./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-queue-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-queue-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI --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 a9a441ad5f70efa202eb02609b90cbc83f5bf4487618c2a09bffcfe320d65f90 --- 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-5e519f3 [2022-11-03 04:03:54,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:03:54,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:03:54,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:03:54,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:03:54,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:03:54,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:03:54,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:03:54,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:03:54,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:03:54,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:03:54,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:03:54,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:03:54,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:03:54,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:03:54,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:03:54,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:03:54,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:03:54,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:03:54,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:03:54,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:03:54,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:03:54,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:03:54,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:03:54,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:03:54,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:03:54,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:03:54,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:03:54,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:03:54,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:03:54,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:03:54,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:03:54,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:03:54,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:03:54,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:03:54,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:03:54,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:03:54,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:03:54,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:03:54,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:03:54,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:03:54,358 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:03:54,396 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:03:54,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:03:54,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:03:54,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:03:54,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:03:54,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:03:54,399 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:03:54,399 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:03:54,399 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:03:54,399 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:03:54,400 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:03:54,400 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:03:54,400 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:03:54,401 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:03:54,401 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:03:54,401 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:03:54,401 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:03:54,401 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:03:54,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:03:54,402 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:03:54,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:03:54,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:03:54,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:03:54,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:03:54,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:03:54,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:03:54,405 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:03:54,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:03:54,405 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:03:54,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:03:54,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:03:54,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:03:54,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:03:54,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:03:54,407 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:03:54,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:03:54,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:03:54,407 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:03:54,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:03:54,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:03:54,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:03:54,408 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_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9a441ad5f70efa202eb02609b90cbc83f5bf4487618c2a09bffcfe320d65f90 [2022-11-03 04:03:54,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:03:54,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:03:54,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:03:54,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:03:54,775 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:03:54,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/forester-heap/sll-queue-1.i [2022-11-03 04:03:54,853 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/data/43aa8862c/8a9de1f7856a4273bc42cef28d41f2c1/FLAG420dcfec4 [2022-11-03 04:03:55,361 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:03:55,362 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i [2022-11-03 04:03:55,381 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/data/43aa8862c/8a9de1f7856a4273bc42cef28d41f2c1/FLAG420dcfec4 [2022-11-03 04:03:55,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/data/43aa8862c/8a9de1f7856a4273bc42cef28d41f2c1 [2022-11-03 04:03:55,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:03:55,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:03:55,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:03:55,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:03:55,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:03:55,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:03:55" (1/1) ... [2022-11-03 04:03:55,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a48ba17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:55, skipping insertion in model container [2022-11-03 04:03:55,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:03:55" (1/1) ... [2022-11-03 04:03:55,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:03:55,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:03:56,197 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22387,22400] [2022-11-03 04:03:56,203 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22458,22471] [2022-11-03 04:03:56,204 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22532,22545] [2022-11-03 04:03:56,205 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22624,22637] [2022-11-03 04:03:56,207 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22701,22714] [2022-11-03 04:03:56,209 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22796,22809] [2022-11-03 04:03:56,212 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22873,22886] [2022-11-03 04:03:56,214 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22956,22969] [2022-11-03 04:03:56,217 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23051,23064] [2022-11-03 04:03:56,218 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23128,23141] [2022-11-03 04:03:56,220 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23211,23224] [2022-11-03 04:03:56,222 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23300,23313] [2022-11-03 04:03:56,223 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23386,23399] [2022-11-03 04:03:56,226 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23532,23545] [2022-11-03 04:03:56,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:03:56,243 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:03:56,300 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22387,22400] [2022-11-03 04:03:56,301 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22458,22471] [2022-11-03 04:03:56,301 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22532,22545] [2022-11-03 04:03:56,302 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22624,22637] [2022-11-03 04:03:56,303 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22701,22714] [2022-11-03 04:03:56,304 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22796,22809] [2022-11-03 04:03:56,304 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22873,22886] [2022-11-03 04:03:56,305 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22956,22969] [2022-11-03 04:03:56,306 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23051,23064] [2022-11-03 04:03:56,307 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23128,23141] [2022-11-03 04:03:56,308 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23211,23224] [2022-11-03 04:03:56,309 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23300,23313] [2022-11-03 04:03:56,310 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23386,23399] [2022-11-03 04:03:56,311 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23532,23545] [2022-11-03 04:03:56,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:03:56,340 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:03:56,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:56 WrapperNode [2022-11-03 04:03:56,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:03:56,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:03:56,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:03:56,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:03:56,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:56" (1/1) ... [2022-11-03 04:03:56,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:56" (1/1) ... [2022-11-03 04:03:56,424 INFO L138 Inliner]: procedures = 119, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 219 [2022-11-03 04:03:56,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:03:56,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:03:56,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:03:56,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:03:56,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:56" (1/1) ... [2022-11-03 04:03:56,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:56" (1/1) ... [2022-11-03 04:03:56,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:56" (1/1) ... [2022-11-03 04:03:56,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:56" (1/1) ... [2022-11-03 04:03:56,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:56" (1/1) ... [2022-11-03 04:03:56,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:56" (1/1) ... [2022-11-03 04:03:56,482 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:56" (1/1) ... [2022-11-03 04:03:56,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:56" (1/1) ... [2022-11-03 04:03:56,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:03:56,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:03:56,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:03:56,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:03:56,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:56" (1/1) ... [2022-11-03 04:03:56,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:03:56,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:03:56,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:03:56,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:03:56,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:03:56,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:03:56,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:03:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:03:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:03:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:03:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:03:56,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:03:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:03:56,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:03:56,758 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:03:56,760 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:03:57,066 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:03:57,128 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:03:57,128 INFO L300 CfgBuilder]: Removed 31 assume(true) statements. [2022-11-03 04:03:57,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:03:57 BoogieIcfgContainer [2022-11-03 04:03:57,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:03:57,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:03:57,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:03:57,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:03:57,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:03:55" (1/3) ... [2022-11-03 04:03:57,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df252f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:03:57, skipping insertion in model container [2022-11-03 04:03:57,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:56" (2/3) ... [2022-11-03 04:03:57,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df252f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:03:57, skipping insertion in model container [2022-11-03 04:03:57,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:03:57" (3/3) ... [2022-11-03 04:03:57,140 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-queue-1.i [2022-11-03 04:03:57,159 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:03:57,159 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-03 04:03:57,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:03:57,226 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;@5a2c4d1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:03:57,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-03 04:03:57,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 61 states have (on average 2.0491803278688523) internal successors, (125), 75 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:57,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 04:03:57,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:57,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 04:03:57,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:03:57,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:57,251 INFO L85 PathProgramCache]: Analyzing trace with hash 11175788, now seen corresponding path program 1 times [2022-11-03 04:03:57,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:57,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042723719] [2022-11-03 04:03:57,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:57,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:57,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:03:57,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:57,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042723719] [2022-11-03 04:03:57,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042723719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:57,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:57,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:03:57,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940227047] [2022-11-03 04:03:57,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:57,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:03:57,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:57,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:03:57,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:03:57,554 INFO L87 Difference]: Start difference. First operand has 76 states, 61 states have (on average 2.0491803278688523) internal successors, (125), 75 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:57,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:57,631 INFO L93 Difference]: Finished difference Result 151 states and 249 transitions. [2022-11-03 04:03:57,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:03:57,634 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-03 04:03:57,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:57,643 INFO L225 Difference]: With dead ends: 151 [2022-11-03 04:03:57,644 INFO L226 Difference]: Without dead ends: 74 [2022-11-03 04:03:57,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:03:57,653 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:57,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:03:57,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-03 04:03:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-03 04:03:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 60 states have (on average 1.3) internal successors, (78), 73 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:57,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2022-11-03 04:03:57,707 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 4 [2022-11-03 04:03:57,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:57,708 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2022-11-03 04:03:57,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:57,708 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2022-11-03 04:03:57,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 04:03:57,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:57,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 04:03:57,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:03:57,710 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:03:57,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:57,712 INFO L85 PathProgramCache]: Analyzing trace with hash 345025043, now seen corresponding path program 1 times [2022-11-03 04:03:57,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:57,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710648583] [2022-11-03 04:03:57,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:57,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:57,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:03:57,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:57,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710648583] [2022-11-03 04:03:57,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710648583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:57,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:57,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:03:57,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581632100] [2022-11-03 04:03:57,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:57,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:03:57,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:57,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:03:57,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:03:57,892 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:57,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:57,972 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2022-11-03 04:03:57,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:03:57,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-03 04:03:57,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:57,974 INFO L225 Difference]: With dead ends: 74 [2022-11-03 04:03:57,976 INFO L226 Difference]: Without dead ends: 64 [2022-11-03 04:03:57,976 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 [2022-11-03 04:03:57,977 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:57,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 51 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:03:57,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-03 04:03:57,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-03 04:03:57,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 63 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:57,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2022-11-03 04:03:58,000 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 5 [2022-11-03 04:03:58,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:58,001 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2022-11-03 04:03:58,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:58,001 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2022-11-03 04:03:58,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 04:03:58,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:58,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:58,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:03:58,004 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:03:58,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:58,007 INFO L85 PathProgramCache]: Analyzing trace with hash 856712023, now seen corresponding path program 1 times [2022-11-03 04:03:58,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:58,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577183988] [2022-11-03 04:03:58,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:58,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:03:58,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:58,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577183988] [2022-11-03 04:03:58,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577183988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:58,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:58,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:03:58,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135577903] [2022-11-03 04:03:58,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:58,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:03:58,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:58,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:03:58,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:03:58,131 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:58,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:58,167 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2022-11-03 04:03:58,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:03:58,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 04:03:58,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:58,168 INFO L225 Difference]: With dead ends: 64 [2022-11-03 04:03:58,168 INFO L226 Difference]: Without dead ends: 62 [2022-11-03 04:03:58,169 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 [2022-11-03 04:03:58,170 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 53 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:58,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 66 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:03:58,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-03 04:03:58,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-03 04:03:58,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:58,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2022-11-03 04:03:58,178 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 7 [2022-11-03 04:03:58,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:58,178 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2022-11-03 04:03:58,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:58,178 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2022-11-03 04:03:58,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 04:03:58,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:58,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:58,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:03:58,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:03:58,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash 630794574, now seen corresponding path program 1 times [2022-11-03 04:03:58,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:58,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768284462] [2022-11-03 04:03:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:58,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:03:58,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:58,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768284462] [2022-11-03 04:03:58,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768284462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:58,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:58,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:03:58,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753257208] [2022-11-03 04:03:58,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:58,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:03:58,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:58,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:03:58,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:03:58,306 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:58,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:58,400 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions. [2022-11-03 04:03:58,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:03:58,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 04:03:58,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:58,406 INFO L225 Difference]: With dead ends: 130 [2022-11-03 04:03:58,406 INFO L226 Difference]: Without dead ends: 78 [2022-11-03 04:03:58,407 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 [2022-11-03 04:03:58,410 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 12 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:58,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 115 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:03:58,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-03 04:03:58,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2022-11-03 04:03:58,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 68 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:58,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2022-11-03 04:03:58,420 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 11 [2022-11-03 04:03:58,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:58,420 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2022-11-03 04:03:58,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:58,428 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2022-11-03 04:03:58,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 04:03:58,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:58,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:58,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:03:58,435 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:03:58,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:58,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2084418584, now seen corresponding path program 1 times [2022-11-03 04:03:58,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:58,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589622457] [2022-11-03 04:03:58,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:58,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:58,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:03:58,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:58,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589622457] [2022-11-03 04:03:58,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589622457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:58,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:58,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:03:58,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115437770] [2022-11-03 04:03:58,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:58,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:03:58,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:58,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:03:58,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:03:58,549 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:58,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:58,646 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2022-11-03 04:03:58,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:03:58,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-11-03 04:03:58,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:58,650 INFO L225 Difference]: With dead ends: 78 [2022-11-03 04:03:58,650 INFO L226 Difference]: Without dead ends: 64 [2022-11-03 04:03:58,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:03:58,654 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 3 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:58,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 171 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:03:58,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-03 04:03:58,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-03 04:03:58,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 63 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:58,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2022-11-03 04:03:58,671 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 14 [2022-11-03 04:03:58,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:58,671 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2022-11-03 04:03:58,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:58,672 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2022-11-03 04:03:58,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 04:03:58,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:58,673 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:58,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:03:58,673 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:03:58,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:58,674 INFO L85 PathProgramCache]: Analyzing trace with hash 257003891, now seen corresponding path program 1 times [2022-11-03 04:03:58,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:58,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396996789] [2022-11-03 04:03:58,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:58,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:59,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:03:59,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:59,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396996789] [2022-11-03 04:03:59,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396996789] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:03:59,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331172202] [2022-11-03 04:03:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:59,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:03:59,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:03:59,217 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:03:59,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:03:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:59,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 04:03:59,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:03:59,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:03:59,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 14 [2022-11-03 04:03:59,531 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:03:59,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-03 04:03:59,543 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-03 04:03:59,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 04:03:59,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-03 04:03:59,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:03:59,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:03:59,839 INFO L356 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2022-11-03 04:03:59,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 166 treesize of output 201 [2022-11-03 04:03:59,883 INFO L356 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2022-11-03 04:03:59,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 142 treesize of output 158 [2022-11-03 04:03:59,936 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:03:59,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 179 treesize of output 161 [2022-11-03 04:04:00,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4462 treesize of output 4394 [2022-11-03 04:04:00,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4376 treesize of output 4312 [2022-11-03 04:04:00,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4312 treesize of output 4248 [2022-11-03 04:04:00,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4248 treesize of output 4120 [2022-11-03 04:04:00,907 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:00,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 64 [2022-11-03 04:04:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:01,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331172202] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:04:01,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1430532332] [2022-11-03 04:04:01,091 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-03 04:04:01,091 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:04:01,095 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:04:01,101 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:04:01,101 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:04:01,196 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 04:04:01,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 04:04:01,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 04:04:01,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:01,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:01,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2022-11-03 04:04:01,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:01,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 04:04:01,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:01,264 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 04:04:01,352 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 04:04:01,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 04:04:01,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:01,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 18 [2022-11-03 04:04:01,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:01,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 18 [2022-11-03 04:04:01,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:01,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:01,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 56 [2022-11-03 04:04:01,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-03 04:04:01,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:01,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:01,627 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:02,062 INFO L356 Elim1Store]: treesize reduction 103, result has 24.8 percent of original size [2022-11-03 04:04:02,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 635 treesize of output 579 [2022-11-03 04:04:02,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:02,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:02,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:02,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:02,233 INFO L356 Elim1Store]: treesize reduction 80, result has 12.1 percent of original size [2022-11-03 04:04:02,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 494 treesize of output 429 [2022-11-03 04:04:02,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:02,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:02,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:02,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:02,372 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-03 04:04:02,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 265 treesize of output 248 [2022-11-03 04:04:02,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:02,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:02,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:02,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:02,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:02,491 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-03 04:04:02,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 265 treesize of output 248 [2022-11-03 04:04:02,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:02,636 INFO L356 Elim1Store]: treesize reduction 82, result has 16.3 percent of original size [2022-11-03 04:04:02,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 256 treesize of output 261 [2022-11-03 04:04:02,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:02,794 INFO L356 Elim1Store]: treesize reduction 122, result has 11.6 percent of original size [2022-11-03 04:04:02,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 261 treesize of output 265 [2022-11-03 04:04:03,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:03,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:03,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:03,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:03,137 INFO L356 Elim1Store]: treesize reduction 78, result has 1.3 percent of original size [2022-11-03 04:04:03,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 634 treesize of output 594 [2022-11-03 04:04:03,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:03,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:03,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:03,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:03,230 INFO L356 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2022-11-03 04:04:03,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 634 treesize of output 614 [2022-11-03 04:04:03,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:03,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:03,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:03,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:03,345 INFO L356 Elim1Store]: treesize reduction 70, result has 11.4 percent of original size [2022-11-03 04:04:03,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 634 treesize of output 603 [2022-11-03 04:04:04,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:04:04,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-03 04:04:04,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:04,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:04,722 INFO L356 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-03 04:04:04,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 366 treesize of output 312 [2022-11-03 04:04:04,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:04,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:04,811 INFO L356 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-03 04:04:04,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 237 treesize of output 175 [2022-11-03 04:04:04,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:04,888 INFO L356 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-03 04:04:04,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2022-11-03 04:04:04,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:04,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:04,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:05,058 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:05,154 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:05,183 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:05,207 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:05,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:05,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 04:04:05,235 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:05,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 04:04:05,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:05,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 04:04:05,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:05,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:05,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:06,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-03 04:04:06,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:06,334 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:06,423 INFO L356 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-03 04:04:06,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 366 treesize of output 304 [2022-11-03 04:04:06,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:06,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:06,520 INFO L356 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-03 04:04:06,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 237 treesize of output 183 [2022-11-03 04:04:06,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:06,595 INFO L356 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-03 04:04:06,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2022-11-03 04:04:06,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:06,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:06,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:06,691 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-03 04:04:06,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 19 [2022-11-03 04:04:06,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:06,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:06,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 04:04:06,783 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-03 04:04:06,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 19 [2022-11-03 04:04:06,796 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:06,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:06,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 04:04:06,865 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-03 04:04:06,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 19 [2022-11-03 04:04:06,878 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:06,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:06,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 04:04:07,102 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:07,120 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:07,143 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:07,155 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:07,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:07,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:04:07,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:07,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:07,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:07,213 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:07,239 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:07,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:04:07,913 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:04:08,907 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1231#(and (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (<= 0 |ULTIMATE.start_main_~item~0#1.offset|) (= |ULTIMATE.start_main_~status~0#1| 1) (<= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0) (<= |ULTIMATE.start_main_~item~0#1.offset| 0) (<= |ULTIMATE.start_main_~head~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~head~0#1.offset|) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0) (= |#NULL.base| 0))' at error location [2022-11-03 04:04:08,907 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:04:08,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:04:08,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-03 04:04:08,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335957087] [2022-11-03 04:04:08,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:04:08,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 04:04:08,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:08,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 04:04:08,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:04:08,909 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:09,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:09,058 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2022-11-03 04:04:09,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:04:09,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-03 04:04:09,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:09,060 INFO L225 Difference]: With dead ends: 125 [2022-11-03 04:04:09,060 INFO L226 Difference]: Without dead ends: 123 [2022-11-03 04:04:09,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:04:09,061 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 50 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:09,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 232 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 49 Unchecked, 0.1s Time] [2022-11-03 04:04:09,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-03 04:04:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 77. [2022-11-03 04:04:09,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 76 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2022-11-03 04:04:09,071 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 17 [2022-11-03 04:04:09,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:09,071 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2022-11-03 04:04:09,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:09,072 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2022-11-03 04:04:09,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 04:04:09,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:09,072 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:09,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:09,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:04:09,290 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:04:09,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:09,290 INFO L85 PathProgramCache]: Analyzing trace with hash -305104244, now seen corresponding path program 1 times [2022-11-03 04:04:09,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:04:09,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742389693] [2022-11-03 04:04:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:09,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:04:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:09,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:09,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:09,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742389693] [2022-11-03 04:04:09,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742389693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:04:09,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117338010] [2022-11-03 04:04:09,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:09,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:04:09,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:04:09,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:04:09,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 04:04:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:09,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:04:09,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:09,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:09,678 INFO L356 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2022-11-03 04:04:09,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 110 treesize of output 151 [2022-11-03 04:04:09,746 INFO L356 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2022-11-03 04:04:09,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 92 treesize of output 133 [2022-11-03 04:04:09,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:09,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117338010] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:04:09,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [126704350] [2022-11-03 04:04:09,844 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-03 04:04:09,844 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:04:09,845 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:04:09,845 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:04:09,846 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:04:09,888 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 04:04:09,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-03 04:04:09,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:09,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:09,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:09,917 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 04:04:09,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 41 [2022-11-03 04:04:09,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:09,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 04:04:09,962 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 04:04:09,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 04:04:09,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:09,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 04:04:10,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:10,018 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:04:10,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 18 [2022-11-03 04:04:10,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:10,063 INFO L356 Elim1Store]: treesize reduction 32, result has 41.8 percent of original size [2022-11-03 04:04:10,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 48 [2022-11-03 04:04:10,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:10,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:10,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:10,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:10,093 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 04:04:10,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 64 [2022-11-03 04:04:10,144 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-03 04:04:10,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 38 [2022-11-03 04:04:10,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:10,172 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 04:04:10,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 22 [2022-11-03 04:04:10,235 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 04:04:10,235 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 04:04:10,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:10,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:10,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:10,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:10,500 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-03 04:04:10,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 284 treesize of output 267 [2022-11-03 04:04:10,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:10,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:10,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:10,926 INFO L356 Elim1Store]: treesize reduction 103, result has 24.8 percent of original size [2022-11-03 04:04:10,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 635 treesize of output 579 [2022-11-03 04:04:10,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:11,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:11,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:11,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:11,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:11,110 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-03 04:04:11,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 272 treesize of output 255 [2022-11-03 04:04:11,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:11,504 INFO L356 Elim1Store]: treesize reduction 114, result has 17.4 percent of original size [2022-11-03 04:04:11,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 268 treesize of output 280 [2022-11-03 04:04:11,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:11,655 INFO L356 Elim1Store]: treesize reduction 55, result has 8.3 percent of original size [2022-11-03 04:04:11,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 263 treesize of output 268 [2022-11-03 04:04:11,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:11,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:11,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:11,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:11,745 INFO L356 Elim1Store]: treesize reduction 80, result has 12.1 percent of original size [2022-11-03 04:04:11,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 494 treesize of output 429 [2022-11-03 04:04:12,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:12,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:12,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:12,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:12,097 INFO L356 Elim1Store]: treesize reduction 70, result has 11.4 percent of original size [2022-11-03 04:04:12,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 634 treesize of output 603 [2022-11-03 04:04:12,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:12,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:12,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:12,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:12,213 INFO L356 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2022-11-03 04:04:12,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 634 treesize of output 614 [2022-11-03 04:04:12,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:12,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:12,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:12,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:12,304 INFO L356 Elim1Store]: treesize reduction 78, result has 1.3 percent of original size [2022-11-03 04:04:12,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 634 treesize of output 594 [2022-11-03 04:04:13,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-03 04:04:13,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:04:13,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:13,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:13,524 INFO L356 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-03 04:04:13,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 366 treesize of output 304 [2022-11-03 04:04:13,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:13,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:13,613 INFO L356 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-03 04:04:13,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 237 treesize of output 183 [2022-11-03 04:04:13,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:13,682 INFO L356 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-03 04:04:13,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2022-11-03 04:04:13,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:13,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:13,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:13,768 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-03 04:04:13,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 19 [2022-11-03 04:04:13,781 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:13,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:13,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 04:04:13,828 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-03 04:04:13,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 19 [2022-11-03 04:04:13,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:13,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:13,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 04:04:13,884 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-03 04:04:13,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 19 [2022-11-03 04:04:13,897 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:13,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:13,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 04:04:14,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:04:14,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:14,116 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:14,125 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:14,133 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:14,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:14,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:04:14,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:14,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:14,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:04:14,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:14,213 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:14,229 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:14,250 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:14,270 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:14,290 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:14,337 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:14,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:04:14,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:14,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:14,901 INFO L356 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-03 04:04:14,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 366 treesize of output 304 [2022-11-03 04:04:14,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:14,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:15,016 INFO L356 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-03 04:04:15,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 237 treesize of output 183 [2022-11-03 04:04:15,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:15,074 INFO L356 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-03 04:04:15,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2022-11-03 04:04:15,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:15,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:15,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:15,195 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:15,305 INFO L356 Elim1Store]: treesize reduction 24, result has 25.0 percent of original size [2022-11-03 04:04:15,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 479 treesize of output 410 [2022-11-03 04:04:15,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:15,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:15,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-03 04:04:15,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 04:04:15,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:15,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 04:04:15,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:15,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 04:04:15,489 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:15,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-03 04:04:15,925 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:04:16,715 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1606#(and (= |ULTIMATE.start_main_~status~0#1| 2) (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (<= 0 |ULTIMATE.start_main_~item~0#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (<= |ULTIMATE.start_main_~item~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0) (= |#NULL.base| 0))' at error location [2022-11-03 04:04:16,715 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:04:16,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:04:16,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-11-03 04:04:16,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39175085] [2022-11-03 04:04:16,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:04:16,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:04:16,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:16,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:04:16,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:04:16,717 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:16,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:16,774 INFO L93 Difference]: Finished difference Result 133 states and 143 transitions. [2022-11-03 04:04:16,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:04:16,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 04:04:16,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:16,776 INFO L225 Difference]: With dead ends: 133 [2022-11-03 04:04:16,776 INFO L226 Difference]: Without dead ends: 88 [2022-11-03 04:04:16,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:04:16,777 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 19 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:16,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 165 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:04:16,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-03 04:04:16,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2022-11-03 04:04:16,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 78 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:16,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2022-11-03 04:04:16,786 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 18 [2022-11-03 04:04:16,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:16,787 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2022-11-03 04:04:16,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:16,787 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2022-11-03 04:04:16,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 04:04:16,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:16,788 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:16,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:17,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:04:17,001 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:04:17,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:17,002 INFO L85 PathProgramCache]: Analyzing trace with hash -60651048, now seen corresponding path program 2 times [2022-11-03 04:04:17,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:04:17,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660630268] [2022-11-03 04:04:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:17,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:04:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:17,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:17,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660630268] [2022-11-03 04:04:17,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660630268] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:04:17,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993050592] [2022-11-03 04:04:17,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 04:04:17,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:04:17,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:04:17,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:04:17,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 04:04:17,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 04:04:17,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:04:17,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:04:17,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:17,370 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 04:04:17,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-03 04:04:17,386 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 04:04:17,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-03 04:04:17,421 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:17,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:17,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993050592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:04:17,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [327333287] [2022-11-03 04:04:17,463 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-03 04:04:17,464 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:04:17,464 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:04:17,464 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:04:17,464 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:04:17,510 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 04:04:17,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 04:04:17,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2022-11-03 04:04:17,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 04:04:17,551 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 04:04:17,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 04:04:17,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:17,631 INFO L356 Elim1Store]: treesize reduction 38, result has 48.6 percent of original size [2022-11-03 04:04:17,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 68 [2022-11-03 04:04:17,679 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 04:04:17,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 04:04:17,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 18 [2022-11-03 04:04:17,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-03 04:04:17,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 18 [2022-11-03 04:04:17,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:17,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:18,011 INFO L356 Elim1Store]: treesize reduction 112, result has 18.2 percent of original size [2022-11-03 04:04:18,012 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 635 treesize of output 570 [2022-11-03 04:04:18,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:18,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:18,269 INFO L356 Elim1Store]: treesize reduction 103, result has 24.8 percent of original size [2022-11-03 04:04:18,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 499 treesize of output 443 [2022-11-03 04:04:18,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:18,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:18,379 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-03 04:04:18,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 265 treesize of output 248 [2022-11-03 04:04:18,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:18,474 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-03 04:04:18,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 265 treesize of output 248 [2022-11-03 04:04:18,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,643 INFO L356 Elim1Store]: treesize reduction 114, result has 17.4 percent of original size [2022-11-03 04:04:18,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 261 treesize of output 273 [2022-11-03 04:04:18,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,730 INFO L356 Elim1Store]: treesize reduction 55, result has 8.3 percent of original size [2022-11-03 04:04:18,730 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 256 treesize of output 261 [2022-11-03 04:04:19,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:19,041 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:19,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:19,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:19,062 INFO L356 Elim1Store]: treesize reduction 70, result has 11.4 percent of original size [2022-11-03 04:04:19,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 634 treesize of output 603 [2022-11-03 04:04:19,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:19,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:19,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:19,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:19,167 INFO L356 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2022-11-03 04:04:19,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 634 treesize of output 614 [2022-11-03 04:04:19,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:19,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:19,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:19,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:19,268 INFO L356 Elim1Store]: treesize reduction 78, result has 1.3 percent of original size [2022-11-03 04:04:19,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 634 treesize of output 594 [2022-11-03 04:04:19,510 INFO L356 Elim1Store]: treesize reduction 179, result has 19.0 percent of original size [2022-11-03 04:04:19,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 673 treesize of output 699 [2022-11-03 04:04:19,534 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:19,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 913 treesize of output 909 [2022-11-03 04:04:19,831 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:19,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:19,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:19,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 21 [2022-11-03 04:04:19,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 04:04:20,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:04:20,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:20,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:21,042 INFO L356 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-03 04:04:21,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 366 treesize of output 304 [2022-11-03 04:04:21,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:21,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:21,132 INFO L356 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-03 04:04:21,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 237 treesize of output 183 [2022-11-03 04:04:21,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:21,188 INFO L356 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-03 04:04:21,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2022-11-03 04:04:21,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:21,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:21,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:21,265 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-03 04:04:21,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 19 [2022-11-03 04:04:21,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:21,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:21,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 04:04:21,322 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-03 04:04:21,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 19 [2022-11-03 04:04:21,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:21,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:21,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 04:04:21,376 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-03 04:04:21,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 19 [2022-11-03 04:04:21,388 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:21,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:21,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 04:04:21,473 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-03 04:04:21,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 23 [2022-11-03 04:04:21,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:21,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:21,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-03 04:04:21,537 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-03 04:04:21,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 23 [2022-11-03 04:04:21,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:21,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:21,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-03 04:04:21,584 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-03 04:04:21,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 23 [2022-11-03 04:04:21,593 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:21,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:21,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-03 04:04:21,637 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:21,649 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:21,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-03 04:04:22,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:04:22,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-03 04:04:22,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:22,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:22,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:22,581 INFO L356 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-03 04:04:22,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 366 treesize of output 304 [2022-11-03 04:04:22,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:22,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:22,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:22,699 INFO L356 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-03 04:04:22,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 237 treesize of output 183 [2022-11-03 04:04:22,730 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:22,757 INFO L356 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-03 04:04:22,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2022-11-03 04:04:22,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:22,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:22,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:04:22,900 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:22,957 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:22,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:22,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 04:04:23,003 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:23,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:23,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 04:04:23,034 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:04:23,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:23,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 04:04:23,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:23,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:23,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:23,783 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:04:24,730 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2025#(and (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (<= 0 |ULTIMATE.start_main_~item~0#1.offset|) (= |ULTIMATE.start_main_~status~0#1| 1) (<= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0) (<= |ULTIMATE.start_main_~item~0#1.offset| 0) (<= |ULTIMATE.start_main_~head~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~head~0#1.offset|) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0) (= |#NULL.base| 0))' at error location [2022-11-03 04:04:24,730 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:04:24,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:04:24,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-03 04:04:24,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672332458] [2022-11-03 04:04:24,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:04:24,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:04:24,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:24,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:04:24,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:04:24,732 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:24,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:24,854 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2022-11-03 04:04:24,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:04:24,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-03 04:04:24,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:24,856 INFO L225 Difference]: With dead ends: 143 [2022-11-03 04:04:24,856 INFO L226 Difference]: Without dead ends: 102 [2022-11-03 04:04:24,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:04:24,860 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 135 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:24,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 269 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:04:24,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-03 04:04:24,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 83. [2022-11-03 04:04:24,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 82 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:24,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2022-11-03 04:04:24,875 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 23 [2022-11-03 04:04:24,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:24,875 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2022-11-03 04:04:24,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:24,876 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2022-11-03 04:04:24,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 04:04:24,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:24,880 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:24,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:25,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:04:25,105 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:04:25,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:25,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1562472761, now seen corresponding path program 2 times [2022-11-03 04:04:25,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:04:25,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533692822] [2022-11-03 04:04:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:25,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:04:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:25,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:25,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533692822] [2022-11-03 04:04:25,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533692822] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:04:25,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724040692] [2022-11-03 04:04:25,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 04:04:25,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:04:25,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:04:25,597 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:04:25,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 04:04:25,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 04:04:25,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:04:25,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 04:04:25,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:25,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:04:25,815 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 04:04:25,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-03 04:04:25,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 14 [2022-11-03 04:04:25,833 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 04:04:25,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 04:04:25,844 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:25,866 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 04:04:25,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 04:04:25,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:25,991 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-03 04:04:25,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 40 [2022-11-03 04:04:26,005 INFO L356 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-03 04:04:26,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-03 04:04:26,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-03 04:04:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:26,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:26,289 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:26,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-03 04:04:26,299 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:26,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 82 [2022-11-03 04:04:26,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2022-11-03 04:04:26,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2022-11-03 04:04:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:26,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724040692] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:04:26,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [693817924] [2022-11-03 04:04:26,527 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-03 04:04:26,527 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:04:26,527 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:04:26,527 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:04:26,528 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:04:26,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:26,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:26,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:26,556 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 04:04:26,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 41 [2022-11-03 04:04:26,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:26,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 04:04:26,601 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 04:04:26,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 04:04:26,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:26,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 04:04:26,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 04:04:26,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:26,661 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 04:04:26,662 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 22 [2022-11-03 04:04:26,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:26,708 INFO L356 Elim1Store]: treesize reduction 32, result has 41.8 percent of original size [2022-11-03 04:04:26,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 48 [2022-11-03 04:04:26,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:26,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:26,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:26,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:26,737 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 04:04:26,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 64 [2022-11-03 04:04:26,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:26,765 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:04:26,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 18 [2022-11-03 04:04:26,823 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 04:04:26,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 04:04:26,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-03 04:04:26,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:26,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:26,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:27,358 INFO L356 Elim1Store]: treesize reduction 103, result has 24.8 percent of original size [2022-11-03 04:04:27,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 635 treesize of output 579 [2022-11-03 04:04:27,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:27,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:27,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:27,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:27,500 INFO L356 Elim1Store]: treesize reduction 80, result has 12.1 percent of original size [2022-11-03 04:04:27,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 494 treesize of output 429 [2022-11-03 04:04:27,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:27,720 INFO L356 Elim1Store]: treesize reduction 82, result has 16.3 percent of original size [2022-11-03 04:04:27,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 256 treesize of output 261 [2022-11-03 04:04:27,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:27,959 INFO L356 Elim1Store]: treesize reduction 122, result has 11.6 percent of original size [2022-11-03 04:04:27,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 261 treesize of output 265 [2022-11-03 04:04:28,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:28,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:28,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:28,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:28,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:28,076 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-03 04:04:28,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 265 treesize of output 248 [2022-11-03 04:04:28,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:28,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:28,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:28,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:28,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:28,138 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:28,165 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-03 04:04:28,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 265 treesize of output 248 [2022-11-03 04:04:28,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:28,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:28,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:28,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:28,492 INFO L356 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2022-11-03 04:04:28,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 634 treesize of output 614 [2022-11-03 04:04:28,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:28,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:28,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:28,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:28,583 INFO L356 Elim1Store]: treesize reduction 78, result has 1.3 percent of original size [2022-11-03 04:04:28,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 634 treesize of output 594 [2022-11-03 04:04:28,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:28,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:28,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:28,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:04:28,691 INFO L356 Elim1Store]: treesize reduction 70, result has 11.4 percent of original size [2022-11-03 04:04:28,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 634 treesize of output 603 [2022-11-03 04:04:28,964 INFO L356 Elim1Store]: treesize reduction 123, result has 19.6 percent of original size [2022-11-03 04:04:29,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:29,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 04:04:29,167 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimArr_53 input size 162 context size 162 output size 162 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:251) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 04:04:29,170 INFO L158 Benchmark]: Toolchain (without parser) took 33482.94ms. Allocated memory was 113.2MB in the beginning and 436.2MB in the end (delta: 323.0MB). Free memory was 73.6MB in the beginning and 327.8MB in the end (delta: -254.2MB). Peak memory consumption was 246.2MB. Max. memory is 16.1GB. [2022-11-03 04:04:29,170 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory was 91.2MB in the beginning and 91.1MB in the end (delta: 57.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:04:29,171 INFO L158 Benchmark]: CACSL2BoogieTranslator took 648.79ms. Allocated memory is still 113.2MB. Free memory was 73.4MB in the beginning and 79.5MB in the end (delta: -6.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 04:04:29,171 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.38ms. Allocated memory is still 113.2MB. Free memory was 79.5MB in the beginning and 77.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:04:29,171 INFO L158 Benchmark]: Boogie Preprocessor took 69.02ms. Allocated memory is still 113.2MB. Free memory was 77.2MB in the beginning and 75.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:04:29,171 INFO L158 Benchmark]: RCFGBuilder took 634.86ms. Allocated memory is still 113.2MB. Free memory was 75.1MB in the beginning and 51.7MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-03 04:04:29,171 INFO L158 Benchmark]: TraceAbstraction took 32036.31ms. Allocated memory was 113.2MB in the beginning and 436.2MB in the end (delta: 323.0MB). Free memory was 51.1MB in the beginning and 327.8MB in the end (delta: -276.7MB). Peak memory consumption was 227.5MB. Max. memory is 16.1GB. [2022-11-03 04:04:29,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory was 91.2MB in the beginning and 91.1MB in the end (delta: 57.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 648.79ms. Allocated memory is still 113.2MB. Free memory was 73.4MB in the beginning and 79.5MB in the end (delta: -6.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.38ms. Allocated memory is still 113.2MB. Free memory was 79.5MB in the beginning and 77.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.02ms. Allocated memory is still 113.2MB. Free memory was 77.2MB in the beginning and 75.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 634.86ms. Allocated memory is still 113.2MB. Free memory was 75.1MB in the beginning and 51.7MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 32036.31ms. Allocated memory was 113.2MB in the beginning and 436.2MB in the end (delta: 323.0MB). Free memory was 51.1MB in the beginning and 327.8MB in the end (delta: -276.7MB). Peak memory consumption was 227.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_53 input size 162 context size 162 output size 162 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_53 input size 162 context size 162 output size 162: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 04:04:29,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-queue-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI --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 a9a441ad5f70efa202eb02609b90cbc83f5bf4487618c2a09bffcfe320d65f90 --- 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-5e519f3 [2022-11-03 04:04:31,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:04:31,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:04:31,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:04:31,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:04:31,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:04:31,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:04:31,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:04:31,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:04:31,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:04:31,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:04:31,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:04:31,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:04:31,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:04:31,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:04:31,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:04:31,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:04:31,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:04:31,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:04:31,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:04:31,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:04:31,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:04:31,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:04:31,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:04:31,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:04:31,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:04:31,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:04:31,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:04:31,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:04:31,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:04:31,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:04:31,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:04:31,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:04:31,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:04:31,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:04:31,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:04:31,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:04:31,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:04:31,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:04:31,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:04:31,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:04:31,504 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 04:04:31,558 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:04:31,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:04:31,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:04:31,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:04:31,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:04:31,560 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:04:31,560 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:04:31,560 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:04:31,561 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:04:31,561 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:04:31,561 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:04:31,561 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:04:31,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:04:31,562 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:04:31,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:04:31,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:04:31,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:04:31,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:04:31,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:04:31,563 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 04:04:31,563 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 04:04:31,563 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 04:04:31,564 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:04:31,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:04:31,564 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:04:31,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:04:31,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:04:31,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 04:04:31,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:04:31,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:04:31,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:04:31,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:04:31,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:04:31,569 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 04:04:31,569 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 04:04:31,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:04:31,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:04:31,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 04:04:31,571 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9a441ad5f70efa202eb02609b90cbc83f5bf4487618c2a09bffcfe320d65f90 [2022-11-03 04:04:31,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:04:32,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:04:32,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:04:32,008 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:04:32,008 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:04:32,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/forester-heap/sll-queue-1.i [2022-11-03 04:04:32,104 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/data/5c15a7877/7e122524f7664400bf75199d0289744e/FLAGb8fea6ec9 [2022-11-03 04:04:32,758 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:04:32,759 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i [2022-11-03 04:04:32,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/data/5c15a7877/7e122524f7664400bf75199d0289744e/FLAGb8fea6ec9 [2022-11-03 04:04:33,032 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/data/5c15a7877/7e122524f7664400bf75199d0289744e [2022-11-03 04:04:33,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:04:33,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:04:33,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:04:33,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:04:33,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:04:33,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:04:33" (1/1) ... [2022-11-03 04:04:33,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1487280a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:33, skipping insertion in model container [2022-11-03 04:04:33,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:04:33" (1/1) ... [2022-11-03 04:04:33,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:04:33,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:04:33,392 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22387,22400] [2022-11-03 04:04:33,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22458,22471] [2022-11-03 04:04:33,400 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22532,22545] [2022-11-03 04:04:33,402 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22624,22637] [2022-11-03 04:04:33,406 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22701,22714] [2022-11-03 04:04:33,409 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22796,22809] [2022-11-03 04:04:33,411 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22873,22886] [2022-11-03 04:04:33,412 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22956,22969] [2022-11-03 04:04:33,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23051,23064] [2022-11-03 04:04:33,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23128,23141] [2022-11-03 04:04:33,424 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23211,23224] [2022-11-03 04:04:33,427 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23300,23313] [2022-11-03 04:04:33,428 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23386,23399] [2022-11-03 04:04:33,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23532,23545] [2022-11-03 04:04:33,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:04:33,457 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:04:33,514 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22387,22400] [2022-11-03 04:04:33,530 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22458,22471] [2022-11-03 04:04:33,531 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22532,22545] [2022-11-03 04:04:33,532 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22624,22637] [2022-11-03 04:04:33,533 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22701,22714] [2022-11-03 04:04:33,534 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22796,22809] [2022-11-03 04:04:33,534 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22873,22886] [2022-11-03 04:04:33,535 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[22956,22969] [2022-11-03 04:04:33,541 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23051,23064] [2022-11-03 04:04:33,542 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23128,23141] [2022-11-03 04:04:33,543 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23211,23224] [2022-11-03 04:04:33,544 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23300,23313] [2022-11-03 04:04:33,545 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23386,23399] [2022-11-03 04:04:33,546 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/sv-benchmarks/c/forester-heap/sll-queue-1.i[23532,23545] [2022-11-03 04:04:33,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:04:33,575 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:04:33,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:33 WrapperNode [2022-11-03 04:04:33,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:04:33,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:04:33,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:04:33,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:04:33,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:33" (1/1) ... [2022-11-03 04:04:33,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:33" (1/1) ... [2022-11-03 04:04:33,658 INFO L138 Inliner]: procedures = 122, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 213 [2022-11-03 04:04:33,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:04:33,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:04:33,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:04:33,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:04:33,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:33" (1/1) ... [2022-11-03 04:04:33,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:33" (1/1) ... [2022-11-03 04:04:33,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:33" (1/1) ... [2022-11-03 04:04:33,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:33" (1/1) ... [2022-11-03 04:04:33,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:33" (1/1) ... [2022-11-03 04:04:33,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:33" (1/1) ... [2022-11-03 04:04:33,721 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:33" (1/1) ... [2022-11-03 04:04:33,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:33" (1/1) ... [2022-11-03 04:04:33,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:04:33,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:04:33,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:04:33,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:04:33,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:33" (1/1) ... [2022-11-03 04:04:33,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:04:33,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:04:33,779 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:04:33,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:04:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 04:04:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:04:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:04:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:04:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:04:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:04:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 04:04:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 04:04:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:04:33,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:04:33,941 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:04:33,943 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:04:34,395 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:04:34,402 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:04:34,402 INFO L300 CfgBuilder]: Removed 31 assume(true) statements. [2022-11-03 04:04:34,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:04:34 BoogieIcfgContainer [2022-11-03 04:04:34,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:04:34,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:04:34,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:04:34,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:04:34,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:04:33" (1/3) ... [2022-11-03 04:04:34,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369592b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:04:34, skipping insertion in model container [2022-11-03 04:04:34,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:33" (2/3) ... [2022-11-03 04:04:34,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369592b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:04:34, skipping insertion in model container [2022-11-03 04:04:34,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:04:34" (3/3) ... [2022-11-03 04:04:34,413 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-queue-1.i [2022-11-03 04:04:34,432 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:04:34,432 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-03 04:04:34,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:04:34,491 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;@7148cac7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:04:34,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-03 04:04:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 67 states have (on average 2.029850746268657) internal successors, (136), 81 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:34,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 04:04:34,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:34,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 04:04:34,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:04:34,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:34,510 INFO L85 PathProgramCache]: Analyzing trace with hash 28699591, now seen corresponding path program 1 times [2022-11-03 04:04:34,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:04:34,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860132502] [2022-11-03 04:04:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:34,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:04:34,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:04:34,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:04:34,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 04:04:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:34,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:04:34,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:34,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:04:34,727 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:04:34,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860132502] [2022-11-03 04:04:34,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860132502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:34,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:34,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:04:34,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363850750] [2022-11-03 04:04:34,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:34,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:04:34,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:04:34,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:04:34,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:34,772 INFO L87 Difference]: Start difference. First operand has 82 states, 67 states have (on average 2.029850746268657) internal successors, (136), 81 states have internal predecessors, (136), 0 states have call successors, (0), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:34,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:34,857 INFO L93 Difference]: Finished difference Result 153 states and 263 transitions. [2022-11-03 04:04:34,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:04:34,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-03 04:04:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:34,874 INFO L225 Difference]: With dead ends: 153 [2022-11-03 04:04:34,875 INFO L226 Difference]: Without dead ends: 67 [2022-11-03 04:04:34,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:34,886 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 73 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:34,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 71 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:04:34,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-03 04:04:34,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-03 04:04:34,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.293103448275862) internal successors, (75), 66 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2022-11-03 04:04:34,929 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 5 [2022-11-03 04:04:34,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:34,930 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2022-11-03 04:04:34,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:34,931 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2022-11-03 04:04:34,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 04:04:34,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:34,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:34,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 04:04:35,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:04:35,145 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:04:35,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:35,146 INFO L85 PathProgramCache]: Analyzing trace with hash 296515339, now seen corresponding path program 1 times [2022-11-03 04:04:35,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:04:35,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044035581] [2022-11-03 04:04:35,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:35,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:04:35,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:04:35,154 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:04:35,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 04:04:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:35,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:04:35,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:35,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:04:35,334 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:04:35,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044035581] [2022-11-03 04:04:35,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044035581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:35,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:35,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:04:35,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367267700] [2022-11-03 04:04:35,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:35,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:04:35,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:04:35,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:04:35,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:35,352 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:35,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:35,424 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2022-11-03 04:04:35,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:04:35,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-11-03 04:04:35,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:35,426 INFO L225 Difference]: With dead ends: 67 [2022-11-03 04:04:35,426 INFO L226 Difference]: Without dead ends: 65 [2022-11-03 04:04:35,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:35,428 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 57 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:35,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 75 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:04:35,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-03 04:04:35,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-11-03 04:04:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.280701754385965) internal successors, (73), 64 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2022-11-03 04:04:35,441 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 8 [2022-11-03 04:04:35,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:35,442 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2022-11-03 04:04:35,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2022-11-03 04:04:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 04:04:35,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:35,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:35,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:35,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:04:35,657 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:04:35,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:35,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1137960540, now seen corresponding path program 1 times [2022-11-03 04:04:35,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:04:35,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531729909] [2022-11-03 04:04:35,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:35,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:04:35,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:04:35,660 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:04:35,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 04:04:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:35,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:04:35,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:35,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:04:35,780 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:04:35,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531729909] [2022-11-03 04:04:35,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531729909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:35,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:35,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:04:35,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773346724] [2022-11-03 04:04:35,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:35,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:04:35,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:04:35,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:04:35,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:35,783 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:35,862 INFO L93 Difference]: Finished difference Result 144 states and 166 transitions. [2022-11-03 04:04:35,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:04:35,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 04:04:35,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:35,865 INFO L225 Difference]: With dead ends: 144 [2022-11-03 04:04:35,865 INFO L226 Difference]: Without dead ends: 81 [2022-11-03 04:04:35,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:35,867 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 14 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:35,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 127 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:04:35,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-03 04:04:35,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2022-11-03 04:04:35,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 1.265625) internal successors, (81), 71 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:35,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2022-11-03 04:04:35,889 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 11 [2022-11-03 04:04:35,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:35,890 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2022-11-03 04:04:35,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:35,890 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2022-11-03 04:04:35,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 04:04:35,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:35,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:35,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:36,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:04:36,105 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:04:36,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1315213501, now seen corresponding path program 1 times [2022-11-03 04:04:36,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:04:36,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182730604] [2022-11-03 04:04:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:36,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:04:36,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:04:36,108 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:04:36,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 04:04:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:36,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:04:36,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:36,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:36,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:04:36,234 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:04:36,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182730604] [2022-11-03 04:04:36,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182730604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:36,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:36,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:04:36,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005088589] [2022-11-03 04:04:36,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:36,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:04:36,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:04:36,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:04:36,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:04:36,237 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:36,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:36,335 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2022-11-03 04:04:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:04:36,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-11-03 04:04:36,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:36,337 INFO L225 Difference]: With dead ends: 88 [2022-11-03 04:04:36,337 INFO L226 Difference]: Without dead ends: 68 [2022-11-03 04:04:36,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:04:36,339 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 5 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:36,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 187 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:04:36,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-03 04:04:36,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-11-03 04:04:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 67 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:36,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2022-11-03 04:04:36,349 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 14 [2022-11-03 04:04:36,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:36,350 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2022-11-03 04:04:36,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:36,350 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2022-11-03 04:04:36,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 04:04:36,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:36,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:36,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:36,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:04:36,564 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:04:36,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:36,565 INFO L85 PathProgramCache]: Analyzing trace with hash 129337073, now seen corresponding path program 1 times [2022-11-03 04:04:36,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:04:36,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544910256] [2022-11-03 04:04:36,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:36,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:04:36,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:04:36,574 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:04:36,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 04:04:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:36,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 04:04:36,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:36,789 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-03 04:04:36,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 14 [2022-11-03 04:04:36,877 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 04:04:36,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 04:04:36,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:36,922 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 04:04:36,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-03 04:04:36,976 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:04:36,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-11-03 04:04:37,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-03 04:04:37,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:37,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:37,178 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_115 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_115) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2022-11-03 04:04:37,245 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:37,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2022-11-03 04:04:37,264 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:37,264 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 41 [2022-11-03 04:04:37,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-03 04:04:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:37,411 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:04:37,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544910256] [2022-11-03 04:04:37,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544910256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:04:37,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1312684630] [2022-11-03 04:04:37,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:37,428 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:04:37,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:04:37,433 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:04:37,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-03 04:04:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:37,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 04:04:37,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:37,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-03 04:04:37,711 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 04:04:37,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-03 04:04:37,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 04:04:37,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-11-03 04:04:37,781 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:04:37,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-11-03 04:04:37,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-03 04:04:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:37,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:37,985 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_156 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_156) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2022-11-03 04:04:38,004 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:38,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2022-11-03 04:04:38,020 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:38,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 41 [2022-11-03 04:04:38,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-03 04:04:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:38,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1312684630] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:04:38,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533422696] [2022-11-03 04:04:38,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:38,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:04:38,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:04:38,119 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:04:38,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 04:04:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:38,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 04:04:38,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:38,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-03 04:04:38,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 14 [2022-11-03 04:04:38,267 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 04:04:38,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 04:04:38,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:38,295 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 04:04:38,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-03 04:04:38,321 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:04:38,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-11-03 04:04:38,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-03 04:04:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:38,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:38,457 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_199 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_199) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2022-11-03 04:04:38,477 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:38,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2022-11-03 04:04:38,494 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:38,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 41 [2022-11-03 04:04:38,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-03 04:04:38,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:38,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533422696] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:04:38,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:04:38,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2022-11-03 04:04:38,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306459647] [2022-11-03 04:04:38,586 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:04:38,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 04:04:38,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:04:38,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 04:04:38,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=82, Unknown=3, NotChecked=60, Total=182 [2022-11-03 04:04:38,588 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:38,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:38,977 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2022-11-03 04:04:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:04:38,978 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 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 17 [2022-11-03 04:04:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:38,979 INFO L225 Difference]: With dead ends: 138 [2022-11-03 04:04:38,979 INFO L226 Difference]: Without dead ends: 136 [2022-11-03 04:04:38,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 82 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=96, Unknown=3, NotChecked=66, Total=210 [2022-11-03 04:04:38,981 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 176 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 225 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:38,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 289 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 225 Unchecked, 0.3s Time] [2022-11-03 04:04:38,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-03 04:04:38,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 80. [2022-11-03 04:04:38,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 72 states have (on average 1.25) internal successors, (90), 79 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:38,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2022-11-03 04:04:38,999 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 17 [2022-11-03 04:04:38,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:38,999 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2022-11-03 04:04:38,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:39,000 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2022-11-03 04:04:39,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 04:04:39,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:39,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:39,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:39,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:39,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-03 04:04:39,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:04:39,615 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:04:39,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:39,616 INFO L85 PathProgramCache]: Analyzing trace with hash 32191693, now seen corresponding path program 1 times [2022-11-03 04:04:39,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:04:39,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19240573] [2022-11-03 04:04:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:39,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:04:39,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:04:39,618 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:04:39,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 04:04:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:39,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:04:39,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:39,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:39,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:04:39,744 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:04:39,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19240573] [2022-11-03 04:04:39,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19240573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:39,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:39,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:04:39,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554023801] [2022-11-03 04:04:39,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:39,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:04:39,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:04:39,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:04:39,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:39,747 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:39,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:39,818 INFO L93 Difference]: Finished difference Result 166 states and 191 transitions. [2022-11-03 04:04:39,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:04:39,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 04:04:39,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:39,820 INFO L225 Difference]: With dead ends: 166 [2022-11-03 04:04:39,820 INFO L226 Difference]: Without dead ends: 102 [2022-11-03 04:04:39,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:39,822 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 22 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:39,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 120 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:04:39,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-03 04:04:39,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2022-11-03 04:04:39,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 84 states have (on average 1.2142857142857142) internal successors, (102), 91 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:39,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2022-11-03 04:04:39,838 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 18 [2022-11-03 04:04:39,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:39,838 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2022-11-03 04:04:39,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:39,839 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2022-11-03 04:04:39,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 04:04:39,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:39,840 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:39,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-03 04:04:40,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:04:40,053 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:04:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:40,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1241125015, now seen corresponding path program 1 times [2022-11-03 04:04:40,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:04:40,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987489690] [2022-11-03 04:04:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:40,055 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:04:40,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:04:40,056 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:04:40,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 04:04:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:40,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:04:40,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 04:04:40,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:04:40,215 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:04:40,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987489690] [2022-11-03 04:04:40,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987489690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:04:40,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:04:40,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:04:40,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838142313] [2022-11-03 04:04:40,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:40,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:04:40,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:04:40,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:04:40,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:40,218 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:40,291 INFO L93 Difference]: Finished difference Result 191 states and 218 transitions. [2022-11-03 04:04:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:04:40,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-03 04:04:40,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:40,293 INFO L225 Difference]: With dead ends: 191 [2022-11-03 04:04:40,293 INFO L226 Difference]: Without dead ends: 115 [2022-11-03 04:04:40,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:04:40,294 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 28 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:40,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 133 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:04:40,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-03 04:04:40,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 104. [2022-11-03 04:04:40,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 96 states have (on average 1.1979166666666667) internal successors, (115), 103 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:40,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2022-11-03 04:04:40,310 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 24 [2022-11-03 04:04:40,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:40,311 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2022-11-03 04:04:40,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2022-11-03 04:04:40,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 04:04:40,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:40,312 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] [2022-11-03 04:04:40,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:40,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:04:40,527 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:04:40,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:40,527 INFO L85 PathProgramCache]: Analyzing trace with hash 43662915, now seen corresponding path program 1 times [2022-11-03 04:04:40,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:04:40,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907899037] [2022-11-03 04:04:40,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:40,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:04:40,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:04:40,529 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:04:40,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 04:04:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:40,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 04:04:40,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:40,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-03 04:04:40,725 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 04:04:40,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-03 04:04:40,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 14 [2022-11-03 04:04:40,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 04:04:40,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 14 [2022-11-03 04:04:40,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 04:04:40,816 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:04:40,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 45 [2022-11-03 04:04:40,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-03 04:04:40,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 20 [2022-11-03 04:04:41,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 04:04:41,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-03 04:04:41,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-03 04:04:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:41,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:41,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 49 [2022-11-03 04:04:41,273 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_343 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_343) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|)) (forall ((v_ArrVal_344 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~item~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_344) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2022-11-03 04:04:41,294 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:41,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2022-11-03 04:04:41,306 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:41,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 42 [2022-11-03 04:04:41,323 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:41,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 47 [2022-11-03 04:04:41,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2022-11-03 04:04:41,372 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:41,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 51 [2022-11-03 04:04:41,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-03 04:04:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:41,495 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:04:41,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907899037] [2022-11-03 04:04:41,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907899037] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:04:41,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [159918825] [2022-11-03 04:04:41,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:41,496 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:04:41,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:04:41,497 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:04:41,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-03 04:04:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:41,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 04:04:41,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:41,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-03 04:04:41,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 04:04:41,764 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 04:04:41,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 04:04:41,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:41,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 04:04:41,808 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 04:04:41,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 04:04:41,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:41,836 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 04:04:41,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-03 04:04:41,872 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:04:41,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 45 [2022-11-03 04:04:41,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-03 04:04:41,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 20 [2022-11-03 04:04:42,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 04:04:42,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-03 04:04:42,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-03 04:04:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:42,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:42,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 49 [2022-11-03 04:04:42,259 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_391 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~item~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_391) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (forall ((v_ArrVal_392 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_392) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|))) is different from false [2022-11-03 04:04:42,279 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:42,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2022-11-03 04:04:42,290 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:42,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 42 [2022-11-03 04:04:42,306 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:42,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 47 [2022-11-03 04:04:42,328 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:42,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 53 [2022-11-03 04:04:42,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2022-11-03 04:04:42,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-03 04:04:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:42,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [159918825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:04:42,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375486124] [2022-11-03 04:04:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:42,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:04:42,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:04:42,452 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:04:42,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 04:04:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:42,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 04:04:42,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:42,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-03 04:04:42,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 04:04:42,648 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 04:04:42,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 04:04:42,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:42,672 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 04:04:42,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-03 04:04:42,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 14 [2022-11-03 04:04:42,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 04:04:42,759 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-03 04:04:42,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 45 [2022-11-03 04:04:42,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-03 04:04:42,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 20 [2022-11-03 04:04:42,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 04:04:42,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-03 04:04:43,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-11-03 04:04:43,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:43,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:43,099 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 49 [2022-11-03 04:04:43,111 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_444 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~item~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_444) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (forall ((v_ArrVal_442 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_442) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|))) is different from false [2022-11-03 04:04:43,133 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:43,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2022-11-03 04:04:43,143 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:43,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 42 [2022-11-03 04:04:43,159 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:43,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 47 [2022-11-03 04:04:43,182 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:43,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 53 [2022-11-03 04:04:43,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2022-11-03 04:04:43,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-03 04:04:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:43,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375486124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:04:43,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:04:43,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 16 [2022-11-03 04:04:43,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749304255] [2022-11-03 04:04:43,301 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:04:43,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 04:04:43,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:04:43,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 04:04:43,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=128, Unknown=3, NotChecked=72, Total=240 [2022-11-03 04:04:43,303 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:44,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:44,153 INFO L93 Difference]: Finished difference Result 180 states and 197 transitions. [2022-11-03 04:04:44,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 04:04:44,155 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 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 25 [2022-11-03 04:04:44,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:44,156 INFO L225 Difference]: With dead ends: 180 [2022-11-03 04:04:44,156 INFO L226 Difference]: Without dead ends: 178 [2022-11-03 04:04:44,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=185, Unknown=3, NotChecked=90, Total=342 [2022-11-03 04:04:44,157 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 140 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 330 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:44,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 515 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 151 Invalid, 0 Unknown, 330 Unchecked, 0.7s Time] [2022-11-03 04:04:44,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-03 04:04:44,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 111. [2022-11-03 04:04:44,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 110 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:44,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2022-11-03 04:04:44,173 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 25 [2022-11-03 04:04:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:44,174 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2022-11-03 04:04:44,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:04:44,174 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2022-11-03 04:04:44,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 04:04:44,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:44,175 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:44,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:44,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:44,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:44,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:04:44,798 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:04:44,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:44,798 INFO L85 PathProgramCache]: Analyzing trace with hash 137879527, now seen corresponding path program 1 times [2022-11-03 04:04:44,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:04:44,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138980658] [2022-11-03 04:04:44,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:44,799 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:04:44,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:04:44,799 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:04:44,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 04:04:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:44,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 04:04:45,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:45,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-03 04:04:45,062 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:04:45,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-03 04:04:45,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 04:04:45,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-11-03 04:04:45,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-11-03 04:04:45,192 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 04:04:45,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-03 04:04:45,215 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 04:04:45,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 32 [2022-11-03 04:04:45,245 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-03 04:04:45,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 42 [2022-11-03 04:04:45,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:45,367 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-03 04:04:45,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 48 [2022-11-03 04:04:45,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-03 04:04:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:45,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:45,548 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_518 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_518) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2022-11-03 04:04:45,573 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~item~0#1.offset| (_ BitVec 32)) (v_ArrVal_514 (_ BitVec 32)) (v_ArrVal_518 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (select |c_#valid| v_ArrVal_514) (_ bv0 1))) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |ULTIMATE.start_main_~item~0#1.offset| v_ArrVal_514)) v_ArrVal_514 v_ArrVal_518) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32))))) is different from false [2022-11-03 04:04:45,632 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:45,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 04:04:45,648 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~item~0#1.offset| (_ BitVec 32)) (v_ArrVal_518 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_21 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select v_arrayElimArr_21 |ULTIMATE.start_main_~item~0#1.offset|))) (or (not (= (_ bv0 1) (select |c_#valid| .cse0))) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_arrayElimArr_21) .cse0 v_ArrVal_518) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))))) is different from false [2022-11-03 04:04:45,669 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:45,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-03 04:04:45,686 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:45,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 199 treesize of output 158 [2022-11-03 04:04:45,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 118 [2022-11-03 04:04:45,714 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:45,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 120 [2022-11-03 04:04:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-03 04:04:48,815 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:04:48,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138980658] [2022-11-03 04:04:48,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138980658] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:04:48,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [882716393] [2022-11-03 04:04:48,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:48,815 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:04:48,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:04:48,817 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:04:48,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-03 04:04:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:49,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 04:04:49,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:49,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-03 04:04:49,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 14 [2022-11-03 04:04:49,139 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 04:04:49,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 04:04:49,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:04:49,178 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:04:49,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-03 04:04:49,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-11-03 04:04:49,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:49,363 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-03 04:04:49,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 42 [2022-11-03 04:04:49,391 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-03 04:04:49,391 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-03 04:04:49,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 29 [2022-11-03 04:04:49,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-03 04:04:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:04:49,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:49,635 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_588 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_588) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2022-11-03 04:04:49,653 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_587 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_588 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_585 (_ BitVec 32))) (or (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_587) v_ArrVal_585 v_ArrVal_588) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32))) (not (= (select |c_#valid| v_ArrVal_585) (_ bv0 1))))) is different from false [2022-11-03 04:04:49,719 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:49,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-03 04:04:49,738 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:04:49,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 144 [2022-11-03 04:04:49,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 106 [2022-11-03 04:04:49,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 102 [2022-11-03 04:05:17,312 WARN L234 SmtUtils]: Spent 23.09s on a formula simplification. DAG size of input: 40 DAG size of output: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:05:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-03 04:05:17,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [882716393] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:05:17,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547038065] [2022-11-03 04:05:17,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:17,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:17,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:05:17,334 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:05:17,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 04:05:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:17,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:05:17,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:17,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-03 04:05:17,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 14 [2022-11-03 04:05:17,546 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 04:05:17,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 04:05:17,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:05:17,593 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:05:17,594 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-03 04:05:17,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-11-03 04:05:17,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:05:17,810 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-03 04:05:17,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 42 [2022-11-03 04:05:17,841 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-03 04:05:17,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-03 04:05:17,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 29 [2022-11-03 04:05:18,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-03 04:05:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:18,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:18,077 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_657 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_657) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2022-11-03 04:05:18,098 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.base_50| (_ BitVec 32)) (v_ArrVal_656 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_657 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_656) |v_ULTIMATE.start_main_~item~0#1.base_50| v_ArrVal_657) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_50|))))) is different from false [2022-11-03 04:05:18,188 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:05:18,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-03 04:05:18,210 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:05:18,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 144 [2022-11-03 04:05:18,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2022-11-03 04:05:18,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 102 [2022-11-03 04:05:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-03 04:05:26,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547038065] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:05:26,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:05:26,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7, 7, 7, 7] total 23 [2022-11-03 04:05:26,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6158381] [2022-11-03 04:05:26,567 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:05:26,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 04:05:26,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:26,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 04:05:26,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=185, Unknown=10, NotChecked=238, Total=506 [2022-11-03 04:05:26,569 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand has 23 states, 23 states have (on average 4.217391304347826) internal successors, (97), 23 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:05:27,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:27,399 INFO L93 Difference]: Finished difference Result 148 states and 162 transitions. [2022-11-03 04:05:27,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:05:27,400 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.217391304347826) internal successors, (97), 23 states have internal predecessors, (97), 0 states have call successors, (0), 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 25 [2022-11-03 04:05:27,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:27,401 INFO L225 Difference]: With dead ends: 148 [2022-11-03 04:05:27,401 INFO L226 Difference]: Without dead ends: 146 [2022-11-03 04:05:27,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 39.1s TimeCoverageRelationStatistics Valid=87, Invalid=237, Unknown=10, NotChecked=266, Total=600 [2022-11-03 04:05:27,402 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 76 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 484 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:27,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 663 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 162 Invalid, 0 Unknown, 484 Unchecked, 0.6s Time] [2022-11-03 04:05:27,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-03 04:05:27,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 126. [2022-11-03 04:05:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 125 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:05:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 139 transitions. [2022-11-03 04:05:27,421 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 139 transitions. Word has length 25 [2022-11-03 04:05:27,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:27,421 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 139 transitions. [2022-11-03 04:05:27,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.217391304347826) internal successors, (97), 23 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:05:27,421 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 139 transitions. [2022-11-03 04:05:27,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 04:05:27,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:27,423 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:27,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:27,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2022-11-03 04:05:27,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:28,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:28,038 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-11-03 04:05:28,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:28,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1584320444, now seen corresponding path program 1 times [2022-11-03 04:05:28,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:28,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229279002] [2022-11-03 04:05:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:28,039 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:28,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:28,040 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:28,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 04:05:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:28,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 04:05:28,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:28,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-03 04:05:28,303 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 04:05:28,332 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 04:05:28,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 04:05:28,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:05:28,370 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:05:28,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-03 04:05:28,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 14 [2022-11-03 04:05:28,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 04:05:28,438 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 04:05:28,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 04:05:28,607 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 04:05:28,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 49 [2022-11-03 04:05:28,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:05:28,637 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 04:05:28,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 59 [2022-11-03 04:05:28,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2022-11-03 04:05:28,701 INFO L356 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2022-11-03 04:05:28,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 42 [2022-11-03 04:05:28,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:05:28,774 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-03 04:05:28,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-03 04:05:28,904 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-03 04:05:28,904 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 69 [2022-11-03 04:05:28,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-03 04:05:29,353 INFO L356 Elim1Store]: treesize reduction 29, result has 9.4 percent of original size [2022-11-03 04:05:29,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 33 [2022-11-03 04:05:29,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 04:05:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:29,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:29,463 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_742 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_743 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_743))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_742) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2022-11-03 04:05:29,514 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_736 (_ BitVec 32)) (v_ArrVal_742 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_743 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset| v_ArrVal_736)) v_ArrVal_736 v_ArrVal_743))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32))) v_ArrVal_736 v_ArrVal_742) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32))) (not (= (select |c_#valid| v_ArrVal_736) (_ bv0 1))) (= v_ArrVal_736 (_ bv0 32)))) is different from false [2022-11-03 04:05:29,666 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:05:29,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 44 [2022-11-03 04:05:29,677 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:05:29,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 47 [2022-11-03 04:05:29,719 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_31 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_742 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_32 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_743 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select v_arrayElimArr_31 |c_ULTIMATE.start_main_~item~0#1.offset|))) (or (= .cse0 (_ bv0 32)) (not (= (select v_arrayElimArr_32 |c_ULTIMATE.start_main_~item~0#1.offset|) (_ bv0 32))) (not (= (_ bv0 1) (select |c_#valid| .cse0))) (not (= (select (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_arrayElimArr_31) .cse0 v_ArrVal_743))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_arrayElimArr_32) .cse0 v_ArrVal_742) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)))))) is different from false [2022-11-03 04:05:29,753 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:05:29,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 65 [2022-11-03 04:05:29,768 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:05:29,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 49 [2022-11-03 04:05:30,015 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:05:30,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 3444 treesize of output 2309 [2022-11-03 04:05:30,136 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:05:30,136 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3767 treesize of output 3678 [2022-11-03 04:05:30,406 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:05:30,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3177 treesize of output 3005 [2022-11-03 04:05:30,917 INFO L356 Elim1Store]: treesize reduction 8, result has 91.8 percent of original size [2022-11-03 04:05:30,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 3471 treesize of output 3003 [2022-11-03 04:05:31,046 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:05:31,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 765 treesize of output 733 [2022-11-03 04:05:31,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 731 treesize of output 669 [2022-11-03 04:08:38,500 WARN L234 SmtUtils]: Spent 12.19s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:08:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-03 04:08:38,508 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:38,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229279002] [2022-11-03 04:08:38,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229279002] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:08:38,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [604810817] [2022-11-03 04:08:38,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:38,509 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:08:38,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:08:38,514 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:08:38,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a6df176-1f98-4fe3-946f-b24182a7a7e2/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-03 04:08:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:38,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 04:08:38,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:38,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-03 04:08:38,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 04:08:38,886 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 04:08:38,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 04:08:38,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:08:38,904 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-03 04:08:38,938 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 04:08:38,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 04:08:38,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:08:39,000 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 04:08:39,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-03 04:08:39,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 04:08:39,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 04:08:39,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:08:39,395 INFO L356 Elim1Store]: treesize reduction 50, result has 18.0 percent of original size [2022-11-03 04:08:39,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 115 treesize of output 92 [2022-11-03 04:08:39,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:08:39,457 INFO L356 Elim1Store]: treesize reduction 56, result has 8.2 percent of original size [2022-11-03 04:08:39,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 95 treesize of output 107 [2022-11-03 04:08:39,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:08:39,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:08:39,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:08:39,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-03 04:08:39,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-03 04:08:39,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:08:39,528 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 04:08:39,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 18 [2022-11-03 04:08:39,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-03 04:08:39,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-03 04:08:39,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-03 04:08:39,626 INFO L356 Elim1Store]: treesize reduction 33, result has 13.2 percent of original size [2022-11-03 04:08:39,626 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 38 [2022-11-03 04:08:39,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 04:08:39,799 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 04:08:39,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 64 [2022-11-03 04:08:39,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2022-11-03 04:08:40,477 INFO L356 Elim1Store]: treesize reduction 28, result has 36.4 percent of original size [2022-11-03 04:08:40,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 43 [2022-11-03 04:08:40,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 04:08:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:40,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:08:43,193 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|))) (and (forall ((v_ArrVal_821 (_ BitVec 32))) (or (forall ((v_ArrVal_825 (_ BitVec 32)) (v_ArrVal_824 (_ BitVec 32)) (v_ArrVal_819 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_815 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_822 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_819) v_ArrVal_821 (store (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_815) v_ArrVal_821) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_ArrVal_824)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (or (= .cse0 (_ bv0 32)) (not (= (select (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~item~0#1.offset| v_ArrVal_821)) v_ArrVal_821 (store (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_822) v_ArrVal_821) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_ArrVal_825)))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) .cse0) (_ bv0 32)))))) (not (= (_ bv0 1) (select |c_#valid| v_ArrVal_821))) (= v_ArrVal_821 (_ bv0 32)))) (forall ((v_ArrVal_821 (_ BitVec 32))) (or (forall ((v_ArrVal_825 (_ BitVec 32)) (v_ArrVal_824 (_ BitVec 32)) (v_ArrVal_819 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_815 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_822 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~item~0#1.offset| v_ArrVal_821)) v_ArrVal_821 (store (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_822) v_ArrVal_821) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_ArrVal_825)))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (or (= .cse3 (_ bv0 32)) (not (= (select (select .cse4 .cse3) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_819) v_ArrVal_821 (store (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_815) v_ArrVal_821) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_ArrVal_824)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32))))))) (not (= (_ bv0 1) (select |c_#valid| v_ArrVal_821))) (= v_ArrVal_821 (_ bv0 32)))))) is different from false [2022-11-03 04:08:43,735 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:08:43,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2022-11-03 04:08:43,862 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:08:43,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 98 [2022-11-03 04:08:45,940 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_arrayElimArr_41 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_825 (_ BitVec 32)) (v_ArrVal_824 (_ BitVec 32)) (v_ArrVal_819 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_815 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_822 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select v_arrayElimArr_41 |c_ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse2 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_arrayElimArr_41) .cse1 (store (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_822) .cse1) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_ArrVal_825)))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (or (= .cse0 (_ bv0 32)) (= .cse1 (_ bv0 32)) (not (= (select |c_#valid| .cse1) (_ bv0 1))) (not (= (select (select .cse2 .cse0) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_819) .cse1 (store (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_815) .cse1) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_ArrVal_824)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)))))))) (forall ((v_arrayElimArr_40 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_825 (_ BitVec 32)) (v_ArrVal_824 (_ BitVec 32)) (v_ArrVal_819 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_815 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_822 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select v_arrayElimArr_40 |c_ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse5 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_819) .cse3 (store (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_815) .cse3) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_ArrVal_824)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (or (= .cse3 (_ bv0 32)) (not (= (_ bv0 1) (select |c_#valid| .cse3))) (not (= (select (let ((.cse4 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_arrayElimArr_40) .cse3 (store (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_822) .cse3) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_ArrVal_825)))) (select .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) .cse5) (_ bv0 32))) (= .cse5 (_ bv0 32))))))) is different from false [2022-11-03 04:08:45,997 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:08:45,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 377 treesize of output 338 [2022-11-03 04:08:46,160 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:08:46,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 329 treesize of output 258 [2022-11-03 04:08:48,735 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:08:48,736 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 14 new quantified variables, introduced 55 case distinctions, treesize of input 5722 treesize of output 5450 [2022-11-03 04:08:49,268 INFO L244 Elim1Store]: Index analysis took 154 ms [2022-11-03 04:08:49,865 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:08:49,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 9334 treesize of output 9052 [2022-11-03 04:08:52,565 INFO L356 Elim1Store]: treesize reduction 8, result has 96.4 percent of original size [2022-11-03 04:08:52,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 9286 treesize of output 9026 [2022-11-03 04:08:52,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11443 treesize of output 11343 [2022-11-03 04:08:53,798 INFO L244 Elim1Store]: Index analysis took 190 ms [2022-11-03 04:08:55,111 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:08:55,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 15386 treesize of output 15310 [2022-11-03 04:08:56,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13501 treesize of output 13439 [2022-11-03 04:08:59,729 INFO L356 Elim1Store]: treesize reduction 8, result has 96.4 percent of original size [2022-11-03 04:08:59,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 13732 treesize of output 13030 [2022-11-03 04:09:00,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14515 treesize of output 14421 [2022-11-03 04:09:01,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13777 treesize of output 13719 [2022-11-03 04:09:03,069 INFO L244 Elim1Store]: Index analysis took 258 ms [2022-11-03 04:09:04,357 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:09:04,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 19180 treesize of output 18996