reduction 82, result has 17.2 percent of original size [2021-10-29 04:47:31,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 17 [2021-10-29 04:47:31,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:47:31,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:47:31,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:47:31,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2021-10-29 04:47:31,794 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-29 04:47:31,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2021-10-29 04:47:31,802 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-29 04:47:31,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2021-10-29 04:47:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:31,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:47:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:32,054 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:47:32,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099358085] [2021-10-29 04:47:32,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099358085] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:47:32,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2006452329] [2021-10-29 04:47:32,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:32,054 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 04:47:32,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 04:47:32,061 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 04:47:32,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-29 04:47:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:32,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 04:47:32,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:47:32,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:47:32,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:47:32,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:47:32,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2021-10-29 04:47:32,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:47:32,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:47:32,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:47:32,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2021-10-29 04:47:32,731 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:47:32,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-10-29 04:47:32,737 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:47:32,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2021-10-29 04:47:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:32,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:47:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:32,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2006452329] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:47:32,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962888404] [2021-10-29 04:47:32,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:32,910 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:47:32,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:47:32,914 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:47:32,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-29 04:47:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:33,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 04:47:33,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:47:33,163 INFO L354 Elim1Store]: treesize reduction 82, result has 17.2 percent of original size [2021-10-29 04:47:33,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 17 [2021-10-29 04:47:33,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:47:33,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:47:33,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:47:33,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2021-10-29 04:47:33,506 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-29 04:47:33,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2021-10-29 04:47:33,514 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-29 04:47:33,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2021-10-29 04:47:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:33,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:47:33,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:33,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962888404] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:47:33,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 04:47:33,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 12 [2021-10-29 04:47:33,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997268259] [2021-10-29 04:47:33,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 04:47:33,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:47:33,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 04:47:33,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-29 04:47:33,661 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:37,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:37,520 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2021-10-29 04:47:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:47:37,521 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 04:47:37,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:37,522 INFO L225 Difference]: With dead ends: 73 [2021-10-29 04:47:37,522 INFO L226 Difference]: Without dead ends: 51 [2021-10-29 04:47:37,523 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-29 04:47:37,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-29 04:47:37,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-29 04:47:37,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 50 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-10-29 04:47:37,529 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 16 [2021-10-29 04:47:37,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:37,530 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-10-29 04:47:37,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:37,530 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-10-29 04:47:37,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 04:47:37,531 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:37,531 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:47:37,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-10-29 04:47:37,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 04:47:37,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-29 04:47:38,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:47:38,132 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-29 04:47:38,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:38,132 INFO L85 PathProgramCache]: Analyzing trace with hash -587248931, now seen corresponding path program 1 times [2021-10-29 04:47:38,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:47:38,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819014471] [2021-10-29 04:47:38,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:38,133 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:47:38,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:47:38,135 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:47:38,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-29 04:47:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:38,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-29 04:47:38,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:47:38,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-29 04:47:38,514 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-29 04:47:38,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-29 04:47:38,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:47:38,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:47:38,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-10-29 04:47:38,604 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:47:38,605 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-10-29 04:47:38,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:47:38,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 04:47:38,682 INFO L354 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2021-10-29 04:47:38,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 51 [2021-10-29 04:47:38,719 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-29 04:47:38,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 48 [2021-10-29 04:47:38,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:47:38,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819014471] [2021-10-29 04:47:38,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-10-29 04:47:38,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [804520693] [2021-10-29 04:47:38,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:38,848 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 04:47:38,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 04:47:38,853 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 04:47:38,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-10-29 04:47:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:39,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-29 04:47:39,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@19eff8ef [2021-10-29 04:47:39,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025078772] [2021-10-29 04:47:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:39,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:47:39,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:47:39,154 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:47:39,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-29 04:47:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:39,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-29 04:47:39,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@19eff8ef [2021-10-29 04:47:39,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:47:39,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-29 04:47:39,366 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-29 04:47:39,366 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-29 04:47:39,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:47:39,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:47:39,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:47:39,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:47:39,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:47:39,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:47:39,376 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:47:39,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-10-29 04:47:39,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-10-29 04:47:39,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-29 04:47:39,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:47:39,982 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:47:39,984 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:47:39,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:47:39 BoogieIcfgContainer [2021-10-29 04:47:40,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:47:40,000 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:47:40,000 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:47:40,001 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:47:40,001 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:47:02" (3/4) ... [2021-10-29 04:47:40,004 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 04:47:40,004 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:47:40,009 INFO L168 Benchmark]: Toolchain (without parser) took 39199.17 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 39.4 MB in the beginning and 38.5 MB in the end (delta: 846.7 kB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. [2021-10-29 04:47:40,009 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 60.8 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:47:40,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 574.26 ms. Allocated memory is still 60.8 MB. Free memory was 39.2 MB in the beginning and 35.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 04:47:40,012 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.64 ms. Allocated memory is still 60.8 MB. Free memory was 35.7 MB in the beginning and 33.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:47:40,012 INFO L168 Benchmark]: Boogie Preprocessor took 39.69 ms. Allocated memory is still 60.8 MB. Free memory was 33.4 MB in the beginning and 31.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:47:40,013 INFO L168 Benchmark]: RCFGBuilder took 1503.38 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 31.3 MB in the beginning and 52.2 MB in the end (delta: -20.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:47:40,014 INFO L168 Benchmark]: TraceAbstraction took 37015.93 ms. Allocated memory is still 83.9 MB. Free memory was 51.4 MB in the beginning and 39.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-10-29 04:47:40,017 INFO L168 Benchmark]: Witness Printer took 4.46 ms. Allocated memory is still 83.9 MB. Free memory was 39.3 MB in the beginning and 38.5 MB in the end (delta: 763.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:47:40,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 60.8 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 574.26 ms. Allocated memory is still 60.8 MB. Free memory was 39.2 MB in the beginning and 35.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.64 ms. Allocated memory is still 60.8 MB. Free memory was 35.7 MB in the beginning and 33.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.69 ms. Allocated memory is still 60.8 MB. Free memory was 33.4 MB in the beginning and 31.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1503.38 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 31.3 MB in the beginning and 52.2 MB in the end (delta: -20.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 37015.93 ms. Allocated memory is still 83.9 MB. Free memory was 51.4 MB in the beginning and 39.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.46 ms. Allocated memory is still 83.9 MB. Free memory was 39.3 MB in the beginning and 38.5 MB in the end (delta: 763.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1042]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L998] struct TSLL* null = malloc(sizeof(struct TSLL)); [L999] null->next = ((void*)0) [L1000] null->prev = ((void*)0) [L1001] null->colour = BLACK [L1003] struct TSLL* list = malloc(sizeof(struct TSLL)); [L1004] list->next = null [L1005] list->prev = null [L1006] list->colour = BLACK [L1008] struct TSLL* end = list; [L1011] COND TRUE __VERIFIER_nondet_int() [L1014] end->next = malloc(sizeof(struct TSLL)) [L1015] EXPR end->next [L1015] end->next->prev = end [L1016] EXPR end->next [L1016] end = end->next [L1017] end->next = null [L1019] COND FALSE !(__VERIFIER_nondet_int()) [L1025] end->colour = RED [L1026] end->next = malloc(sizeof(struct TSLL)) [L1027] EXPR end->next [L1027] end->next->prev = end [L1028] EXPR end->next [L1028] end = end->next [L1029] end->next = null [L1030] end->colour = BLACK [L1032] EXPR end->colour [L1032] COND FALSE !(!(BLACK == end->colour)) [L1033] EXPR end->next [L1033] COND FALSE !(!(null == end->next)) [L1034] COND FALSE !(!(null != end)) [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list [L1041] COND FALSE !(!(null != end)) [L1042] EXPR end->colour [L1042] COND TRUE !(BLACK == end->colour) [L1042] reach_error() - UnprovableResult [Line: 1032]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1034]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 36.9s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 17.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 246 SDtfs, 279 SDslu, 482 SDs, 0 SdLazy, 423 SolverSat, 62 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 16.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 216 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=4, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 53 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 202 ConstructedInterpolants, 6 QuantifiedInterpolants, 2694 SizeOfPredicates, 38 NumberOfNonLiveVariables, 683 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 6/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 04:47:40,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f35fa2a-ac01-410a-a38f-143fc68032c7/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...