./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label29.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label29.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS --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 372b0f8557f493ed9d29c5f8057b8dc54ad330866696fd4878e863a88379edbf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:51:12,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:51:12,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:51:12,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:51:12,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:51:12,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:51:12,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:51:12,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:51:12,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:51:12,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:51:12,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:51:12,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:51:12,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:51:12,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:51:12,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:51:12,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:51:12,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:51:12,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:51:12,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:51:12,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:51:12,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:51:12,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:51:12,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:51:12,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:51:12,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:51:12,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:51:12,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:51:12,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:51:12,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:51:12,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:51:12,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:51:12,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:51:12,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:51:12,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:51:12,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:51:12,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:51:12,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:51:12,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:51:12,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:51:12,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:51:12,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:51:12,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:51:12,391 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:51:12,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:51:12,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:51:12,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:51:12,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:51:12,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:51:12,394 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:51:12,395 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:51:12,395 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:51:12,395 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:51:12,396 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:51:12,397 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:51:12,397 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:51:12,397 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:51:12,397 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:51:12,398 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:51:12,398 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:51:12,398 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:51:12,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:51:12,400 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:51:12,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:51:12,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:51:12,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:51:12,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:51:12,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:51:12,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:51:12,403 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:51:12,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:51:12,403 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:51:12,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:51:12,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:51:12,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:51:12,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:51:12,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:51:12,405 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:51:12,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:51:12,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:51:12,406 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:51:12,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:51:12,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:51:12,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:51:12,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 372b0f8557f493ed9d29c5f8057b8dc54ad330866696fd4878e863a88379edbf [2022-11-19 06:51:12,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:51:12,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:51:12,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:51:12,736 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:51:12,737 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:51:12,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/eca-rers2012/Problem03_label29.c [2022-11-19 06:51:12,816 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/data/b97fe3e63/d173d4e8ca4f436faac669d4c6c160b9/FLAGff36575c2 [2022-11-19 06:51:13,512 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:51:13,513 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/sv-benchmarks/c/eca-rers2012/Problem03_label29.c [2022-11-19 06:51:13,543 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/data/b97fe3e63/d173d4e8ca4f436faac669d4c6c160b9/FLAGff36575c2 [2022-11-19 06:51:13,679 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/data/b97fe3e63/d173d4e8ca4f436faac669d4c6c160b9 [2022-11-19 06:51:13,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:51:13,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:51:13,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:51:13,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:51:13,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:51:13,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:51:13" (1/1) ... [2022-11-19 06:51:13,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@753b1549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:13, skipping insertion in model container [2022-11-19 06:51:13,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:51:13" (1/1) ... [2022-11-19 06:51:13,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:51:13,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:51:14,445 WARN L234 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_b5eeddbe-daaa-4498-af76-44c33b270edc/sv-benchmarks/c/eca-rers2012/Problem03_label29.c[58258,58271] [2022-11-19 06:51:14,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:51:14,512 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:51:14,795 WARN L234 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_b5eeddbe-daaa-4498-af76-44c33b270edc/sv-benchmarks/c/eca-rers2012/Problem03_label29.c[58258,58271] [2022-11-19 06:51:14,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:51:14,828 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:51:14,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:14 WrapperNode [2022-11-19 06:51:14,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:51:14,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:51:14,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:51:14,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:51:14,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:14" (1/1) ... [2022-11-19 06:51:14,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:14" (1/1) ... [2022-11-19 06:51:14,975 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-11-19 06:51:14,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:51:14,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:51:14,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:51:14,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:51:14,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:14" (1/1) ... [2022-11-19 06:51:14,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:14" (1/1) ... [2022-11-19 06:51:14,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:14" (1/1) ... [2022-11-19 06:51:14,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:14" (1/1) ... [2022-11-19 06:51:15,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:14" (1/1) ... [2022-11-19 06:51:15,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:14" (1/1) ... [2022-11-19 06:51:15,120 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:14" (1/1) ... [2022-11-19 06:51:15,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:14" (1/1) ... [2022-11-19 06:51:15,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:51:15,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:51:15,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:51:15,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:51:15,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:14" (1/1) ... [2022-11-19 06:51:15,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:51:15,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:51:15,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:51:15,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:51:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:51:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:51:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:51:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:51:15,329 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:51:15,331 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:51:17,497 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:51:17,859 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:51:17,859 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:51:17,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:51:17 BoogieIcfgContainer [2022-11-19 06:51:17,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:51:17,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:51:17,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:51:17,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:51:17,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:51:13" (1/3) ... [2022-11-19 06:51:17,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ac64ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:51:17, skipping insertion in model container [2022-11-19 06:51:17,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:14" (2/3) ... [2022-11-19 06:51:17,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ac64ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:51:17, skipping insertion in model container [2022-11-19 06:51:17,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:51:17" (3/3) ... [2022-11-19 06:51:17,874 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label29.c [2022-11-19 06:51:17,894 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:51:17,894 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:51:17,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:51:17,987 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5166c16d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:51:17,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:51:17,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 146 states have (on average 1.9726027397260273) internal successors, (288), 147 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:18,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-19 06:51:18,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:18,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:18,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:18,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:18,022 INFO L85 PathProgramCache]: Analyzing trace with hash 209345719, now seen corresponding path program 1 times [2022-11-19 06:51:18,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:18,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703788207] [2022-11-19 06:51:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:18,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:51:19,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:19,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703788207] [2022-11-19 06:51:19,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703788207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:19,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:19,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:51:19,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594896570] [2022-11-19 06:51:19,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:19,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:19,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:19,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:19,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:19,184 INFO L87 Difference]: Start difference. First operand has 148 states, 146 states have (on average 1.9726027397260273) internal successors, (288), 147 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:20,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:20,356 INFO L93 Difference]: Finished difference Result 440 states and 860 transitions. [2022-11-19 06:51:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:20,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-11-19 06:51:20,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:20,372 INFO L225 Difference]: With dead ends: 440 [2022-11-19 06:51:20,372 INFO L226 Difference]: Without dead ends: 289 [2022-11-19 06:51:20,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:20,379 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 11 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:20,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 103 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 06:51:20,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-19 06:51:20,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-11-19 06:51:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.5902777777777777) internal successors, (458), 288 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 458 transitions. [2022-11-19 06:51:20,435 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 458 transitions. Word has length 143 [2022-11-19 06:51:20,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:20,436 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 458 transitions. [2022-11-19 06:51:20,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:20,437 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 458 transitions. [2022-11-19 06:51:20,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-19 06:51:20,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:20,440 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:20,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:51:20,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:20,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:20,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1094386006, now seen corresponding path program 1 times [2022-11-19 06:51:20,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:20,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169827152] [2022-11-19 06:51:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:20,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:51:20,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:20,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169827152] [2022-11-19 06:51:20,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169827152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:20,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:20,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:51:20,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164166660] [2022-11-19 06:51:20,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:20,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:20,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:20,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:20,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:20,748 INFO L87 Difference]: Start difference. First operand 289 states and 458 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:21,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:21,753 INFO L93 Difference]: Finished difference Result 863 states and 1371 transitions. [2022-11-19 06:51:21,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:21,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2022-11-19 06:51:21,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:21,757 INFO L225 Difference]: With dead ends: 863 [2022-11-19 06:51:21,757 INFO L226 Difference]: Without dead ends: 575 [2022-11-19 06:51:21,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:21,760 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 157 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:21,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 25 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 06:51:21,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-19 06:51:21,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2022-11-19 06:51:21,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.5470383275261324) internal successors, (888), 574 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 888 transitions. [2022-11-19 06:51:21,791 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 888 transitions. Word has length 151 [2022-11-19 06:51:21,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:21,792 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 888 transitions. [2022-11-19 06:51:21,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:21,792 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 888 transitions. [2022-11-19 06:51:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-19 06:51:21,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:21,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:21,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:51:21,797 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:21,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:21,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1988463347, now seen corresponding path program 1 times [2022-11-19 06:51:21,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:21,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431760811] [2022-11-19 06:51:21,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:21,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:51:22,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:22,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431760811] [2022-11-19 06:51:22,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431760811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:22,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:22,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:51:22,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16637372] [2022-11-19 06:51:22,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:22,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:22,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:22,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:22,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:22,119 INFO L87 Difference]: Start difference. First operand 575 states and 888 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:23,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:23,164 INFO L93 Difference]: Finished difference Result 1723 states and 2662 transitions. [2022-11-19 06:51:23,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:23,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2022-11-19 06:51:23,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:23,169 INFO L225 Difference]: With dead ends: 1723 [2022-11-19 06:51:23,169 INFO L226 Difference]: Without dead ends: 1149 [2022-11-19 06:51:23,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:23,172 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 158 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:23,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 105 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 06:51:23,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2022-11-19 06:51:23,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1147. [2022-11-19 06:51:23,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 1.4589877835951135) internal successors, (1672), 1146 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1672 transitions. [2022-11-19 06:51:23,216 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1672 transitions. Word has length 156 [2022-11-19 06:51:23,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:23,217 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 1672 transitions. [2022-11-19 06:51:23,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:23,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1672 transitions. [2022-11-19 06:51:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-19 06:51:23,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:23,224 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:23,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:51:23,225 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:23,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:23,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1051101443, now seen corresponding path program 1 times [2022-11-19 06:51:23,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:23,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898245151] [2022-11-19 06:51:23,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:23,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:51:23,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:23,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898245151] [2022-11-19 06:51:23,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898245151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:23,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:23,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:51:23,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158171437] [2022-11-19 06:51:23,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:23,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:23,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:23,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:23,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:23,517 INFO L87 Difference]: Start difference. First operand 1147 states and 1672 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:24,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:24,418 INFO L93 Difference]: Finished difference Result 2865 states and 4341 transitions. [2022-11-19 06:51:24,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:24,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 163 [2022-11-19 06:51:24,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:24,424 INFO L225 Difference]: With dead ends: 2865 [2022-11-19 06:51:24,424 INFO L226 Difference]: Without dead ends: 1719 [2022-11-19 06:51:24,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:24,428 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 153 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:24,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 254 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 06:51:24,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2022-11-19 06:51:24,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1719. [2022-11-19 06:51:24,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.3777648428405123) internal successors, (2367), 1718 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2367 transitions. [2022-11-19 06:51:24,473 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2367 transitions. Word has length 163 [2022-11-19 06:51:24,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:24,473 INFO L495 AbstractCegarLoop]: Abstraction has 1719 states and 2367 transitions. [2022-11-19 06:51:24,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:24,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2367 transitions. [2022-11-19 06:51:24,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-19 06:51:24,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:24,478 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:24,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:51:24,479 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:24,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:24,479 INFO L85 PathProgramCache]: Analyzing trace with hash -520473239, now seen corresponding path program 1 times [2022-11-19 06:51:24,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:24,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481521702] [2022-11-19 06:51:24,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:24,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:51:24,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:24,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481521702] [2022-11-19 06:51:24,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481521702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:24,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:24,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:51:24,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325259872] [2022-11-19 06:51:24,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:24,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:24,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:24,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:24,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:24,938 INFO L87 Difference]: Start difference. First operand 1719 states and 2367 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:25,843 INFO L93 Difference]: Finished difference Result 4295 states and 5889 transitions. [2022-11-19 06:51:25,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:25,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 171 [2022-11-19 06:51:25,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:25,852 INFO L225 Difference]: With dead ends: 4295 [2022-11-19 06:51:25,853 INFO L226 Difference]: Without dead ends: 2577 [2022-11-19 06:51:25,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:25,866 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 132 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:25,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 261 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 06:51:25,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2577 states. [2022-11-19 06:51:25,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2577 to 2577. [2022-11-19 06:51:25,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2576 states have (on average 1.3156055900621118) internal successors, (3389), 2576 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:25,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 3389 transitions. [2022-11-19 06:51:25,930 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 3389 transitions. Word has length 171 [2022-11-19 06:51:25,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:25,933 INFO L495 AbstractCegarLoop]: Abstraction has 2577 states and 3389 transitions. [2022-11-19 06:51:25,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:25,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 3389 transitions. [2022-11-19 06:51:25,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-19 06:51:25,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:25,944 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:25,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:51:25,945 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:25,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:25,945 INFO L85 PathProgramCache]: Analyzing trace with hash 610404892, now seen corresponding path program 1 times [2022-11-19 06:51:25,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:25,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193780024] [2022-11-19 06:51:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:25,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 06:51:26,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:26,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193780024] [2022-11-19 06:51:26,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193780024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:26,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:26,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:51:26,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482173747] [2022-11-19 06:51:26,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:26,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:26,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:26,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:26,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:26,155 INFO L87 Difference]: Start difference. First operand 2577 states and 3389 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:26,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:26,629 INFO L93 Difference]: Finished difference Result 5153 states and 6777 transitions. [2022-11-19 06:51:26,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:26,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 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 176 [2022-11-19 06:51:26,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:26,638 INFO L225 Difference]: With dead ends: 5153 [2022-11-19 06:51:26,638 INFO L226 Difference]: Without dead ends: 2577 [2022-11-19 06:51:26,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:26,642 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 240 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:26,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 4 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:51:26,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2577 states. [2022-11-19 06:51:26,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2577 to 2577. [2022-11-19 06:51:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2576 states have (on average 1.281444099378882) internal successors, (3301), 2576 states have internal predecessors, (3301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:26,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 3301 transitions. [2022-11-19 06:51:26,751 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 3301 transitions. Word has length 176 [2022-11-19 06:51:26,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:26,752 INFO L495 AbstractCegarLoop]: Abstraction has 2577 states and 3301 transitions. [2022-11-19 06:51:26,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:26,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 3301 transitions. [2022-11-19 06:51:26,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-19 06:51:26,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:26,760 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:26,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:51:26,760 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:26,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:26,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1441036603, now seen corresponding path program 1 times [2022-11-19 06:51:26,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:26,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933340481] [2022-11-19 06:51:26,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:26,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:51:27,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:27,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933340481] [2022-11-19 06:51:27,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933340481] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:51:27,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202250798] [2022-11-19 06:51:27,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:27,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:51:27,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:51:27,218 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:51:27,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:51:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:27,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:51:27,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:51:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:51:27,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:51:27,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202250798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:27,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:51:27,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-19 06:51:27,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012553246] [2022-11-19 06:51:27,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:27,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:27,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:27,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:27,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:51:27,714 INFO L87 Difference]: Start difference. First operand 2577 states and 3301 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:28,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:28,555 INFO L93 Difference]: Finished difference Result 6297 states and 8152 transitions. [2022-11-19 06:51:28,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:28,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 181 [2022-11-19 06:51:28,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:28,572 INFO L225 Difference]: With dead ends: 6297 [2022-11-19 06:51:28,572 INFO L226 Difference]: Without dead ends: 3721 [2022-11-19 06:51:28,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:51:28,576 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 29 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:28,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 218 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 06:51:28,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3721 states. [2022-11-19 06:51:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3721 to 3721. [2022-11-19 06:51:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 3720 states have (on average 1.2596774193548388) internal successors, (4686), 3720 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 4686 transitions. [2022-11-19 06:51:28,668 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 4686 transitions. Word has length 181 [2022-11-19 06:51:28,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:28,669 INFO L495 AbstractCegarLoop]: Abstraction has 3721 states and 4686 transitions. [2022-11-19 06:51:28,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:28,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 4686 transitions. [2022-11-19 06:51:28,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-19 06:51:28,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:28,677 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:28,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:51:28,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:51:28,884 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:28,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:28,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1370561676, now seen corresponding path program 1 times [2022-11-19 06:51:28,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:28,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977273809] [2022-11-19 06:51:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:28,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:29,306 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 06:51:29,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:29,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977273809] [2022-11-19 06:51:29,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977273809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:29,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:29,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:51:29,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652866343] [2022-11-19 06:51:29,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:29,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:51:29,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:29,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:51:29,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:51:29,313 INFO L87 Difference]: Start difference. First operand 3721 states and 4686 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:30,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:30,345 INFO L93 Difference]: Finished difference Result 10444 states and 13269 transitions. [2022-11-19 06:51:30,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:51:30,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 213 [2022-11-19 06:51:30,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:30,368 INFO L225 Difference]: With dead ends: 10444 [2022-11-19 06:51:30,368 INFO L226 Difference]: Without dead ends: 6724 [2022-11-19 06:51:30,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:51:30,373 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 396 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:30,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 11 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 06:51:30,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6724 states. [2022-11-19 06:51:30,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6724 to 6581. [2022-11-19 06:51:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6581 states, 6580 states have (on average 1.214741641337386) internal successors, (7993), 6580 states have internal predecessors, (7993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:30,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6581 states to 6581 states and 7993 transitions. [2022-11-19 06:51:30,539 INFO L78 Accepts]: Start accepts. Automaton has 6581 states and 7993 transitions. Word has length 213 [2022-11-19 06:51:30,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:30,540 INFO L495 AbstractCegarLoop]: Abstraction has 6581 states and 7993 transitions. [2022-11-19 06:51:30,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:30,540 INFO L276 IsEmpty]: Start isEmpty. Operand 6581 states and 7993 transitions. [2022-11-19 06:51:30,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-19 06:51:30,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:30,552 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:30,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 06:51:30,552 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:30,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:30,553 INFO L85 PathProgramCache]: Analyzing trace with hash -441778339, now seen corresponding path program 1 times [2022-11-19 06:51:30,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:30,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695943258] [2022-11-19 06:51:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:30,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:51:31,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:31,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695943258] [2022-11-19 06:51:31,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695943258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:31,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:31,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:51:31,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272843282] [2022-11-19 06:51:31,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:31,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:31,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:31,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:31,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:31,075 INFO L87 Difference]: Start difference. First operand 6581 states and 7993 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:32,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:32,047 INFO L93 Difference]: Finished difference Result 15878 states and 19367 transitions. [2022-11-19 06:51:32,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:32,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 236 [2022-11-19 06:51:32,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:32,096 INFO L225 Difference]: With dead ends: 15878 [2022-11-19 06:51:32,097 INFO L226 Difference]: Without dead ends: 9298 [2022-11-19 06:51:32,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:32,105 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 68 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:32,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 238 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 06:51:32,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9298 states. [2022-11-19 06:51:32,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9298 to 9012. [2022-11-19 06:51:32,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9012 states, 9011 states have (on average 1.199311952058595) internal successors, (10807), 9011 states have internal predecessors, (10807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:32,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9012 states to 9012 states and 10807 transitions. [2022-11-19 06:51:32,311 INFO L78 Accepts]: Start accepts. Automaton has 9012 states and 10807 transitions. Word has length 236 [2022-11-19 06:51:32,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:32,312 INFO L495 AbstractCegarLoop]: Abstraction has 9012 states and 10807 transitions. [2022-11-19 06:51:32,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:32,313 INFO L276 IsEmpty]: Start isEmpty. Operand 9012 states and 10807 transitions. [2022-11-19 06:51:32,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-19 06:51:32,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:32,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:32,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 06:51:32,328 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:32,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:32,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1282081121, now seen corresponding path program 1 times [2022-11-19 06:51:32,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:32,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094727768] [2022-11-19 06:51:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:32,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-19 06:51:32,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:32,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094727768] [2022-11-19 06:51:32,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094727768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:32,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:32,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:51:32,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938299536] [2022-11-19 06:51:32,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:32,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:32,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:32,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:32,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:32,864 INFO L87 Difference]: Start difference. First operand 9012 states and 10807 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:33,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:33,830 INFO L93 Difference]: Finished difference Result 21312 states and 25427 transitions. [2022-11-19 06:51:33,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:33,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 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 249 [2022-11-19 06:51:33,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:33,859 INFO L225 Difference]: With dead ends: 21312 [2022-11-19 06:51:33,859 INFO L226 Difference]: Without dead ends: 12301 [2022-11-19 06:51:33,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:33,870 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 133 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:33,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 88 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 06:51:33,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12301 states. [2022-11-19 06:51:34,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12301 to 12301. [2022-11-19 06:51:34,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12301 states, 12300 states have (on average 1.179349593495935) internal successors, (14506), 12300 states have internal predecessors, (14506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:34,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12301 states to 12301 states and 14506 transitions. [2022-11-19 06:51:34,120 INFO L78 Accepts]: Start accepts. Automaton has 12301 states and 14506 transitions. Word has length 249 [2022-11-19 06:51:34,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:34,121 INFO L495 AbstractCegarLoop]: Abstraction has 12301 states and 14506 transitions. [2022-11-19 06:51:34,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:34,122 INFO L276 IsEmpty]: Start isEmpty. Operand 12301 states and 14506 transitions. [2022-11-19 06:51:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-19 06:51:34,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:34,140 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:34,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 06:51:34,141 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:34,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:34,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1733561926, now seen corresponding path program 1 times [2022-11-19 06:51:34,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:34,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12467432] [2022-11-19 06:51:34,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:34,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-19 06:51:34,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:34,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12467432] [2022-11-19 06:51:34,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12467432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:34,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:34,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:51:34,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285523121] [2022-11-19 06:51:34,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:34,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:34,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:34,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:34,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:34,720 INFO L87 Difference]: Start difference. First operand 12301 states and 14506 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:35,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:35,682 INFO L93 Difference]: Finished difference Result 27606 states and 32488 transitions. [2022-11-19 06:51:35,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:35,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 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 251 [2022-11-19 06:51:35,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:35,763 INFO L225 Difference]: With dead ends: 27606 [2022-11-19 06:51:35,763 INFO L226 Difference]: Without dead ends: 15592 [2022-11-19 06:51:35,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:35,773 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 130 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:35,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 115 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 06:51:35,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15592 states. [2022-11-19 06:51:36,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15592 to 15304. [2022-11-19 06:51:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15304 states, 15303 states have (on average 1.1757825263020323) internal successors, (17993), 15303 states have internal predecessors, (17993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15304 states to 15304 states and 17993 transitions. [2022-11-19 06:51:36,129 INFO L78 Accepts]: Start accepts. Automaton has 15304 states and 17993 transitions. Word has length 251 [2022-11-19 06:51:36,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:36,129 INFO L495 AbstractCegarLoop]: Abstraction has 15304 states and 17993 transitions. [2022-11-19 06:51:36,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:36,130 INFO L276 IsEmpty]: Start isEmpty. Operand 15304 states and 17993 transitions. [2022-11-19 06:51:36,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-19 06:51:36,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:36,151 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:36,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 06:51:36,151 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:36,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:36,152 INFO L85 PathProgramCache]: Analyzing trace with hash 825161667, now seen corresponding path program 1 times [2022-11-19 06:51:36,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:36,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272160901] [2022-11-19 06:51:36,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:36,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:36,904 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-19 06:51:36,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:36,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272160901] [2022-11-19 06:51:36,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272160901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:36,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:36,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:51:36,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327333714] [2022-11-19 06:51:36,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:36,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:36,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:36,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:36,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:36,908 INFO L87 Difference]: Start difference. First operand 15304 states and 17993 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:37,798 INFO L93 Difference]: Finished difference Result 34611 states and 40790 transitions. [2022-11-19 06:51:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:37,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 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 262 [2022-11-19 06:51:37,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:37,833 INFO L225 Difference]: With dead ends: 34611 [2022-11-19 06:51:37,834 INFO L226 Difference]: Without dead ends: 19880 [2022-11-19 06:51:37,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:37,848 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 94 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:37,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 71 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 06:51:37,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19880 states. [2022-11-19 06:51:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19880 to 19737. [2022-11-19 06:51:38,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19737 states, 19736 states have (on average 1.1651803810295907) internal successors, (22996), 19736 states have internal predecessors, (22996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:38,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19737 states to 19737 states and 22996 transitions. [2022-11-19 06:51:38,223 INFO L78 Accepts]: Start accepts. Automaton has 19737 states and 22996 transitions. Word has length 262 [2022-11-19 06:51:38,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:38,224 INFO L495 AbstractCegarLoop]: Abstraction has 19737 states and 22996 transitions. [2022-11-19 06:51:38,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:38,224 INFO L276 IsEmpty]: Start isEmpty. Operand 19737 states and 22996 transitions. [2022-11-19 06:51:38,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-19 06:51:38,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:38,252 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:38,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 06:51:38,252 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:38,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:38,253 INFO L85 PathProgramCache]: Analyzing trace with hash -301341794, now seen corresponding path program 2 times [2022-11-19 06:51:38,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:38,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029215034] [2022-11-19 06:51:38,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:38,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 137 proven. 6 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-19 06:51:39,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:39,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029215034] [2022-11-19 06:51:39,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029215034] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:51:39,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825084514] [2022-11-19 06:51:39,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:51:39,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:51:39,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:51:39,106 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:51:39,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:51:39,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-19 06:51:39,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:51:39,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:51:39,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:51:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-11-19 06:51:39,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:51:39,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825084514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:39,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:51:39,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-19 06:51:39,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912771946] [2022-11-19 06:51:39,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:39,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:39,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:39,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:39,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:51:39,791 INFO L87 Difference]: Start difference. First operand 19737 states and 22996 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:40,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:40,873 INFO L93 Difference]: Finished difference Result 39902 states and 46966 transitions. [2022-11-19 06:51:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:40,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 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 269 [2022-11-19 06:51:40,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:40,922 INFO L225 Difference]: With dead ends: 39902 [2022-11-19 06:51:40,922 INFO L226 Difference]: Without dead ends: 21453 [2022-11-19 06:51:40,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:51:40,938 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 42 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:40,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 20 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 06:51:40,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21453 states. [2022-11-19 06:51:41,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21453 to 21453. [2022-11-19 06:51:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21453 states, 21452 states have (on average 1.1818478463546522) internal successors, (25353), 21452 states have internal predecessors, (25353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21453 states to 21453 states and 25353 transitions. [2022-11-19 06:51:41,447 INFO L78 Accepts]: Start accepts. Automaton has 21453 states and 25353 transitions. Word has length 269 [2022-11-19 06:51:41,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:41,448 INFO L495 AbstractCegarLoop]: Abstraction has 21453 states and 25353 transitions. [2022-11-19 06:51:41,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:41,449 INFO L276 IsEmpty]: Start isEmpty. Operand 21453 states and 25353 transitions. [2022-11-19 06:51:41,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-11-19 06:51:41,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:41,484 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:41,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:51:41,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 06:51:41,691 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:41,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:41,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1853989418, now seen corresponding path program 1 times [2022-11-19 06:51:41,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:41,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395256130] [2022-11-19 06:51:41,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:41,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-19 06:51:42,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:42,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395256130] [2022-11-19 06:51:42,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395256130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:42,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:42,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:51:42,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247578392] [2022-11-19 06:51:42,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:42,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:42,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:42,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:42,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:42,388 INFO L87 Difference]: Start difference. First operand 21453 states and 25353 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:43,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:43,199 INFO L93 Difference]: Finished difference Result 42190 states and 49919 transitions. [2022-11-19 06:51:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:43,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 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 283 [2022-11-19 06:51:43,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:43,241 INFO L225 Difference]: With dead ends: 42190 [2022-11-19 06:51:43,241 INFO L226 Difference]: Without dead ends: 21882 [2022-11-19 06:51:43,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:43,254 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 113 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:43,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 102 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 06:51:43,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21882 states. [2022-11-19 06:51:43,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21882 to 21882. [2022-11-19 06:51:43,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21882 states, 21881 states have (on average 1.180933229742699) internal successors, (25840), 21881 states have internal predecessors, (25840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21882 states to 21882 states and 25840 transitions. [2022-11-19 06:51:43,600 INFO L78 Accepts]: Start accepts. Automaton has 21882 states and 25840 transitions. Word has length 283 [2022-11-19 06:51:43,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:43,601 INFO L495 AbstractCegarLoop]: Abstraction has 21882 states and 25840 transitions. [2022-11-19 06:51:43,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:43,601 INFO L276 IsEmpty]: Start isEmpty. Operand 21882 states and 25840 transitions. [2022-11-19 06:51:43,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-11-19 06:51:43,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:43,623 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:43,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 06:51:43,623 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:43,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:43,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1619391301, now seen corresponding path program 1 times [2022-11-19 06:51:43,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:43,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179203507] [2022-11-19 06:51:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:43,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-19 06:51:44,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:44,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179203507] [2022-11-19 06:51:44,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179203507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:44,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:44,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:51:44,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815045521] [2022-11-19 06:51:44,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:44,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:44,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:44,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:44,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:44,465 INFO L87 Difference]: Start difference. First operand 21882 states and 25840 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:45,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:45,210 INFO L93 Difference]: Finished difference Result 42047 states and 49757 transitions. [2022-11-19 06:51:45,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:45,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 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 295 [2022-11-19 06:51:45,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:45,246 INFO L225 Difference]: With dead ends: 42047 [2022-11-19 06:51:45,246 INFO L226 Difference]: Without dead ends: 21882 [2022-11-19 06:51:45,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:45,258 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:45,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 103 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 06:51:45,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21882 states. [2022-11-19 06:51:45,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21882 to 21882. [2022-11-19 06:51:45,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21882 states, 21881 states have (on average 1.1807961244915681) internal successors, (25837), 21881 states have internal predecessors, (25837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21882 states to 21882 states and 25837 transitions. [2022-11-19 06:51:45,663 INFO L78 Accepts]: Start accepts. Automaton has 21882 states and 25837 transitions. Word has length 295 [2022-11-19 06:51:45,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:45,664 INFO L495 AbstractCegarLoop]: Abstraction has 21882 states and 25837 transitions. [2022-11-19 06:51:45,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:45,664 INFO L276 IsEmpty]: Start isEmpty. Operand 21882 states and 25837 transitions. [2022-11-19 06:51:45,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-19 06:51:45,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:45,681 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:45,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 06:51:45,681 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:45,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:45,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1434596184, now seen corresponding path program 1 times [2022-11-19 06:51:45,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:45,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565147537] [2022-11-19 06:51:45,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:45,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-19 06:51:46,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:46,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565147537] [2022-11-19 06:51:46,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565147537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:46,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:46,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:51:46,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475614062] [2022-11-19 06:51:46,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:46,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:46,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:46,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:46,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:46,127 INFO L87 Difference]: Start difference. First operand 21882 states and 25837 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:47,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:47,017 INFO L93 Difference]: Finished difference Result 48198 states and 57116 transitions. [2022-11-19 06:51:47,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:47,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 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 296 [2022-11-19 06:51:47,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:47,058 INFO L225 Difference]: With dead ends: 48198 [2022-11-19 06:51:47,059 INFO L226 Difference]: Without dead ends: 27747 [2022-11-19 06:51:47,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:47,073 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 86 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:47,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 106 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 06:51:47,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27747 states. [2022-11-19 06:51:47,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27747 to 25314. [2022-11-19 06:51:47,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25314 states, 25313 states have (on average 1.1895073677556987) internal successors, (30110), 25313 states have internal predecessors, (30110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:47,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25314 states to 25314 states and 30110 transitions. [2022-11-19 06:51:47,682 INFO L78 Accepts]: Start accepts. Automaton has 25314 states and 30110 transitions. Word has length 296 [2022-11-19 06:51:47,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:47,682 INFO L495 AbstractCegarLoop]: Abstraction has 25314 states and 30110 transitions. [2022-11-19 06:51:47,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:47,683 INFO L276 IsEmpty]: Start isEmpty. Operand 25314 states and 30110 transitions. [2022-11-19 06:51:47,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-19 06:51:47,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:47,707 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:47,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-19 06:51:47,708 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:47,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:47,708 INFO L85 PathProgramCache]: Analyzing trace with hash 658723214, now seen corresponding path program 1 times [2022-11-19 06:51:47,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:47,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141503959] [2022-11-19 06:51:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:47,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:51:48,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:48,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141503959] [2022-11-19 06:51:48,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141503959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:48,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:48,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:51:48,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474995019] [2022-11-19 06:51:48,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:48,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:51:48,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:48,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:51:48,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:51:48,327 INFO L87 Difference]: Start difference. First operand 25314 states and 30110 transitions. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:49,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:49,660 INFO L93 Difference]: Finished difference Result 50627 states and 60372 transitions. [2022-11-19 06:51:49,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:51:49,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 317 [2022-11-19 06:51:49,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:49,703 INFO L225 Difference]: With dead ends: 50627 [2022-11-19 06:51:49,703 INFO L226 Difference]: Without dead ends: 27030 [2022-11-19 06:51:49,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:51:49,718 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 140 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:49,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 58 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 06:51:49,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27030 states. [2022-11-19 06:51:50,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27030 to 25600. [2022-11-19 06:51:50,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25600 states, 25599 states have (on average 1.1916090472284073) internal successors, (30504), 25599 states have internal predecessors, (30504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25600 states to 25600 states and 30504 transitions. [2022-11-19 06:51:50,244 INFO L78 Accepts]: Start accepts. Automaton has 25600 states and 30504 transitions. Word has length 317 [2022-11-19 06:51:50,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:50,244 INFO L495 AbstractCegarLoop]: Abstraction has 25600 states and 30504 transitions. [2022-11-19 06:51:50,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:50,244 INFO L276 IsEmpty]: Start isEmpty. Operand 25600 states and 30504 transitions. [2022-11-19 06:51:50,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-11-19 06:51:50,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:50,262 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:50,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-19 06:51:50,262 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:50,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:50,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1444703703, now seen corresponding path program 1 times [2022-11-19 06:51:50,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:50,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340829632] [2022-11-19 06:51:50,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:50,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 191 proven. 6 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-19 06:51:51,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:51,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340829632] [2022-11-19 06:51:51,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340829632] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:51:51,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20542367] [2022-11-19 06:51:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:51,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:51:51,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:51:51,006 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:51:51,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:51:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:51,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:51:51,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:51:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-19 06:51:51,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:51:51,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20542367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:51,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:51:51,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-19 06:51:51,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132557941] [2022-11-19 06:51:51,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:51,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:51,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:51,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:51,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:51:51,457 INFO L87 Difference]: Start difference. First operand 25600 states and 30504 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:52,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:52,357 INFO L93 Difference]: Finished difference Result 52915 states and 63779 transitions. [2022-11-19 06:51:52,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:52,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 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 323 [2022-11-19 06:51:52,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:52,385 INFO L225 Difference]: With dead ends: 52915 [2022-11-19 06:51:52,386 INFO L226 Difference]: Without dead ends: 29032 [2022-11-19 06:51:52,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:51:52,401 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 91 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:52,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 86 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 06:51:52,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29032 states. [2022-11-19 06:51:52,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29032 to 28460. [2022-11-19 06:51:52,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28460 states, 28459 states have (on average 1.1749534417934573) internal successors, (33438), 28459 states have internal predecessors, (33438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28460 states to 28460 states and 33438 transitions. [2022-11-19 06:51:52,843 INFO L78 Accepts]: Start accepts. Automaton has 28460 states and 33438 transitions. Word has length 323 [2022-11-19 06:51:52,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:52,844 INFO L495 AbstractCegarLoop]: Abstraction has 28460 states and 33438 transitions. [2022-11-19 06:51:52,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:52,844 INFO L276 IsEmpty]: Start isEmpty. Operand 28460 states and 33438 transitions. [2022-11-19 06:51:52,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-11-19 06:51:52,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:52,859 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:52,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:51:53,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-19 06:51:53,060 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:53,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:53,061 INFO L85 PathProgramCache]: Analyzing trace with hash -506750244, now seen corresponding path program 1 times [2022-11-19 06:51:53,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:53,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046780579] [2022-11-19 06:51:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:53,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:53,639 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 185 proven. 6 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-11-19 06:51:53,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:53,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046780579] [2022-11-19 06:51:53,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046780579] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:51:53,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108815028] [2022-11-19 06:51:53,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:53,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:51:53,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:51:53,644 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:51:53,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:51:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:53,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:51:53,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:51:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-19 06:51:54,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:51:54,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108815028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:54,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:51:54,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-19 06:51:54,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930969638] [2022-11-19 06:51:54,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:54,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:54,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:54,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:54,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:51:54,133 INFO L87 Difference]: Start difference. First operand 28460 states and 33438 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:55,167 INFO L93 Difference]: Finished difference Result 59493 states and 69997 transitions. [2022-11-19 06:51:55,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:55,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 332 [2022-11-19 06:51:55,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:55,210 INFO L225 Difference]: With dead ends: 59493 [2022-11-19 06:51:55,211 INFO L226 Difference]: Without dead ends: 32607 [2022-11-19 06:51:55,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:51:55,230 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 12 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:55,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 128 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 06:51:55,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32607 states. [2022-11-19 06:51:55,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32607 to 27888. [2022-11-19 06:51:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27888 states, 27887 states have (on average 1.173342417613942) internal successors, (32721), 27887 states have internal predecessors, (32721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:55,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27888 states to 27888 states and 32721 transitions. [2022-11-19 06:51:55,697 INFO L78 Accepts]: Start accepts. Automaton has 27888 states and 32721 transitions. Word has length 332 [2022-11-19 06:51:55,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:55,698 INFO L495 AbstractCegarLoop]: Abstraction has 27888 states and 32721 transitions. [2022-11-19 06:51:55,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:55,698 INFO L276 IsEmpty]: Start isEmpty. Operand 27888 states and 32721 transitions. [2022-11-19 06:51:55,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-11-19 06:51:55,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:55,720 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:55,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-19 06:51:55,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:51:55,921 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:55,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:55,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1397345862, now seen corresponding path program 1 times [2022-11-19 06:51:55,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:55,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38109613] [2022-11-19 06:51:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:55,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 138 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-19 06:51:56,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:56,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38109613] [2022-11-19 06:51:56,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38109613] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:51:56,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118235067] [2022-11-19 06:51:56,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:56,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:51:56,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:51:56,977 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:51:56,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 06:51:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:57,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:51:57,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:51:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-19 06:51:57,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:51:57,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118235067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:57,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:51:57,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-19 06:51:57,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645148827] [2022-11-19 06:51:57,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:57,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:57,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:57,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:57,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:51:57,621 INFO L87 Difference]: Start difference. First operand 27888 states and 32721 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:58,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:58,485 INFO L93 Difference]: Finished difference Result 56633 states and 66523 transitions. [2022-11-19 06:51:58,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:58,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 337 [2022-11-19 06:51:58,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:58,524 INFO L225 Difference]: With dead ends: 56633 [2022-11-19 06:51:58,525 INFO L226 Difference]: Without dead ends: 30176 [2022-11-19 06:51:58,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:51:58,540 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 82 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:58,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 109 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 06:51:58,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30176 states. [2022-11-19 06:51:58,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30176 to 29461. [2022-11-19 06:51:58,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29461 states, 29460 states have (on average 1.170162932790224) internal successors, (34473), 29460 states have internal predecessors, (34473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29461 states to 29461 states and 34473 transitions. [2022-11-19 06:51:58,887 INFO L78 Accepts]: Start accepts. Automaton has 29461 states and 34473 transitions. Word has length 337 [2022-11-19 06:51:58,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:58,887 INFO L495 AbstractCegarLoop]: Abstraction has 29461 states and 34473 transitions. [2022-11-19 06:51:58,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:58,887 INFO L276 IsEmpty]: Start isEmpty. Operand 29461 states and 34473 transitions. [2022-11-19 06:51:58,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-19 06:51:58,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:58,902 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:58,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:51:59,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:51:59,103 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:59,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:59,103 INFO L85 PathProgramCache]: Analyzing trace with hash 997351239, now seen corresponding path program 1 times [2022-11-19 06:51:59,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:59,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722674753] [2022-11-19 06:51:59,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:59,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-19 06:51:59,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:59,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722674753] [2022-11-19 06:51:59,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722674753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:59,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:59,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:51:59,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166499677] [2022-11-19 06:51:59,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:59,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:59,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:59,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:59,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:59,802 INFO L87 Difference]: Start difference. First operand 29461 states and 34473 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:00,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:00,558 INFO L93 Difference]: Finished difference Result 57777 states and 67641 transitions. [2022-11-19 06:52:00,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:52:00,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 345 [2022-11-19 06:52:00,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:00,585 INFO L225 Difference]: With dead ends: 57777 [2022-11-19 06:52:00,585 INFO L226 Difference]: Without dead ends: 29604 [2022-11-19 06:52:00,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:00,598 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 81 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:00,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 261 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 06:52:00,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29604 states. [2022-11-19 06:52:00,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29604 to 28746. [2022-11-19 06:52:00,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28746 states, 28745 states have (on average 1.1338319707775266) internal successors, (32592), 28745 states have internal predecessors, (32592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:00,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28746 states to 28746 states and 32592 transitions. [2022-11-19 06:52:00,913 INFO L78 Accepts]: Start accepts. Automaton has 28746 states and 32592 transitions. Word has length 345 [2022-11-19 06:52:00,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:00,913 INFO L495 AbstractCegarLoop]: Abstraction has 28746 states and 32592 transitions. [2022-11-19 06:52:00,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:00,913 INFO L276 IsEmpty]: Start isEmpty. Operand 28746 states and 32592 transitions. [2022-11-19 06:52:00,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-11-19 06:52:00,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:00,929 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:00,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-19 06:52:00,929 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:00,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:00,930 INFO L85 PathProgramCache]: Analyzing trace with hash -254283576, now seen corresponding path program 1 times [2022-11-19 06:52:00,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:00,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026911868] [2022-11-19 06:52:00,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:00,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-19 06:52:01,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:01,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026911868] [2022-11-19 06:52:01,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026911868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:01,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:01,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:52:01,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832582691] [2022-11-19 06:52:01,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:01,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:52:01,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:01,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:52:01,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:01,383 INFO L87 Difference]: Start difference. First operand 28746 states and 32592 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:02,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:02,473 INFO L93 Difference]: Finished difference Result 56347 states and 63943 transitions. [2022-11-19 06:52:02,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:52:02,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 382 [2022-11-19 06:52:02,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:02,500 INFO L225 Difference]: With dead ends: 56347 [2022-11-19 06:52:02,500 INFO L226 Difference]: Without dead ends: 29318 [2022-11-19 06:52:02,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:02,513 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 214 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:02,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 69 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 06:52:02,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29318 states. [2022-11-19 06:52:02,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29318 to 28460. [2022-11-19 06:52:02,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28460 states, 28459 states have (on average 1.1324712744650198) internal successors, (32229), 28459 states have internal predecessors, (32229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:02,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28460 states to 28460 states and 32229 transitions. [2022-11-19 06:52:02,893 INFO L78 Accepts]: Start accepts. Automaton has 28460 states and 32229 transitions. Word has length 382 [2022-11-19 06:52:02,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:02,893 INFO L495 AbstractCegarLoop]: Abstraction has 28460 states and 32229 transitions. [2022-11-19 06:52:02,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:02,894 INFO L276 IsEmpty]: Start isEmpty. Operand 28460 states and 32229 transitions. [2022-11-19 06:52:02,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-11-19 06:52:02,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:02,910 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:02,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-19 06:52:02,910 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:02,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:02,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2005583965, now seen corresponding path program 1 times [2022-11-19 06:52:02,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:02,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278633984] [2022-11-19 06:52:02,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:02,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 147 proven. 6 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2022-11-19 06:52:03,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:03,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278633984] [2022-11-19 06:52:03,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278633984] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:03,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164602908] [2022-11-19 06:52:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:03,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:03,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:03,433 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:03,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 06:52:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:03,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:52:03,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-19 06:52:04,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:04,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164602908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:04,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:52:04,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-19 06:52:04,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897306163] [2022-11-19 06:52:04,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:04,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:52:04,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:04,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:52:04,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:52:04,931 INFO L87 Difference]: Start difference. First operand 28460 states and 32229 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:05,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:05,815 INFO L93 Difference]: Finished difference Result 58347 states and 66238 transitions. [2022-11-19 06:52:05,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:52:05,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 389 [2022-11-19 06:52:05,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:05,816 INFO L225 Difference]: With dead ends: 58347 [2022-11-19 06:52:05,817 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 06:52:05,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:52:05,829 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:05,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 77 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 06:52:05,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 06:52:05,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 06:52:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 06:52:05,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 389 [2022-11-19 06:52:05,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:05,830 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 06:52:05,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 06:52:05,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 06:52:05,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:52:05,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-19 06:52:06,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:06,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 06:52:19,766 INFO L899 garLoopResultBuilder]: For program point L498(lines 498 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,766 INFO L899 garLoopResultBuilder]: For program point L432(lines 432 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,766 INFO L899 garLoopResultBuilder]: For program point L366(lines 366 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,766 INFO L899 garLoopResultBuilder]: For program point L763(lines 763 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,766 INFO L899 garLoopResultBuilder]: For program point L632(lines 632 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,766 INFO L899 garLoopResultBuilder]: For program point L566(lines 566 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,766 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,767 INFO L899 garLoopResultBuilder]: For program point L1293(lines 1293 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,767 INFO L899 garLoopResultBuilder]: For program point L1360(lines 1360 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,767 INFO L899 garLoopResultBuilder]: For program point L1162(lines 1162 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,767 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,767 INFO L899 garLoopResultBuilder]: For program point L1096(lines 1096 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,767 INFO L899 garLoopResultBuilder]: For program point L1031(lines 1031 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,767 INFO L899 garLoopResultBuilder]: For program point L965(lines 965 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,767 INFO L899 garLoopResultBuilder]: For program point L899(lines 899 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,767 INFO L899 garLoopResultBuilder]: For program point L174(lines 174 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,767 INFO L899 garLoopResultBuilder]: For program point L835(lines 835 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,767 INFO L899 garLoopResultBuilder]: For program point L771(lines 771 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,768 INFO L899 garLoopResultBuilder]: For program point L507(lines 507 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,768 INFO L899 garLoopResultBuilder]: For program point L243(lines 243 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,768 INFO L899 garLoopResultBuilder]: For program point L1433(lines 1433 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,768 INFO L899 garLoopResultBuilder]: For program point L376(lines 376 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,768 INFO L899 garLoopResultBuilder]: For program point L311(lines 311 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,768 INFO L899 garLoopResultBuilder]: For program point L1236(lines 1236 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,768 INFO L899 garLoopResultBuilder]: For program point L576(lines 576 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,768 INFO L899 garLoopResultBuilder]: For program point L444(lines 444 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,768 INFO L899 garLoopResultBuilder]: For program point L1369(lines 1369 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,768 INFO L899 garLoopResultBuilder]: For program point L1105(lines 1105 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,768 INFO L899 garLoopResultBuilder]: For program point L643(lines 643 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,768 INFO L899 garLoopResultBuilder]: For program point L1172(lines 1172 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,769 INFO L899 garLoopResultBuilder]: For program point L115(lines 115 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,769 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,769 INFO L899 garLoopResultBuilder]: For program point L182(lines 182 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,769 INFO L899 garLoopResultBuilder]: For program point L1041(lines 1041 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,769 INFO L899 garLoopResultBuilder]: For program point L909(lines 909 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,769 INFO L899 garLoopResultBuilder]: For program point L711(lines 711 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,769 INFO L899 garLoopResultBuilder]: For program point L976(lines 976 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,769 INFO L899 garLoopResultBuilder]: For program point L779(lines 779 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,769 INFO L899 garLoopResultBuilder]: For program point L846(lines 846 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,769 INFO L899 garLoopResultBuilder]: For program point L451(lines 451 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,769 INFO L899 garLoopResultBuilder]: For program point L1442(lines 1442 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,769 INFO L899 garLoopResultBuilder]: For program point L584(lines 584 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,770 INFO L899 garLoopResultBuilder]: For program point L1575-1(lines 64 1660) no Hoare annotation was computed. [2022-11-19 06:52:19,770 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,770 INFO L899 garLoopResultBuilder]: For program point L1114(lines 1114 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,770 INFO L899 garLoopResultBuilder]: For program point L1048(lines 1048 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,770 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,770 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 06:52:19,770 INFO L899 garLoopResultBuilder]: For program point L1247(lines 1247 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,770 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,770 INFO L899 garLoopResultBuilder]: For program point L917(lines 917 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,770 INFO L899 garLoopResultBuilder]: For program point L719(lines 719 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,770 INFO L899 garLoopResultBuilder]: For program point L653(lines 653 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,771 INFO L899 garLoopResultBuilder]: For program point L1578-1(lines 64 1660) no Hoare annotation was computed. [2022-11-19 06:52:19,771 INFO L899 garLoopResultBuilder]: For program point L191(lines 191 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,771 INFO L899 garLoopResultBuilder]: For program point L1579(line 1579) no Hoare annotation was computed. [2022-11-19 06:52:19,771 INFO L899 garLoopResultBuilder]: For program point L1315(lines 1315 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,771 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,771 INFO L899 garLoopResultBuilder]: For program point L1183(lines 1183 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,771 INFO L899 garLoopResultBuilder]: For program point L985(lines 985 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,771 INFO L899 garLoopResultBuilder]: For program point L787(lines 787 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,771 INFO L899 garLoopResultBuilder]: For program point L523(lines 523 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,771 INFO L899 garLoopResultBuilder]: For program point L854(lines 854 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,771 INFO L899 garLoopResultBuilder]: For program point L460(lines 460 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,772 INFO L899 garLoopResultBuilder]: For program point L593(lines 593 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,772 INFO L899 garLoopResultBuilder]: For program point L1452(lines 1452 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,772 INFO L899 garLoopResultBuilder]: For program point L329(lines 329 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,772 INFO L899 garLoopResultBuilder]: For program point L1122(lines 1122 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,772 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,772 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1579) no Hoare annotation was computed. [2022-11-19 06:52:19,772 INFO L899 garLoopResultBuilder]: For program point L794(lines 794 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,772 INFO L899 garLoopResultBuilder]: For program point L1323(lines 1323 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,772 INFO L899 garLoopResultBuilder]: For program point L993(lines 993 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,772 INFO L899 garLoopResultBuilder]: For program point L927(lines 927 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,772 INFO L899 garLoopResultBuilder]: For program point L663(lines 663 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,773 INFO L899 garLoopResultBuilder]: For program point L267(lines 267 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,773 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,773 INFO L899 garLoopResultBuilder]: For program point L1192(lines 1192 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,773 INFO L899 garLoopResultBuilder]: For program point L532(lines 532 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,773 INFO L899 garLoopResultBuilder]: For program point L1391(lines 1391 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,773 INFO L899 garLoopResultBuilder]: For program point L1259(lines 1259 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,773 INFO L899 garLoopResultBuilder]: For program point L136(lines 136 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,773 INFO L899 garLoopResultBuilder]: For program point L863(lines 863 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,773 INFO L899 garLoopResultBuilder]: For program point L468(lines 468 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,773 INFO L899 garLoopResultBuilder]: For program point L1130(lines 1130 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,773 INFO L899 garLoopResultBuilder]: For program point L668(lines 668 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,774 INFO L895 garLoopResultBuilder]: At program point L1659(lines 64 1660) the Hoare annotation is: (let ((.cse1 (= ~a3~0 0)) (.cse0 (= ~a5~0 1))) (or (and .cse0 (= ~a6~0 0) (= ~a27~0 1)) (and (= ~a26~0 1) .cse0 (= ~a12~0 1) .cse1) (and .cse0 (<= 1 ~a3~0)) (and .cse0 (<= ~a26~0 0) .cse1) (and .cse0 (= ~a11~0 1)) (and .cse0 (= ~a6~0 1)))) [2022-11-19 06:52:19,774 INFO L899 garLoopResultBuilder]: For program point L602(lines 602 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,774 INFO L899 garLoopResultBuilder]: For program point L1462(lines 1462 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,774 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,775 INFO L899 garLoopResultBuilder]: For program point L1331(lines 1331 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,775 INFO L902 garLoopResultBuilder]: At program point L1662(lines 1662 1679) the Hoare annotation is: true [2022-11-19 06:52:19,775 INFO L899 garLoopResultBuilder]: For program point L539(lines 539 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,775 INFO L899 garLoopResultBuilder]: For program point L407(lines 407 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,775 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,775 INFO L899 garLoopResultBuilder]: For program point L1200(lines 1200 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,775 INFO L899 garLoopResultBuilder]: For program point L805(lines 805 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,775 INFO L899 garLoopResultBuilder]: For program point L145(lines 145 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,775 INFO L899 garLoopResultBuilder]: For program point L1004(lines 1004 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,775 INFO L899 garLoopResultBuilder]: For program point L1137(lines 1137 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,775 INFO L899 garLoopResultBuilder]: For program point L1071(lines 1071 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,775 INFO L899 garLoopResultBuilder]: For program point L873(lines 873 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,776 INFO L899 garLoopResultBuilder]: For program point L675(lines 675 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,776 INFO L899 garLoopResultBuilder]: For program point L477(lines 477 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,776 INFO L899 garLoopResultBuilder]: For program point L1336(lines 1336 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,776 INFO L899 garLoopResultBuilder]: For program point L743(lines 743 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,776 INFO L895 garLoopResultBuilder]: At program point L1668-2(lines 1668 1678) the Hoare annotation is: (let ((.cse1 (= ~a3~0 0)) (.cse0 (= ~a5~0 1))) (or (and .cse0 (= ~a6~0 0) (= ~a27~0 1)) (and (= ~a26~0 1) .cse0 (= ~a12~0 1) .cse1) (and .cse0 (<= 1 ~a3~0)) (and .cse0 (<= ~a26~0 0) .cse1) (and .cse0 (= ~a11~0 1)) (and .cse0 (= ~a6~0 1)))) [2022-11-19 06:52:19,776 INFO L899 garLoopResultBuilder]: For program point L1470(lines 1470 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,776 INFO L899 garLoopResultBuilder]: For program point L83(lines 83 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,776 INFO L899 garLoopResultBuilder]: For program point L613(lines 613 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,776 INFO L899 garLoopResultBuilder]: For program point L415(lines 415 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,777 INFO L899 garLoopResultBuilder]: For program point L349(lines 349 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,777 INFO L899 garLoopResultBuilder]: For program point L1142(lines 1142 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,777 INFO L899 garLoopResultBuilder]: For program point L1076(lines 1076 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,777 INFO L899 garLoopResultBuilder]: For program point L878(lines 878 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,777 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 06:52:19,777 INFO L899 garLoopResultBuilder]: For program point L549(lines 549 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,777 INFO L899 garLoopResultBuilder]: For program point L1210(lines 1210 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,777 INFO L899 garLoopResultBuilder]: For program point L814(lines 814 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,777 INFO L899 garLoopResultBuilder]: For program point L1673(line 1673) no Hoare annotation was computed. [2022-11-19 06:52:19,777 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,777 INFO L899 garLoopResultBuilder]: For program point L1013(lines 1013 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,777 INFO L899 garLoopResultBuilder]: For program point L947(lines 947 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,778 INFO L899 garLoopResultBuilder]: For program point L156(lines 156 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,778 INFO L899 garLoopResultBuilder]: For program point L685(lines 685 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,778 INFO L899 garLoopResultBuilder]: For program point L1412(lines 1412 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,778 INFO L899 garLoopResultBuilder]: For program point L1346(lines 1346 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,778 INFO L899 garLoopResultBuilder]: For program point L223(lines 223 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,780 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,780 INFO L899 garLoopResultBuilder]: For program point L753(lines 753 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,781 INFO L899 garLoopResultBuilder]: For program point L1084(lines 1084 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,781 INFO L899 garLoopResultBuilder]: For program point L556(lines 556 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,781 INFO L899 garLoopResultBuilder]: For program point L490(lines 490 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,781 INFO L899 garLoopResultBuilder]: For program point L424(lines 424 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,781 INFO L899 garLoopResultBuilder]: For program point L358(lines 358 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,781 INFO L899 garLoopResultBuilder]: For program point L1284(lines 1284 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,781 INFO L899 garLoopResultBuilder]: For program point L1152(lines 1152 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,782 INFO L899 garLoopResultBuilder]: For program point L624(lines 624 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,782 INFO L899 garLoopResultBuilder]: For program point L294(lines 294 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,782 INFO L899 garLoopResultBuilder]: For program point L1021(lines 1021 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,782 INFO L899 garLoopResultBuilder]: For program point L823(lines 823 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,782 INFO L899 garLoopResultBuilder]: For program point L1220(lines 1220 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,782 INFO L899 garLoopResultBuilder]: For program point L957(lines 957 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,782 INFO L899 garLoopResultBuilder]: For program point L1354(lines 1354 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,783 INFO L899 garLoopResultBuilder]: For program point L165(lines 165 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,783 INFO L899 garLoopResultBuilder]: For program point L99(lines 99 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,783 INFO L899 garLoopResultBuilder]: For program point L694(lines 694 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,783 INFO L899 garLoopResultBuilder]: For program point L232(lines 232 1475) no Hoare annotation was computed. [2022-11-19 06:52:19,786 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:19,788 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:52:19,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:52:19 BoogieIcfgContainer [2022-11-19 06:52:19,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:52:19,805 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:52:19,805 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:52:19,805 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:52:19,806 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:51:17" (3/4) ... [2022-11-19 06:52:19,809 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 06:52:19,837 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 125 nodes and edges [2022-11-19 06:52:19,839 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-19 06:52:19,842 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-19 06:52:19,845 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 06:52:20,006 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:52:20,007 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:52:20,007 INFO L158 Benchmark]: Toolchain (without parser) took 66323.48ms. Allocated memory was 88.1MB in the beginning and 3.3GB in the end (delta: 3.2GB). Free memory was 65.1MB in the beginning and 2.0GB in the end (delta: -2.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-19 06:52:20,007 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 88.1MB. Free memory is still 67.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:52:20,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1140.67ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 64.9MB in the beginning and 63.8MB in the end (delta: 1.1MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. [2022-11-19 06:52:20,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 146.22ms. Allocated memory is still 111.1MB. Free memory was 63.8MB in the beginning and 49.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 06:52:20,008 INFO L158 Benchmark]: Boogie Preprocessor took 182.99ms. Allocated memory is still 111.1MB. Free memory was 49.1MB in the beginning and 71.1MB in the end (delta: -22.0MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-11-19 06:52:20,009 INFO L158 Benchmark]: RCFGBuilder took 2702.80ms. Allocated memory was 111.1MB in the beginning and 153.1MB in the end (delta: 41.9MB). Free memory was 70.6MB in the beginning and 70.8MB in the end (delta: -148.6kB). Peak memory consumption was 73.1MB. Max. memory is 16.1GB. [2022-11-19 06:52:20,009 INFO L158 Benchmark]: TraceAbstraction took 61937.97ms. Allocated memory was 153.1MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 69.8MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2022-11-19 06:52:20,009 INFO L158 Benchmark]: Witness Printer took 201.80ms. Allocated memory is still 3.3GB. Free memory was 2.1GB in the beginning and 2.0GB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-19 06:52:20,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 88.1MB. Free memory is still 67.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1140.67ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 64.9MB in the beginning and 63.8MB in the end (delta: 1.1MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 146.22ms. Allocated memory is still 111.1MB. Free memory was 63.8MB in the beginning and 49.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 182.99ms. Allocated memory is still 111.1MB. Free memory was 49.1MB in the beginning and 71.1MB in the end (delta: -22.0MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * RCFGBuilder took 2702.80ms. Allocated memory was 111.1MB in the beginning and 153.1MB in the end (delta: 41.9MB). Free memory was 70.6MB in the beginning and 70.8MB in the end (delta: -148.6kB). Peak memory consumption was 73.1MB. Max. memory is 16.1GB. * TraceAbstraction took 61937.97ms. Allocated memory was 153.1MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 69.8MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. * Witness Printer took 201.80ms. Allocated memory is still 3.3GB. Free memory was 2.1GB in the beginning and 2.0GB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1579]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 148 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 61.8s, OverallIterations: 23, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.4s, AutomataDifference: 22.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 13.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2643 SdHoareTripleChecker+Valid, 18.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2643 mSDsluCounter, 2612 SdHoareTripleChecker+Invalid, 15.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 117 mSDsCounter, 2041 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11321 IncrementalHoareTripleChecker+Invalid, 13362 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2041 mSolverCounterUnsat, 2495 mSDtfsCounter, 11321 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1884 GetRequests, 1846 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29461occurred in iteration=20, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 12447 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 465 NumberOfFragments, 111 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1284 FormulaSimplificationTreeSizeReduction, 7.5s HoareSimplificationTime, 3 FomulaSimplificationsInter, 22168 FormulaSimplificationTreeSizeReductionInter, 6.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 7751 NumberOfCodeBlocks, 7625 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 7722 ConstructedInterpolants, 0 QuantifiedInterpolants, 20576 SizeOfPredicates, 12 NumberOfNonLiveVariables, 3336 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 29 InterpolantComputations, 23 PerfectInterpolantSequences, 5856/5892 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1662]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: ((((((a5 == 1 && a6 == 0) && a27 == 1) || (((a26 == 1 && a5 == 1) && a12 == 1) && a3 == 0)) || (a5 == 1 && 1 <= a3)) || ((a5 == 1 && a26 <= 0) && a3 == 0)) || (a5 == 1 && a11 == 1)) || (a5 == 1 && a6 == 1) - InvariantResult [Line: 1668]: Loop Invariant Derived loop invariant: ((((((a5 == 1 && a6 == 0) && a27 == 1) || (((a26 == 1 && a5 == 1) && a12 == 1) && a3 == 0)) || (a5 == 1 && 1 <= a3)) || ((a5 == 1 && a26 <= 0) && a3 == 0)) || (a5 == 1 && a11 == 1)) || (a5 == 1 && a6 == 1) RESULT: Ultimate proved your program to be correct! [2022-11-19 06:52:20,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5eeddbe-daaa-4498-af76-44c33b270edc/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE