./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/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_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/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_f4becb9f-376c-4634-889d-5c2b5937d742/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 24c46cfa0dbb54d68ea1c1d9e6e82d14a582b1d00782b6decedd8126f489ee67 --- 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 06:41:05,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:41:05,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:41:05,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:41:05,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:41:05,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:41:05,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:41:05,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:41:05,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:41:05,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:41:05,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:41:05,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:41:05,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:41:05,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:41:05,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:41:05,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:41:05,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:41:05,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:41:05,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:41:05,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:41:05,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:41:05,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:41:05,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:41:05,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:41:05,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:41:05,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:41:05,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:41:05,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:41:05,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:41:05,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:41:05,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:41:05,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:41:05,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:41:05,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:41:05,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:41:05,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:41:05,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:41:05,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:41:05,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:41:05,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:41:05,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:41:05,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:41:05,620 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:41:05,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:41:05,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:41:05,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:41:05,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:41:05,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:41:05,626 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:41:05,626 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:41:05,627 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:41:05,627 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:41:05,628 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:41:05,628 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:41:05,629 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:41:05,629 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:41:05,629 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:41:05,629 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:41:05,630 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:41:05,630 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:41:05,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:41:05,631 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:41:05,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:41:05,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:41:05,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:41:05,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:41:05,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:41:05,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:41:05,634 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:41:05,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:41:05,634 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:41:05,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:41:05,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:41:05,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:41:05,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:41:05,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:41:05,636 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:41:05,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:41:05,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:41:05,636 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:41:05,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:41:05,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:41:05,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:41:05,637 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_f4becb9f-376c-4634-889d-5c2b5937d742/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24c46cfa0dbb54d68ea1c1d9e6e82d14a582b1d00782b6decedd8126f489ee67 [2022-11-19 06:41:05,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:41:05,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:41:05,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:41:05,991 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:41:05,992 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:41:05,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2022-11-19 06:41:06,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/data/c35d941d0/f0550190170d4a29b76b3f041f67bce7/FLAG9a347a0ed [2022-11-19 06:41:06,602 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:41:06,602 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2022-11-19 06:41:06,611 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/data/c35d941d0/f0550190170d4a29b76b3f041f67bce7/FLAG9a347a0ed [2022-11-19 06:41:06,919 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/data/c35d941d0/f0550190170d4a29b76b3f041f67bce7 [2022-11-19 06:41:06,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:41:06,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:41:06,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:41:06,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:41:06,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:41:06,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:41:06" (1/1) ... [2022-11-19 06:41:06,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec957a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:06, skipping insertion in model container [2022-11-19 06:41:06,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:41:06" (1/1) ... [2022-11-19 06:41:06,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:41:06,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:41:07,201 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_f4becb9f-376c-4634-889d-5c2b5937d742/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c[3018,3031] [2022-11-19 06:41:07,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:41:07,219 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:41:07,245 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_f4becb9f-376c-4634-889d-5c2b5937d742/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c[3018,3031] [2022-11-19 06:41:07,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:41:07,262 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:41:07,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:07 WrapperNode [2022-11-19 06:41:07,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:41:07,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:41:07,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:41:07,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:41:07,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:07" (1/1) ... [2022-11-19 06:41:07,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:07" (1/1) ... [2022-11-19 06:41:07,329 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 137 [2022-11-19 06:41:07,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:41:07,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:41:07,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:41:07,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:41:07,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:07" (1/1) ... [2022-11-19 06:41:07,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:07" (1/1) ... [2022-11-19 06:41:07,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:07" (1/1) ... [2022-11-19 06:41:07,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:07" (1/1) ... [2022-11-19 06:41:07,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:07" (1/1) ... [2022-11-19 06:41:07,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:07" (1/1) ... [2022-11-19 06:41:07,362 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:07" (1/1) ... [2022-11-19 06:41:07,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:07" (1/1) ... [2022-11-19 06:41:07,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:41:07,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:41:07,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:41:07,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:41:07,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:07" (1/1) ... [2022-11-19 06:41:07,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:41:07,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:41:07,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:41:07,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:41:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:41:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:41:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:41:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:41:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-19 06:41:07,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-19 06:41:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-19 06:41:07,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-19 06:41:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-19 06:41:07,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-19 06:41:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-19 06:41:07,458 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-19 06:41:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:41:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-19 06:41:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-19 06:41:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:41:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:41:07,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:41:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:41:07,460 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 06:41:07,569 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:41:07,571 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:41:08,011 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:41:08,140 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:41:08,140 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 06:41:08,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:41:08 BoogieIcfgContainer [2022-11-19 06:41:08,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:41:08,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:41:08,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:41:08,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:41:08,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:41:06" (1/3) ... [2022-11-19 06:41:08,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c3b97e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:41:08, skipping insertion in model container [2022-11-19 06:41:08,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:07" (2/3) ... [2022-11-19 06:41:08,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c3b97e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:41:08, skipping insertion in model container [2022-11-19 06:41:08,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:41:08" (3/3) ... [2022-11-19 06:41:08,160 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2022-11-19 06:41:08,169 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 06:41:08,180 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:41:08,180 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:41:08,180 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 06:41:08,259 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-19 06:41:08,305 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 06:41:08,321 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 172 transitions, 376 flow [2022-11-19 06:41:08,324 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 172 transitions, 376 flow [2022-11-19 06:41:08,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 172 transitions, 376 flow [2022-11-19 06:41:08,493 INFO L130 PetriNetUnfolder]: 12/168 cut-off events. [2022-11-19 06:41:08,494 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-19 06:41:08,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 168 events. 12/168 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 112 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 134. Up to 2 conditions per place. [2022-11-19 06:41:08,504 INFO L119 LiptonReduction]: Number of co-enabled transitions 2280 [2022-11-19 06:41:17,263 INFO L134 LiptonReduction]: Checked pairs total: 3875 [2022-11-19 06:41:17,264 INFO L136 LiptonReduction]: Total number of compositions: 160 [2022-11-19 06:41:17,272 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 36 transitions, 104 flow [2022-11-19 06:41:17,327 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 397 states, 396 states have (on average 3.7222222222222223) internal successors, (1474), 396 states have internal predecessors, (1474), 0 states have call successors, (0), 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 06:41:17,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:41:17,351 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;@4d2847b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:41:17,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-19 06:41:17,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 397 states, 396 states have (on average 3.7222222222222223) internal successors, (1474), 396 states have internal predecessors, (1474), 0 states have call successors, (0), 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 06:41:17,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 06:41:17,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:17,370 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] [2022-11-19 06:41:17,370 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-19 06:41:17,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:17,376 INFO L85 PathProgramCache]: Analyzing trace with hash 880255615, now seen corresponding path program 1 times [2022-11-19 06:41:17,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:41:17,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541340105] [2022-11-19 06:41:17,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:17,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:41:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:17,877 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 06:41:17,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:41:17,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541340105] [2022-11-19 06:41:17,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541340105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:17,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:17,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:41:17,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148845025] [2022-11-19 06:41:17,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:17,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:41:17,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:41:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:41:17,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:41:17,912 INFO L87 Difference]: Start difference. First operand has 397 states, 396 states have (on average 3.7222222222222223) internal successors, (1474), 396 states have internal predecessors, (1474), 0 states have call successors, (0), 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 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 06:41:18,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:18,064 INFO L93 Difference]: Finished difference Result 479 states and 1790 transitions. [2022-11-19 06:41:18,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:41:18,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2022-11-19 06:41:18,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:18,082 INFO L225 Difference]: With dead ends: 479 [2022-11-19 06:41:18,082 INFO L226 Difference]: Without dead ends: 479 [2022-11-19 06:41:18,083 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 06:41:18,086 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 43 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:18,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:41:18,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-11-19 06:41:18,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2022-11-19 06:41:18,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 3.7447698744769875) internal successors, (1790), 478 states have internal predecessors, (1790), 0 states have call successors, (0), 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 06:41:18,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1790 transitions. [2022-11-19 06:41:18,203 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1790 transitions. Word has length 27 [2022-11-19 06:41:18,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:18,203 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 1790 transitions. [2022-11-19 06:41:18,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 06:41:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1790 transitions. [2022-11-19 06:41:18,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 06:41:18,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:18,220 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] [2022-11-19 06:41:18,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:41:18,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-19 06:41:18,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:18,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1826105199, now seen corresponding path program 1 times [2022-11-19 06:41:18,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:41:18,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021135219] [2022-11-19 06:41:18,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:18,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:41:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:41:18,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:41:18,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021135219] [2022-11-19 06:41:18,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021135219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:18,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:18,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:41:18,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789476815] [2022-11-19 06:41:18,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:18,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:41:18,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:41:18,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:41:18,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:41:18,442 INFO L87 Difference]: Start difference. First operand 479 states and 1790 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 06:41:18,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:18,544 INFO L93 Difference]: Finished difference Result 619 states and 2336 transitions. [2022-11-19 06:41:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:41:18,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-11-19 06:41:18,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:18,550 INFO L225 Difference]: With dead ends: 619 [2022-11-19 06:41:18,550 INFO L226 Difference]: Without dead ends: 619 [2022-11-19 06:41:18,550 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 06:41:18,552 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:18,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:41:18,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-11-19 06:41:18,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2022-11-19 06:41:18,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 618 states have (on average 3.779935275080906) internal successors, (2336), 618 states have internal predecessors, (2336), 0 states have call successors, (0), 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 06:41:18,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 2336 transitions. [2022-11-19 06:41:18,588 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 2336 transitions. Word has length 28 [2022-11-19 06:41:18,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:18,589 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 2336 transitions. [2022-11-19 06:41:18,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 06:41:18,589 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 2336 transitions. [2022-11-19 06:41:18,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 06:41:18,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:18,592 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] [2022-11-19 06:41:18,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:41:18,593 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-19 06:41:18,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:18,593 INFO L85 PathProgramCache]: Analyzing trace with hash -239951207, now seen corresponding path program 1 times [2022-11-19 06:41:18,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:41:18,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959421680] [2022-11-19 06:41:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:18,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:41:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:41:18,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:41:18,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959421680] [2022-11-19 06:41:18,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959421680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:18,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:18,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:41:18,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905353752] [2022-11-19 06:41:18,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:18,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:41:18,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:41:18,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:41:18,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:41:18,761 INFO L87 Difference]: Start difference. First operand 619 states and 2336 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 06:41:18,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:18,866 INFO L93 Difference]: Finished difference Result 765 states and 2902 transitions. [2022-11-19 06:41:18,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:41:18,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-11-19 06:41:18,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:18,872 INFO L225 Difference]: With dead ends: 765 [2022-11-19 06:41:18,872 INFO L226 Difference]: Without dead ends: 765 [2022-11-19 06:41:18,873 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 06:41:18,874 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 28 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:18,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:41:18,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-11-19 06:41:18,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 765. [2022-11-19 06:41:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 3.798429319371728) internal successors, (2902), 764 states have internal predecessors, (2902), 0 states have call successors, (0), 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 06:41:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 2902 transitions. [2022-11-19 06:41:18,913 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 2902 transitions. Word has length 29 [2022-11-19 06:41:18,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:18,914 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 2902 transitions. [2022-11-19 06:41:18,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 06:41:18,914 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 2902 transitions. [2022-11-19 06:41:18,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 06:41:18,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:18,918 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] [2022-11-19 06:41:18,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:41:18,918 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-19 06:41:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:18,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1676809106, now seen corresponding path program 1 times [2022-11-19 06:41:18,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:41:18,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048215683] [2022-11-19 06:41:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:18,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:41:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:19,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:41:19,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:41:19,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048215683] [2022-11-19 06:41:19,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048215683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:19,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:19,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:41:19,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972911797] [2022-11-19 06:41:19,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:19,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:41:19,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:41:19,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:41:19,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:41:19,099 INFO L87 Difference]: Start difference. First operand 765 states and 2902 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 06:41:19,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:19,192 INFO L93 Difference]: Finished difference Result 766 states and 2903 transitions. [2022-11-19 06:41:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:41:19,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-19 06:41:19,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:19,199 INFO L225 Difference]: With dead ends: 766 [2022-11-19 06:41:19,200 INFO L226 Difference]: Without dead ends: 766 [2022-11-19 06:41:19,200 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 06:41:19,204 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:19,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:41:19,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-11-19 06:41:19,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2022-11-19 06:41:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 3.794771241830065) internal successors, (2903), 765 states have internal predecessors, (2903), 0 states have call successors, (0), 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 06:41:19,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 2903 transitions. [2022-11-19 06:41:19,239 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 2903 transitions. Word has length 30 [2022-11-19 06:41:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:19,240 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 2903 transitions. [2022-11-19 06:41:19,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 06:41:19,241 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 2903 transitions. [2022-11-19 06:41:19,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 06:41:19,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:19,245 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] [2022-11-19 06:41:19,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:41:19,249 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-19 06:41:19,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:19,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1888809452, now seen corresponding path program 1 times [2022-11-19 06:41:19,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:41:19,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205371534] [2022-11-19 06:41:19,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:19,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:41:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 06:41:19,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:41:19,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205371534] [2022-11-19 06:41:19,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205371534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:19,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:19,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:41:19,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71311322] [2022-11-19 06:41:19,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:19,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:41:19,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:41:19,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:41:19,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:41:19,693 INFO L87 Difference]: Start difference. First operand 766 states and 2903 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 06:41:19,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:19,858 INFO L93 Difference]: Finished difference Result 921 states and 3414 transitions. [2022-11-19 06:41:19,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:41:19,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2022-11-19 06:41:19,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:19,864 INFO L225 Difference]: With dead ends: 921 [2022-11-19 06:41:19,865 INFO L226 Difference]: Without dead ends: 670 [2022-11-19 06:41:19,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:41:19,866 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:19,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 5 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:41:19,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-11-19 06:41:19,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2022-11-19 06:41:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 669 states have (on average 3.705530642750374) internal successors, (2479), 669 states have internal predecessors, (2479), 0 states have call successors, (0), 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 06:41:19,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 2479 transitions. [2022-11-19 06:41:19,899 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 2479 transitions. Word has length 31 [2022-11-19 06:41:19,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:19,900 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 2479 transitions. [2022-11-19 06:41:19,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 06:41:19,900 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 2479 transitions. [2022-11-19 06:41:19,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 06:41:19,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:19,902 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] [2022-11-19 06:41:19,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:41:19,903 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-19 06:41:19,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:19,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1202776224, now seen corresponding path program 2 times [2022-11-19 06:41:19,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:41:19,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527328570] [2022-11-19 06:41:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:19,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:41:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:41:20,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:41:20,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527328570] [2022-11-19 06:41:20,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527328570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:41:20,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505574563] [2022-11-19 06:41:20,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:41:20,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:41:20,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:41:20,529 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:41:20,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:41:20,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 06:41:20,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:41:20,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-19 06:41:20,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:20,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:20,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 06:41:20,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-19 06:41:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:41:21,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:41:25,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-11-19 06:41:25,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 06:41:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:41:25,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505574563] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 06:41:25,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:41:25,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 8] total 22 [2022-11-19 06:41:25,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196563240] [2022-11-19 06:41:25,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:25,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 06:41:25,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:41:25,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 06:41:25,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=443, Unknown=6, NotChecked=0, Total=552 [2022-11-19 06:41:25,778 INFO L87 Difference]: Start difference. First operand 670 states and 2479 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 06:41:26,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:26,836 INFO L93 Difference]: Finished difference Result 2021 states and 7596 transitions. [2022-11-19 06:41:26,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-19 06:41:26,837 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2022-11-19 06:41:26,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:26,848 INFO L225 Difference]: With dead ends: 2021 [2022-11-19 06:41:26,848 INFO L226 Difference]: Without dead ends: 1597 [2022-11-19 06:41:26,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=200, Invalid=1125, Unknown=7, NotChecked=0, Total=1332 [2022-11-19 06:41:26,853 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 211 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 268 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:26,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 33 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 343 Invalid, 0 Unknown, 268 Unchecked, 0.5s Time] [2022-11-19 06:41:26,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2022-11-19 06:41:26,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 763. [2022-11-19 06:41:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 762 states have (on average 3.6929133858267718) internal successors, (2814), 762 states have internal predecessors, (2814), 0 states have call successors, (0), 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 06:41:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 2814 transitions. [2022-11-19 06:41:26,897 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 2814 transitions. Word has length 31 [2022-11-19 06:41:26,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:26,898 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 2814 transitions. [2022-11-19 06:41:26,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 06:41:26,899 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 2814 transitions. [2022-11-19 06:41:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 06:41:26,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:26,902 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] [2022-11-19 06:41:26,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 06:41:27,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 06:41:27,108 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-19 06:41:27,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:27,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1816651040, now seen corresponding path program 3 times [2022-11-19 06:41:27,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:41:27,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477594577] [2022-11-19 06:41:27,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:27,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:41:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:41:27,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:41:27,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477594577] [2022-11-19 06:41:27,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477594577] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:41:27,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226520400] [2022-11-19 06:41:27,953 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:41:27,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:41:27,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:41:27,956 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:41:27,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4becb9f-376c-4634-889d-5c2b5937d742/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:41:28,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:41:28,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:41:28,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-19 06:41:28,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:41:28,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 06:41:28,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 06:41:28,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:28,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 06:41:28,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:28,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 06:41:28,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:28,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 06:41:28,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-19 06:41:28,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:41:28,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:41:29,101 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_283 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_283) c_~A~0.base) c_~A~0.offset))) (or (< c_~min~0 (+ 2 .cse0)) (< 2147483646 .cse0)))) (= (mod c_~b1~0 256) 0)) is different from false [2022-11-19 06:41:31,782 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_281 (Array Int Int)) (v_ArrVal_280 (Array Int Int)) (v_ArrVal_283 (Array Int Int)) (v_ArrVal_282 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_280))) (let ((.cse0 (select (select (store (store (store .cse1 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_281) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_282) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_283) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 2147483646 .cse0) (< (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ 2 .cse0)))))) is different from false [2022-11-19 06:41:31,796 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:41:31,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 60 [2022-11-19 06:41:31,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6875 treesize of output 6331 [2022-11-19 06:41:32,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3131 treesize of output 3035 [2022-11-19 06:41:32,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6163 treesize of output 5891 [2022-11-19 06:41:32,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5891 treesize of output 5507 [2022-11-19 06:41:32,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5507 treesize of output 5315